Scan: Ukraine signs peace deal with Russia before 2027?

date	predicted	market price	confidence
2026-08-23	12%	14%	69%
2026-08-16	12%	16%	70%

1. Planner Fable 5.1 · Fermi decomposition + tool plan

Tools chosen: polymarket_direct polymarket_related kalshi_related claude_news article_search gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

What is the current Polymarket price for this market and how has it trended over the past 90 days?
What is the current status of US-brokered Russia-Ukraine peace negotiations (e.g., the 20/28-point plan, trilateral talks) and has any draft text been agreed for signature by both sides?
What are the remaining sticking points (Donbas territorial concessions, security guarantees, Zaporizhzhia plant, NATO) and have Russian or Ukrainian officials indicated flexibility or hardening in the last 30 days?
Do related prediction markets (Kalshi/Polymarket ceasefire-by-date markets, 'Trump ends war' markets) imply a probability consistent with this market, and what is the implied hazard rate through 2026?
How is the battlefield and economic situation (Russian offensives, Ukrainian manpower, Russian economy/oil revenue, sanctions) shifting incentives for either side to sign in 2026?
Has Ukraine signed any written document that includes Russia as a party (e.g., a joint framework or mediated text) since 2025, and does Ukrainian law/politics (referendum requirement, elections) constrain Zelensky's ability to sign?
What is the historical base rate for wars of this type/duration ending with a signed ceasefire or framework within a ~12-month window once active mediated talks are underway?

Planner reasoning

This is a geopolitical question with a long horizon (through end of 2026) about whether Ukraine signs a qualifying bilateral instrument with Russia. Key drivers are the state of US-brokered negotiations (Trump peace plan, Witkoff/Kushner talks, Geneva/Abu Dhabi rounds), whether Russia's maximalist demands can be bridged, Ukraine's political constraints (elections, referendum), and the specific resolution nuance that a signed 'framework/roadmap' with both as parties qualifies even without Russia signing. The Polymarket price is the primary anchor, with Kalshi cross-market checks and recent news for the negotiation trajectory.

2. Research Parallel tool calls

tool	status	time	items	summary
polymarket_direct	OK	0.7s	1	## This Market's Polymarket Data Ukraine signs peace deal with Russia before 2027? - Current price (probability): 10.50% - 7-day price change: +2.00% - 30-day price change: -5.00% - Total volume: $2,770,099 (USD notional) - Price range: 8.50% - 29.50% - Data points: 90 days
polymarket_related	OK	0.5s	14	Polymarket search over 4 keyword(s), kept 14 matches. keyword 'Ukraine ceasefire': 6 markets \| keyword 'Russia Ukraine peace': 6 markets \| keyword 'Zelensky Putin': 1 markets \| keyword 'Ukraine Russia deal': 1 markets
kalshi_related	OK	8.8s	3	3 related markets / summaries. keyword 'Ukraine ceasefire': ok \| keyword 'Russia Ukraine peace deal': ok \| keyword 'Putin Zelensky': ok
claude_news	OK	22.2s	10	Based on research (as of mid-September 2026): - Talks resumed after 6-month hiatus: After a six month hiatus, fresh US-led peace talks were held with Russia and Ukraine in early September 2026, with US Special Envoy Steve Witkoff and Jared Kushner making separate visits to Russia and Ukraine.
article_search	OK	1.0s	17	Fetched 17 unique articles across 4 queries (lookback=30d). 'Ukraine Russia peace deal signing framework agreement': 10 articles \| 'Zelensky peace plan Donbas security guarantees talks': 10 articles \| 'Putin conditions ceasefire Ukraine negotiations': 10 articles \| 'Ukraine referendum territorial co
gdelt_news	OK	200.8s	10	GDELT: 10 articles across 3 queries (lookback=21d). 'Ukraine Russia ceasefire agreement': error GDELT rate-limited after retries (429) \| 'Ukraine peace talks Witkoff Kushner': error GDELT rate-limited after retries (429) \| 'Zelensky sign peace deal': 10 hits
wikipedia	OK	0.4s	3	Fetched 3 Wikipedia entries (0 missing pages).
code_execution	OK	38.7s	0	Note on inputs: Live market odds were not supplied in the prompt, so the figures below use representative/illustrative prediction-market cumulative probabilities (10% by ~3mo, 22% by ~9mo, 32% by ~15mo out) fit to a constant-hazard survival model. Replace with actual scraped odds for a productio

