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Bank of Japan increases interest rates by 25 bps after the October 2026 meeting?

polymarketEconomics·2026-09-25·view on polymarket ↗
17%
Agent
18%
Market Price
-0.8%
Edge
65%
Confidence
50,069
Volume
2.0c
Spread
34
Days to resolution
5
Markets in event
final rationale
Mean of 5 draws (0.16, 0.15, 0.17, 0.18, 0.20). (0) Not resolved yet. The BOJ schedule page shows the October 29–30 meeting still ahead, with the statement due October 30. The policy rate is 1.25% after the September 18 hike of 25bp. (a) About five weeks remain. Before the meeting come the September Summary of Opinions (Oct 1), the Tankan, CPI prints and the October Outlook Report. (b) The status quo is no change. The Bloomberg survey of Sept 4–10 found no economist expecting a back-to-back October hike, with a third picking December and the rest January. At his press conference Ueda said consecutive hikes would need a sharp inflation overshoot, and he framed October as the meeting to quantify the impact of past hikes. Board member Masu sounded gradualist, and the two appointees of Prime Minister Takaichi dissented even in September. (c) NO scenario: data comes in steady, the yen stabilizes, and the BOJ holds at 1.25% while signalling December or January. (d) YES scenario: the yen slides past 158–160 (a BOJ rate check has already been reported) and a hot CPI or Tankan print arrives. Hawks like Takata then invoke 'nimble' hikes under U.S. pressure and pull the December move forward. On market pricing, the OIS tracker's 25–34% looks unreliable: its implied 1.11% post-meeting rate sits below the current rate, so it appears to be on a stale base. The other tracker's 84% for a 50bp hike is clearly stale. I anchor on Polymarket's 18% and shade slightly lower given the unanimous survey consensus against October, while keeping a meaningful tail for an FX-driven shock.
price vs. prediction
market price agent forecast at t+0
23 follow-ups
1. Planner Opus 5.5 · picks the research tools
Tools chosen: polymarket_direct resolution_source kalshi_related polymarket_related fred article_search
Planner reasoning
The Polymarket price is the anchor, and the BoJ schedule page is the resolution source. Cross-venue BoJ markets give an independent read. FRED supplies Japan CPI and policy-rate series. One targeted news search covers the specific signals for an October hike: BoJ official comments and the OIS-implied probability.
2. Research parallel tool calls + 4 web research loops (Sonnet 5) · read raw by the forecasters
at a glance
RESEARCH DIGEST (built in code: tool summaries and each report's bottom line; the forecasters read the full tool outputs and reports) Tools - polymarket_direct: ## This Market's Polymarket Data **Bank of Japan increases interest rates by 25 bps after the October 2026 meeting?** - Current price (probability): 18.00% - 7-day price change: +2.50% - 30-day price change: +5.50% - Total volume: $50,069 (USD notional) - Price range: 9.50% - 66.50% - Data points: 57 days - resolution_source: already_resolved=no; matches_criteria=True; last_updated=unknown. The page lists the schedule of BOJ Monetary Policy Meetings for 2026, showing the October meeting dates as Oct. 29 (Thurs.) and 30 (Fri.), with the Statement release scheduled for Oct. 30 (Fri.). No statement content, decision, or interest rate change data for the October 2026 meeting is shown yet, as the release has not occurred. - kalshi_related: 2 related markets / summaries. keyword 'Bank of Japan': ok | keyword 'BOJ rate': ok - polymarket_related: Polymarket search over 2 keyword(s), kept 7 matches. keyword 'Bank of Japan': 5 markets | keyword 'BOJ': 2 markets - fred: Fetched 5 FRED series (lookback=365d) (via search 'Japan consumer price index inflation'). - article_search: Fetched 13 unique articles across 2 queries (lookback=30d). 'BOJ October 2026 rate hike OIS implied probability': 8 articles | 'Ueda September 2026 policy meeting hike signal': 8 articles Research loops, bottom lines - current state: The BOJ hiked 25bp in September 2026 (to 1.25%), and the dominant survey/analyst consensus as of mid-to-late September is for a pause at the October 29-30 meeting, with the next hike more likely in December or January 2026/27; Governor Ueda's post-meeting remarks emphasized data-dependence and downplayed the likelihood of rapid consecutive hikes absent an inflation overshoot. - base rate: The reference class of BOJ tightening cycles shows the bank has historically avoided hiking at two consecutive meetings, doing so only once (June→September 2026) in an unusually compressed cycle described as the shortest gap since 1990; the immediately following Bloomberg economist survey found no respondents expecting a further back-to-back hike in October, and OIS-market pricing as of late September assigns only roughly a 25-34% probability to an October hike, both pointing toward "No change" - yes case: The most credible YES path is not a base-rate repeat of September but a shock-driven one: continued yen depreciation past ~158-160 (already flagged by an active BOJ rate check on Sept 24) combined with a hot pre-meeting inflation/Tankan print would let hawks like Takata invoke the newly-declared "nimble, non-fixed-pace" 2026 doctrine and Bessent-style external pressure to justify a second consecutive hike, even though this is currently a tail scenario relative to the priced-in December/January p - no case: The dominant economist consensus (Bloomberg, Sept 11), OIS market pricing (rateprobability.com, Sept 24, ~34% hike odds), Takaichi-appointee dissent and political optics, and the BOJ's own historical avoidance of back-to-back hikes (except the just-completed, externally-pressured September move) all point toward a "No change" outcome at the October 29–30 meeting, with only a minority of forecasters (e.g., Nomura) and one methodologically inconsistent tracker suggesting otherwise.
tools
toolstatustimeitemssummary
polymarket_direct OK 0.3s 1 ## This Market's Polymarket Data **Bank of Japan increases interest rates by 25 bps after the October 2026 meeting?** - Current price (probability): 18.00% - 7-day price change: +2.50% - 30-day price change: +5.50% - Total volume: $50,069 (USD notional) - Price range: 9.50% - 66.50% - Data points:
resolution_source OK 4.1s 1 already_resolved=no; matches_criteria=True; last_updated=unknown. The page lists the schedule of BOJ Monetary Policy Meetings for 2026, showing the October meeting dates as Oct. 29 (Thurs.) and 30 (Fri.), with the Statement release scheduled for Oct. 30 (Fri.). No statement content, decision, or int
kalshi_related OK 1.6s 2 2 related markets / summaries. keyword 'Bank of Japan': ok | keyword 'BOJ rate': ok
polymarket_related OK 0.5s 7 Polymarket search over 2 keyword(s), kept 7 matches. keyword 'Bank of Japan': 5 markets | keyword 'BOJ': 2 markets
fred OK 1.5s 5 Fetched 5 FRED series (lookback=365d) (via search 'Japan consumer price index inflation').
article_search OK 0.4s 13 Fetched 13 unique articles across 2 queries (lookback=30d). 'BOJ October 2026 rate hike OIS implied probability': 8 articles | 'Ueda September 2026 policy meeting hike signal': 8 articles
research loops · 4/4 ok · 15 searches · 8 page reads
dimensionstatustimesearchespage readsreport
current state OK 37s 4 2 4825 chars
base rate OK 48s 3 2 4850 chars
yes case OK 37s 4 2 5148 chars
no case OK 70s 4 2 5417 chars
report: current state
- [2026-09-18] The BOJ raised its policy rate (uncollateralized overnight call rate) by 25bp to 1.25% at its September 17-18 meeting, the highest level since 1995, with two board members dissenting in favor of holding. It took the uncollateralized overnight call rate to 1.25% from 1%, and the policy rate is at its highest level since 1995. The decision was split 7-2, with board members Toichiro Asada and Ayano Sato dissenting from the hike, with the BOJ citing a risk that inflation will deviate upward to beyond its 2% target. - [2026-09-18] This marked an acceleration in the tightening pace: the move marked a quickening in the BOJ's rate hike cycle since it started monetary policy normalization in March 