3. Evidence Brief Sonnet 5 · 8189 chars

# Current state The market resolves YES only if Ukraine signs a written instrument with Russia as a co-party that ends hostilities or commits both sides to a defined peace process, by Dec 31, 2026. As of mid-September 2026, US-brokered talks (Witkoff/Kushner) have resumed after a ~6-8 month freeze, but no draft text has been agreed, no signing is scheduled, and Russia has made zero concessions on its core territorial/NATO demands. Trilateral talks (US-Ukraine-Russia) are "proposed and accepted in principle" for October 2026 but unscheduled and uncertain in seniority level. # Timeline of key events - 2022-02 to 2022-2023: Early war-time talks (Belarus, Antalya) collapse; no agreement (confirmed, Wikipedia). - 2025 (from Jan): Trump admin restarts peace diplomacy; plans favor Russia, rejected by both sides at various points (confirmed, Wikipedia). - 2026-02 (~Feb 8): Zelensky says US wants a deal concluded "by June 2026" (reported, newsonair.gov.in) — deadline passed with no deal. - 2026 (spring–summer): Talks stall/freeze for ~6-8 months; Russia rejects front-line ceasefire, demands Donbas cession + NATO renunciation (reported, Kyiv Independent). - 2026-09-05/06: Witkoff and Kushner visit Moscow (3+ hrs with Putin) then Kyiv (meet Zelensky); 72-hour capital-only truce enacted during visit; "substantive progress," "movement on scheduling" trilateral talks announced, but no text agreed (confirmed multi-source: CNN, CBS, BBC, Reuters via CNBC). - 2026-09-09: Ukraine's allies reportedly expect war to extend into 2027 post-talks (reported, Straits Times). - Planned/unscheduled: Trilateral (US-Ukraine-Russia) talks in UAE "expected October 2026," no date set (reported, Commons Library). - 2027-02: War reaches 4-year mark if unresolved (structural fact). # Event Will Ukraine sign a written peace/ceasefire/framework instrument with Russia as co-party before Jan 1, 2027? # Outcomes to forecast Yes / No # Kalshi market anchor No kalshi_direct data was returned for this specific ticker in this research pass (only kalshi_related comparables). The primary same-ticker anchor available is Polymarket: **10.5% YES**, 7d +2.0%, 30d -5.0%, volume $2.77M, 90-day range 8.5%-29.5% (price decayed sharply from a high near 30% earlier in the window, consistent with the mid-2026 talks freeze, then a small recent uptick on September's renewed diplomacy). # Resolution source Resolution is by "consensus of credible reporting" — no single official tracking page; status quo per current reporting (Sept 2026) is clearly NOT met (no signed document, no scheduled signing). # Sub-question answers 1. **Polymarket price/trend** — 10.5% currently; -5% over 30d, +2% over 7d; ranged 8.5%-29.5% over 90 days, implying markets priced much higher odds earlier (likely on spring 2026 talk momentum) before the freeze. [polymarket_direct] 2. **Status of talks/draft text** — Talks resumed Sept 2026 after ~6-8 month hiatus via Witkoff/Kushner shuttle diplomacy; "ideas" and "proposals" discussed but no agreed draft text; trilateral UAE talks proposed for October, unscheduled. [claude_news, CNN, Commons Library] 3. **Sticking points** — Donbas cession and NATO membership renunciation remain core, unresolved Russian demands; Zaporizhzhia and security guarantees also unresolved. No sign of Russian flexibility in last 30 days; Putin cites Ukrainian strikes as complicating factor; Zelensky insists territory issue must be resolved "at leader level." [Kyiv Independent, Modern Diplomacy, Commons Library] 4. **Cross-market implied hazard** — Polymarket's own "ceasefire by Dec 31 2026" market prices 22.5% YES; "peace talks by Dec 31 2026" prices 69% (a much lower bar than a signed deal); Kalshi's Putin-Zelensky meeting market is only 16% "before 2027." These suggest markets see meetings/talks as plausible but a binding signed instrument as materially less likely (~10-22% range). A code-based hazard extrapolation (using illustrative, not verified, inputs) estimated ~32-34% for a broader "ceasefire/framework," above actual market pricing — treat this figure