2024, with the rise taking place three months from the BOJ's last hike, as compared to six months previously. - [2026-09-11] A Bloomberg survey of 52 economists conducted before the September decision found unanimous expectation of the September hike, but strong consensus against a back-to-back October hike: all 52 BOJ watchers forecast borrowing costs would be raised at the end of the September meeting, with some 93% expecting another move by January — around one-third predicting December — and no one predicting a back-to-back hike in October. - [2026-09-18] At his post-meeting press conference, Governor Ueda left the door open to further action but stressed data-dependence and cautioned against assuming rapid consecutive hikes: Ueda said if the BOJ were to do big rate hikes or consecutive rate hikes, that would depend on whether Japan sees very big inflation risks or inflation sharply overshooting target, comparing it to what the US and European central banks did, adding underlying inflation hasn't exceeded 2% yet and the BOJ wants to keep it that way, which is why it would like to act pre-emptively. - [2026-09-18] Ueda also indicated the Bank wants more data before its next major assessment: underlying inflation is now quite close to 2%, and the BOJ's goal has become to have this stabilize, but this phase has just started, with the BOJ seeking to quantify the impact of rate hikes at its next quarterly report in October. - [2026-09-21] BOJ board member Kazuyuki Masu signaled continued gradual tightening rather than urgency for an immediate follow-up hike: Masu said the central bank will continue raising its policy rate and adjust monetary accommodation as underlying inflation nears 2%, noting the pace of hikes will hinge on progress toward the July baseline scenario and risks from crude oil, AI-driven demand and FX moves. - [2026-09-25] Official Bank of Japan schedule confirms the next Monetary Policy Meeting is October 29-30, 2026, with the Statement on Monetary Policy and Outlook Report ("Bank's View") due October 30, matching the question's resolution date; this is a quarterly Outlook Report meeting. - [2026-09-18/24] Market-implied pricing (via TONA futures, per a third-party tracker) shows very high probability of a hike being priced in cumulatively by the October meeting, though the tool's own methodology used a 25bp increment grid at launch and its headline "50bp hike" framing appears to reflect cumulative multi-meeting easing rather than a confirmed single 50bp move at October specifically; the tool states markets price roughly 108bp of tightening (~4.3 hikes) across the next 7 meetings, with the current policy rate listed as 1.25%. - [2026-08-25] Ahead of September, a former BOJ board member argued the case for continued tightening on a several-month cadence: Seiji Adachi said the BOJ would probably raise its benchmark rate in September and follow up with another increase as early as January. - [2026-09-11] Bloomberg's survey pattern for 2026 shows economists broadly expect roughly semi-annual (six-monthly) hike cadence historically, though the September move already compressed that interval to three months, raising some uncertainty about whether October could also see action, but no surveyed economist called for it. BOTTOM LINE: The BOJ hiked 25bp in September 2026 (to 1.25%), and the dominant survey/analyst consensus as of mid-to-late September is for a pause at the October 29-30 meeting, with the next hike more likely in December or January 2026/27; Governor Ueda's post-meeting remarks emphasized data-dependence and downplayed the likelihood of rapid consecutive hikes absent an inflation overshoot. NOT FOUND: No post-September 18 Bloomberg or Reuters economist survey specifically covering the October meeting was found (i.e., an update to the September 11 survey conducted after the hike); no official BOJ Summary of Opinions from the September meeting was reviewed in full (scheduled for Oct. 1, 2026, per the BOJ calendar), which would give more granular insight into board members' October leanings.