with caution as it used assumed rather than scraped data. 5. **Battlefield/economic incentives** — Not directly detailed in raw research beyond Kremlin's claim of "real progress on the battlefield" and confidence of achieving goals without concessions; no evidence of urgent economic pressure forcing Russia to sign. [CNBC/Kremlin readout] 6. **Prior signed documents / legal constraints** — No evidence Ukraine has signed any joint document with Russia since 2025; Minsk-style precedent (unsigned Ohrid-type arrangements explicitly excluded by rules) shows history of stalled/unsigned frameworks. Ukrainian legal/referendum constraints on territorial concessions not directly addressed in research (gap). 7. **Historical base rate** — Not empirically sourced beyond a rough model estimate (15-45% annual hazard band, midpoint 30%) for mediated interstate wars of similar duration; Minsk agreements (2014-2015) show even signed frameworks often fail implementation, and full peace treaties often lag ceasefires by years (e.g., Korea armistice 1953, no treaty since). [code_execution model, Wikipedia Minsk] # Key facts (high-confidence, factual) 1. [polymarket_direct] Current YES price 10.5%, down from a 90-day high of 29.5%. 2. [CNN/CBS/BBC, Sept 2026] Witkoff/Kushner Moscow+Kyiv trip produced "progress" but no draft text or signing date. 3. [Kyiv Independent] Russia continues to demand full Donbas cession and NATO renunciation; no concessions signaled. 4. [Commons Library] Trilateral UAE talks "accepted in principle" for October 2026, unscheduled. 5. [newsonair.gov.in] A prior "by June 2026" deadline floated by Zelensky/US passed without agreement. # Cross-market signals - Polymarket related: "Ceasefire by Dec 31 2026" = 22.5% YES (looser bar than this market); "peace talks by Dec 31 2026" = 69% (much looser bar, meetings/talks suffice). - Kalshi related: "Putin-Zelensky meet before 2027" = 16%; "Trilateral meeting before 2027" = 6%; Ukraine presidential election before 2027 = 8% (down 22pp in 30d, suggesting reduced expectation of near-term political upheaval). - No sportsbook data available. # Analyst opinions and speculation - Claude_news synthesis: "a signed peace deal before January 2027 remains uncertain/unlikely but not impossible given active diplomatic momentum." - Straits Times (Sept 9, 2026): Ukraine's allies now expect war to extend into 2027. - CNN (Sept 11): "Trump's new Ukraine push is already being undermined" — signals fragility of recent momentum. # Directional lean per outcome - **Yes**: Renewed high-level US engagement (Witkoff/Kushner), trilateral talks floated, Trump's political incentive to claim a win, capital-truce precedent shows some tactical cooperation capacity. - **No** (favored): No draft text exists; Russia unmoved on core demands; prior deadlines (June 2026) missed; 6-8 month negotiation freezes have recurred; Polymarket pricing only 10.5% and trending down over 30 days; market bar (signed instrument, Ukraine's signature) is stricter than looser "talks" markets already pricing lower than expected. # Gaps / unknowns - No live Kalshi YES price for this exact ticker was retrieved (only Polymarket, treated as proxy anchor). - Ukrainian legal/referendum constraints on signing territorial concessions not detailed. - Battlefield momentum (Russian gains/losses, Ukrainian manpower, sanctions/oil revenue trends) not covered in raw research — meaningful gap for sub-question 5. - Code-execution hazard model used illustrative, not real, market data — its 32-34% figure is unreliable and should not be weighted heavily. # Calibration anchors - Kalshi/Polymarket current YES price (anchor): **10.5%** (Polymarket, same ticker), down from 30-day high ~29.5%. - Related tighter-bar market ("ceasefire by Dec 2026"): 22.5%; looser-bar ("peace talks by Dec 2026"): 69% — brackets this market's stricter "signed instrument" bar below the ceasefire market. - Historical precedent: Minsk I/II signed but poorly implemented within ~1 year of active mediated talks; full peace treaties often take years beyond ceasefires (Korea: 70+ years, no treaty).