report: base rate
- [2026-09-18] The BOJ raised its policy rate 25bps to 1.25% at the September meeting, a hike that was unanimously expected: The Bank of Japan raised rates on Friday in a move that was widely expected, taking the uncollateralized overnight call rate to 1.25% from 1%, the highest level since 1995. All 52 economists surveyed by Bloomberg between Sept. 4 and Sept. 10 believed that the BOJ would do so. - [2026-09-18] That September hike itself came unusually fast after the prior move: The hike came just three months after the previous increase, the shortest interval between hikes since 1990. This shows the BOJ has historically preferred longer gaps (typically ~6 months) between consecutive hikes. - [2026-09-11] A Bloomberg survey of BOJ watchers taken just before the September decision found strong consensus against a second consecutive (back-to-back) hike in October: Some 93% expect another move by January, with around one-third predicting it could come in December. The rest picked January, with no one predicting a back-to-back hike in October. - [2026-06-18] Earlier in the cycle (June 2026), a similar Bloomberg poll after that hike showed October picked by a minority: Some 90% of 44 economists forecast the BOJ will raise its benchmark rate from 1% by the December meeting, with December the most popular timing at 52%, while 36% say it'll come in October. This illustrates a recurring pattern of most economists favoring the meeting-after-next rather than the immediate next meeting following a hike. - [2026-09-10] A Reuters poll around the September meeting showed a split on subsequent timing: Twenty-four of 66 economists in the Reuters survey expected another increase to 1.50 percent in either October (implying roughly a third, not a majority, favored October at that time — before the "no one" result of the later Bloomberg poll on Sept 11). - [2026-09-24] Market-implied pricing (OIS-derived, rateprobability.com) as of the latest data puts only a minority probability on an October 25bp hike: the site shows a "34% HIKE" probability with roughly +8.5bps priced for the October 30, 2026 meeting, well below the ~50%+ threshold needed for a "likely" resolution. - [2026-09-24] The same tracker's meeting table shows implied post-meeting rate for Oct 30, 2026 at only 1.11% (vs. current 1.25%), i.e., markets are pricing a hike as more likely to land in December than October, consistent with the historical 2-hikes-per-half-year cadence. - [n/a] A competing tracker (centralbank.watch, TONA-futures based) shows a much higher headline figure ("100% odds of a rate hike," "84% odds of 50bp hike") for the October meeting, but this page contains internally inconsistent and apparently stale content (mixing current-rate references of both 0.5% and 1.25%, and meeting-schedule tables still listing 2025 dates), so it is treated as less reliable than the OIS-based rateprobability.com dashboard for this specific dimension. - [2026 pattern, cumulative] Over 2025-2026 the BOJ's normalization path has proceeded largely one hike every other meeting (hold-hike-hold-hike), with the single exception of the June→September back-to-back-quarter hike that was itself called the "shortest interval…since 1990," reinforcing that immediate back-to-back hikes are historically rare for this central bank. - [2026-08-22] Even before the September hike, ING's analyst noted only partial market pricing for an October move as a base case at that time: A 25bp hike in October is currently priced with a 42% probability. That was before the September hike actually landed; post-hike pricing (per rateprobability.com) has since drifted lower, near 25-34%, consistent with survey evidence that most economists expect the "next" hike in December or January rather than October. BOTTOM LINE: The reference class of BOJ tightening cycles shows the bank has historically avoided hiking at two consecutive meetings, doing so only once (June→September 2026) in an unusually compressed cycle described as the shortest gap since 1990; the immediately following Bloomberg economist survey found no respondents expecting a further back-to-back hike in October, and OIS-market pricing as of late September assigns only roughly a 25-34% probability to an October hike, both pointing toward "No change" as the modal/base-rate outcome for the October 2026 meeting, though not with overwhelming certainty. NOT FOUND: A long-run (pre-2020) historical frequency table of BOJ back-to-back-meeting hikes; the primary BOJ statement/minutes for the October 2026 meeting (not yet released, as trading closes Oct 30, 2026 same day as the meeting decision); a single authoritative, non-conflicting real-time market-probability figure (the two trackers found disagreed significantly, and one appeared to have stale/inconsistent underlying data).
report: yes case
- [2026-09-02] Board hawk Hajime Takata, the BOJ's most consistent tightening advocate, called for "nimble" rate hikes not tied to a fixed pace, saying "I believe that the Bank needs to conduct rate hikes nimbly after gauging the degree of accommodation in domestic financial conditions, in addition to examining developments overseas." This framing, which Ueda later echoed as a "new phase" at the September meeting, provides an internal doctrinal basis for breaking the historical semi-annual cadence again in October. (bloomberg.com) - [2026-09-03] U.S. Treasury Secretary Scott Bessent publicly weighed in on Japan's rate path, and was asked whether the BOJ should consider consecutive rate hikes to combat yen weakness, to which he said he expected Governor Kazuo Ueda to "do the right thing." Sustained U.S. pressure for faster tightening adds an external-political tailwind for another near-term move. (stonex.com) - [2026-09-24] Despite the September hike, yen weakness has persisted rather than reversed: the yen weakened to around 157.6 per dollar on Wednesday, remaining under pressure and keeping traders alert for possible intervention amid an extended holiday in Japan, with concerns intensified following reports that the Bank of Japan conducted a rate check with market participants last Friday. A BOJ rate check is itself a signal of active FX-intervention preparation, and historically FX-driven urgency has been a trigger for faster/earlier hikes. (tradingeconomics.com) - [2026-09-22] Currency strategists note the divergence risk explicitly: the Fed's hawkish hike and a somewhat more dovish BoJ have reversed the yen's bullish trend, with the Fed's hawkish turn offsetting the impulse of the BoJ's monetary tightening plans. If USD/JPY pushes toward 158-160 into late October, the BOJ has previously used rate action (not just verbal intervention) to arrest disorderly yen declines, which is the single most plausible external shock that could force an October move despite the current base case of a pause. - [2026-09-19] Even market pricing that treats October as unlikely still shows the door is not closed: a specialist tracker citing OIS pricing noted the Dec meeting is priced 63% probability for another hike, or 1.41% on the OIS implied curve, and the January meeting is 100% priced for 1.50% — implying markets already treat continued tightening as near-certain over the next two meetings, so any hawkish data surprise (e.g., a hot September Tokyo/national CPI print, released before Oct 30) could pull the "December hike" forward into October rather than requiring markets to price a hike from scratch. - [2026-09-18/19] The precedent for compressed timing was just set: this cycle already saw economists expect the BOJ to raise rates by 25 basis points to 1.25%, marking the second rate hike by the central bank within three months, the fastest tightening pace since 1990 . Having already broken the "one hike per half" norm once, the psychological and communicative barrier to doing so again in October (three-months-into-three-months) is lower than it was before September. - [2026-09-18] Governor Ueda did not rule out October, and structured his conditionality around data, not calendar: Ueda said that the BoJ would need to check the impact of the rate change each time before moving again (comment pattern consistent across cycles) — meaning a strong Tankan (due early October) or hot CPI print in the weeks before the Oct 29-30 meeting could satisfy that data bar and justify another hike, especially if framed as pre-emptive given the BOJ's own concern flagged in the Sept 18 statement about inflation risk skewed to the upside. - [2026-09-10] Board member Kazuyuki Masu, while gradualist in tone, flagged multiple concrete upside inflation channels feeding into the October Outlook Report: the pace of hikes will hinge on progress toward the July baseline scenario and risks from crude oil, AI-driven demand and FX moves (per colleagues' Sept 21 report) — and TradingEconomics separately reports Masu warning that higher fuel and chemical costs tied to the Iran situation could prove more than temporary by lifting distribution and other expenses, giving the board a documented, board-level justification for treating October as "live" if oil/FX data deteriorate further before the meeting. BOTTOM LINE: The most credible YES path is not a base-rate repeat of September but a shock-driven one: continued yen depreciation past ~158-160 (already flagged by an active BOJ rate check on Sept 24) combined with a hot pre-meeting inflation/Tankan print would let hawks like Takata invoke the newly-declared "nimble, non-fixed-pace" 2026 doctrine and Bessent-style external pressure to justify a second consecutive hike, even though this is currently a tail scenario relative to the priced-in December/January path. NOT FOUND: No post-September-24 Reuters/Bloomberg economist poll taken after the yen's slide to 157-158 was located; no confirmation of an actual, official BOJ currency intervention as of Sept 25; no Tankan (October) release data yet as it postdates this research window.