4. Forecasters 5 draws · Fable 5.1 + GPT-5.6 Sol

claude-fable-5-1

62% conf

Yes	10%
No	90%

With roughly 3.5 months remaining, the status quo is clearly unmet: the Sept 2026 Witkoff/Kushner shuttle produced 'progress' but no agreed draft text, no signing date, and Russia has not moved on Donbas cession or NATO renunciation. Prior deadlines (June 2026) passed, talks froze for 6-8 months, and allies now expect the war to run into 2027. The Polymarket same-ticker anchor sits at 10.5% (down from a 29.5% 90-day high), bracketed by a looser 'ceasefire by Dec 31' market at 22.5% and a Kalshi trilateral-meeting market at only 6%, which is consistent with a signed instrument being a low-probability tail. I stay essentially at the market anchor, since renewed US engagement and Trump's incentive to claim a win keep a non-trivial tail alive but nothing in the brief suggests the market is mispricing.

claude-fable-5-1

62% conf

Yes	11%
No	89%

The Polymarket same-ticker anchor sits at 10.5% YES, decayed from a 29.5% 90-day high after the mid-2026 talks freeze, with only a small uptick on September's Witkoff/Kushner shuttle diplomacy. No draft text exists, Russia remains unmoved on Donbas cession and NATO renunciation, the June 2026 deadline passed unmet, and trilateral UAE talks remain unscheduled with allies openly expecting the war to run into 2027. Cross-market signals bracket this stricter 'signed instrument' bar below the 22.5% ceasefire market and near the 16% Putin-Zelensky meeting market, while the 6% trilateral-meeting market suggests even a summit is doubtful. Roughly 3.5 months remain, which is tight for moving from no text to Ukraine's signature, so I stay close to the market anchor with slight allowance for Trump-driven pressure producing a framework document.

claude-fable-5-1

58% conf

Yes	12%
No	88%

The same-ticker Polymarket anchor sits at 10.5% YES (down from a 29.5% 90-day high), and the brief documents no agreed draft text, no scheduled signing, and zero Russian movement on Donbas/NATO demands as of mid-September 2026, with roughly 3.5 months left. Renewed Witkoff/Kushner shuttle diplomacy and proposed (unscheduled) October trilateral talks provide some upside, and a signed ceasefire or framework document could plausibly qualify under the resolution definition, which is why the looser 'ceasefire by Dec 2026' market at 22.5% caps the plausible range. However, the June 2026 deadline already slipped, allies expect the war into 2027, Kalshi prices a Putin-Zelensky meeting at only 16%, and the Kremlin signals confidence in achieving goals militarily without concessions. I land slightly above the Polymarket price to reflect the definitional breadth (framework/ceasefire instruments count) and Trump's incentive to force a signing, but the status quo strongly favors No.

gpt-5.6-sol

74% conf

Yes	10%
No	90%

The 10.5% same-ticker Polymarket price is the best available anchor, with its recent decline indicating that earlier diplomatic optimism has faded. Renewed US shuttle diplomacy and proposed October trilateral talks keep YES plausible, but no draft, signing date, or confirmed senior-level meeting exists. Russia has shown no flexibility on Donbas, NATO renunciation, and other core disputes, while the earlier June deadline passed without agreement. Related markets distinguish likely talks from an actual agreement: peace talks are priced at 69%, but a ceasefire at only 22.5% and a Putin-Zelensky meeting at 16%. Given the strict written-instrument requirement and limited time remaining, the evidence supports staying near but slightly below the 10.5% anchor.

gpt-5.6-sol

73% conf

Yes	10%
No	90%

The 10.5% same-ticker Polymarket price is the best available anchor, and related markets distinguish plausible talks from a much less likely signed instrument. September diplomacy points modestly toward Yes because US shuttle talks resumed and October trilateral talks were accepted in principle, but no draft, date, or seniority level exists. The evidence strongly favors No because Russia has offered no concessions on Donbas or NATO, the June deadline already failed, and Ukraine's allies expect fighting into 2027. I shade slightly below the 10.5% anchor given the short remaining window and the stricter requirement that Ukraine and Russia actually sign a qualifying document.

6. Final plain mean of 5 draws

11% (66% confidence)

Yes: 11% No: 89%

Mean of 5 draws (0.10, 0.11, 0.12, 0.10, 0.10). With roughly 3.5 months remaining, the status quo is clearly unmet: the Sept 2026 Witkoff/Kushner shuttle produced 'progress' but no agreed draft text, no signing date, and Russia has not moved on Donbas cession or NATO renunciation. Prior deadlines (June 2026) passed, talks froze for 6-8 months, and allies now expect the war to run into 2027. The Polymarket same-ticker anchor sits at 10.5% (down from a 29.5% 90-day high), bracketed by a looser 'ceasefire by Dec 31' market at 22.5% and a Kalshi trilateral-meeting market at only 6%, which is consistent with a signed instrument being a low-probability tail. I stay essentially at the market anchor, since renewed US engagement and Trump's incentive to claim a win keep a non-trivial tail alive but nothing in the brief suggests the market is mispricing.

Pipeline Timing

Total pipeline time: 277.4s

Per-tool research timings shown in the Research section above.