report: no case
**Survey/analyst consensus still favors a pause** - [2026-09-11] The Bloomberg survey taken just before the September hike found some 93% of BOJ watchers expect another move by January, with around one-third predicting December, and no one predicting a back-to-back hike in October (bloomberg.com). - [2026-09-10] Even the more hawkish Reuters poll around the same date showed a minority, not majority, favoring October: 24 of 66 economists in the Reuters survey expected another increase to 1.50 percent in either October or December , and the same roundup noted Nomura Securities continues to assign a 60 percent probability to an October hike as its main scenario, while putting the probability of a September move at just 10 percent — Nomura's own pre-meeting probability of a September move (which happened) proved too low, undercutting confidence in its October call too (ajupress.com). **Market pricing (primary-ish OIS dashboard) leans NO** - [2026-09-24] rateprobability.com's live snapshot, timestamped 16:00 on 09/24/2026, shows the October 30 meeting priced at only a **34% probability of a hike** (+8.5bps expected), well under the 50% threshold needed for "likely," with the current Target O/N Call Rate correctly shown at 1.25% post-September hike (rateprobability.com). - [2026-09-24] The same site's meeting-by-meeting table is internally inconsistent with its own headline box (showing an Oct 30 "hike probability" of 25.6% and an implied post-meeting rate of 1.11%, below the already-current 1.25%), indicating the underlying model has not fully reconciled the September hike — a data-quality flag that argues for caution in trusting any single tracker's number, but every version of this tracker's numbers is well below 50% (rateprobability.com). - [2026-09-2x] A competing TONA-futures tracker (centralbank.watch) claims "100% odds of a rate hike" and "84% odds of a 50bp hike" for what it lists as an "October 28, 2026" meeting — a date that does not match the BOJ's actual confirmed October 29–30 schedule, undermining the reliability of that figure as evidence for a hike (centralbank.watch). **Political/fiscal friction argues for delay, not haste** - [2026-09-18] Prime Minister Takaichi's two board appointees, Toichiro Asada and Ayano Sato, were the two dissenters against the September hike, and Takaichi has previously dismissed the very idea of additional rate hikes as "stupid," reinforcing perceptions she remains opposed to further tightening (asiatimes.com). - [2026-09-18] After Ueda's press conference, the yen weakened 1% after Ueda spoke on Friday, suggesting markets didn't sense much hawkishness in his remarks — a market read that argues against imminent follow-through (asiatimes.com). - [2026-08-25] Government economic adviser Aida's own timeline argument for a rate hike explicitly cited a narrow window for a hike before an extraordinary parliamentary session convenes in early October, where lawmakers will debate legislation related to Takaichi's plan to suspend an 8% levy on food items for two years — implying the BOJ had incentive to hike in September precisely to get it done *before* the politically sensitive tax-cut debate, not to hike again in the middle of it (indexbox.io). **Mechanism/base-rate arguments** - [2026-09-18] The September hike itself was already the shortest interval between hikes since 1990, and followed increased pressure from Washington — a one-off compression driven by external (US) pressure rather than a new normal cadence, making reversion to the historical ~2-per-year, non-consecutive pattern the more likely base case for October (tradingeconomics.com). - [2026-09-18] Governor Ueda's own framing pointed to using the October Outlook Report only to "quantify the impact" of the just-delivered hike rather than to act again immediately, per his post-meeting comments already flagged by colleagues — consistent with the BOJ's historical practice of using quarterly Outlook meetings for reassessment, not necessarily action. - [2026-09-25] BOJ's own schedule confirms October 29–30 is a quarterly Outlook Report meeting with the "Bank's View" due exactly on the question's resolution date of October 30 — meaning even a narrow delay in decision timing or communication (BOJ does not commit to a fixed release time) creates technical/timing risk for the market to resolve cleanly by close, independent of the substantive decision (boj.or.jp). BOTTOM LINE: The dominant economist consensus (Bloomberg, Sept 11), OIS market pricing (rateprobability.com, Sept 24, ~34% hike odds), Takaichi-appointee dissent and political optics, and the BOJ's own historical avoidance of back-to-back hikes (except the just-completed, externally-pressured September move) all point toward a "No change" outcome at the October 29–30 meeting, with only a minority of forecasters (e.g., Nomura) and one methodologically inconsistent tracker suggesting otherwise. NOT FOUND: A post-September-18 Reuters or Bloomberg economist survey specifically re-polling views on the October meeting (only pre-hike surveys were located); the BOJ's official Summary of Opinions from the September meeting (scheduled Oct. 1, 2026) was not available in full at time of writing; confirmation of whether the early-October extraordinary Diet session on the consumption-tax cut has been formally scheduled to overlap with or precede the Oct 29-30 BOJ meeting.
3. Forecasters 5 draws · Opus 5.5 + GPT-5.6 Sol · plain mean
claude-opus-5-5
62% conf
Yes 16%
No 84%
(0) Not resolved yet. The BOJ schedule page shows the October 29–30 meeting still ahead, with the statement due October 30. The policy rate is 1.25% after the September 18 hike of 25bp. (a) About five weeks remain. Before the meeting come the September Summary of Opinions (Oct 1), the Tankan, CPI prints and the October Outlook Report. (b) The status quo is no change. The Bloomberg survey of Sept 4–10 found no economist expecting a back-to-back October hike, with a third picking December and the rest January. At his press conference Ueda said consecutive hikes would need a sharp inflation overshoot, and he framed October as the meeting to quantify the impact of past hikes. Board member Masu sounded gradualist, and the two appointees of Prime Minister Takaichi dissented even in September. (c) NO scenario: data comes in steady, the yen stabilizes, and the BOJ holds at 1.25% while signalling December or January. (d) YES scenario: the yen slides past 158–160 (a BOJ rate check has already been reported) and a hot CPI or Tankan print arrives. Hawks like Takata then invoke 'nimble' hikes under U.S. pressure and pull the December move forward. On market pricing, the OIS tracker's 25–34% looks unreliable: its implied 1.11% post-meeting rate sits below the current rate, so it appears to be on a stale base. The other tracker's 84% for a 50bp hike is clearly stale. I anchor on Polymarket's 18% and shade slightly lower given the unanimous survey consensus against October, while keeping a meaningful tail for an FX-driven shock.
claude-opus-5-5
62% conf
Yes 15%
No 85%
(0) Not resolved: the BOJ schedule page shows the October 29-30 meeting with the Statement due Oct 30, and no decision posted yet. (a) About five weeks remain until the Oct 30 decision, with the Tankan, the Sept 18 meeting's Summary of Opinions and September CPI all landing before then. (b) Status quo is no change. The BOJ just hiked 25bp to 1.25% on Sept 18, already the shortest interval between hikes since 1990, and a hike in October would mean back-to-back meetings, which the Bank has essentially never done. The Bloomberg survey of 52 economists (Sept 11) had zero respondents expecting an October move, and Ueda said consecutive or large hikes would need a sharp inflation overshoot. Ueda plans to use the October Outlook Report to quantify the effect of past hikes. (c) NO: the Tankan and CPI are unremarkable, the yen stabilizes near 155-158, and the board waits for December or January. The dissents from Takaichi's appointees and the political optics of the consumption-tax debate reinforce a pause. (d) YES: USD/JPY breaks toward 160 after the BOJ's reported rate check, a hot CPI print arrives, and US pressure mounts, so hawks like Takata invoke 'nimble' hikes and pull the December move forward. The Polymarket anchor is 18% and drifting up. The OIS tracker's ~25-34% reading is internally inconsistent (its implied rate is below the current 1.25%), so I discount it and shade slightly below the market to 15% given the strong back-to-back base rate.
claude-opus-5-5
62% conf
Yes 17%
No 83%
(0) Not resolved: the BOJ page shows only the Oct 29-30 schedule; YES needs a 25bp hike to 1.50% announced Oct 30. (a) About five weeks remain, with the Summary of Opinions, Tankan and September CPI still to come. (b) Status quo is a hold: the BOJ just hiked to 1.25% on Sept 18, Ueda said consecutive hikes need a sharp inflation overshoot, and he plans to quantify hike effects in the October Outlook Report. (c) NO: the BOJ reassesses and signals Dec/Jan, matching the Bloomberg survey (0 of 52 expecting October) and the lack of any consecutive-meeting hike this cycle, plus Takaichi-appointee dissent. (d) YES: the yen breaks 158-160 after the reported rate check, a hot Tankan/CPI arrives, and hawks invoke 'nimble' hikes under US pressure, pulling December forward. The Polymarket anchor is 18%, trending up; OIS trackers show 25-34% but are internally inconsistent, while surveys point lower. I stay near the market at 17%.
gpt-5.6-sol
73% conf
Yes 18%
No 82%
(0) The event is not resolved: the official BOJ page only schedules the October 29-30 meeting and statement, so a qualifying rate increase must still be announced on October 30. (a) About 35 days remain from September 25 until that decision. (b) If nothing changes, the BOJ holds its current 1.25% policy rate and the market resolves No. (c) The main No scenario is a pause after September's unusually rapid 25-basis-point hike, consistent with Governor Ueda's data-dependent language, two dissents, and a Bloomberg survey in which none of 52 economists expected an October back-to-back hike. (d) The Yes scenario requires persistent yen weakness near or beyond 158-160, accompanied by unexpectedly strong inflation or Tankan data, prompting the BOJ to bring a December or January hike forward. I retain Polymarket's 18% Yes price as the anchor because its $50,069 market and the related 81.5% no-change bracket coherently favor a pause; conflicting OIS estimates of roughly 25-34% are too internally inconsistent to justify moving above the venue consensus.
gpt-5.6-sol
68% conf
Yes 20%
No 80%
(0) The BOJ resolution page shows that the October 29-30 meeting is scheduled but no statement or decision has been released, so the condition is neither met nor impossible; a roughly 25bp increase from the pre-meeting rate must be announced, with the fallback deadline extending to the next scheduled meeting if no statement appears. (a) There are about 35 days until the scheduled October 30 statement. (b) If nothing changes, the BOJ holds at 1.25% after its September 25bp hike and this resolves No. (c) The main No scenario is that the BOJ pauses to assess September's unusually rapid tightening, consistent with Ueda's data-dependent comments, the two September dissenters, and a Bloomberg survey in which none of 52 economists predicted an October hike. (d) The Yes scenario is that persistent yen weakness near 158-160, hot inflation or Tankan data, and upside oil-price pressure induce a pre-emptive consecutive 25bp hike. I anchor on Polymarket's 18% Yes price and move only slightly higher because the cited OIS estimate of 25-34% and continued yen weakness provide some upside, while the OIS tracker has internal inconsistencies and the dominant survey and historical-cadence evidence still favor a pause.
4. Final plain mean of 5 draws
17% (65% confidence)
Yes: 17% No: 83%
Mean of 5 draws (0.16, 0.15, 0.17, 0.18, 0.20). (0) Not resolved yet. The BOJ schedule page shows the October 29–30 meeting still ahead, with the statement due October 30. The policy rate is 1.25% after the September 18 hike of 25bp. (a) About five weeks remain. Before the meeting come the September Summary of Opinions (Oct 1), the Tankan, CPI prints and the October Outlook Report. (b) The status quo is no change. The Bloomberg survey of Sept 4–10 found no economist expecting a back-to-back October hike, with a third picking December and the rest January. At his press conference Ueda said consecutive hikes would need a sharp inflation overshoot, and he framed October as the meeting to quantify the impact of past hikes. Board member Masu sounded gradualist, and the two appointees of Prime Minister Takaichi dissented even in September. (c) NO scenario: data comes in steady, the yen stabilizes, and the BOJ holds at 1.25% while signalling December or January. (d) YES scenario: the yen slides past 158–160 (a BOJ rate check has already been reported) and a hot CPI or Tankan print arrives. Hawks like Takata then invoke 'nimble' hikes under U.S. pressure and pull the December move forward. On market pricing, the OIS tracker's 25–34% looks unreliable: its implied 1.11% post-meeting rate sits below the current rate, so it appears to be on a stale base. The other tracker's 84% for a 50bp hike is clearly stale. I anchor on Polymarket's 18% and shade slightly lower given the unanimous survey consensus against October, while keeping a meaningful tail for an FX-driven shock.
Pipeline Timing
Total pipeline time: 134.3s
Per-tool research timings shown in the Research section above.