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State of the economy at the end of 2026? — Stagflation

KXECONPATH-26-STAG · Economics · 2026-04-10
25%
Agent
28%
Market Price
-3.0%
Edge
40%
Confidence
Volume: 11,800
Spread: 2.0c
Days to resolution: 278
Markets in event: 4
Final Rationale
My independent estimate of 19.3% was based on joint probability of unemployment ≥5% and CPI ≥3.5% in Dec 2026, starting from U3~4.2% and CPI~3.0%. I ACCEPT Challenge 1 (math description error) as undermining reasoning confidence. I PARTIALLY ACCEPT Challenges 2 and 3: the unprecedented tariff levels (145% on China, broad 10%+ baseline) are more severe than typical trade disruptions, and with tariffs in effect for 12+ months by Dec 2026, cumulative labor market damage and persistent price-level effects are likely underweighted in my original sub-probabilities. I'd revise unemployment to ~35% and inflation to ~45%, yielding a joint probability with positive correlation around 22-25%. I ACCEPT Challenge 6 that the cumulative effect of sustained tariffs matters more than the remaining window. The market at 28% is reasonably close to my revised estimate; the remaining ~3pp gap likely reflects the market pricing in tail scenarios of tariff escalation or financial stress that I find somewhat less probable but cannot dismiss. I settle at 0.25, splitting the difference between my revised analytical estimate and the market signal.
Price vs. prediction
How the market moved after the agent's call. Solid blue line is the actual market price; dashed line is the agent's static forecast at $t{=}0$.
$n = 55$ follow-ups
1. Planner Opus · Fermi decomposition + tool plan
Tools chosen: kalshi_data kalshi_orderbook fred_data article_search web_search code_execution wikipedia_lookup
Sub-questions (Fermi decomposition)
  1. Will the U-3 unemployment rate be at least 5.0% in December 2026? (w=0.45)
  2. Will the CPI-U 12-month percent change be at least 3.5% in December 2026? (w=0.45)
  3. Will both the unemployment AND inflation thresholds be simultaneously met in December 2026? (w=0.10)
Planner reasoning
This question requires BOTH conditions to be simultaneously true in December 2026: U-3 unemployment >= 5.0% AND CPI-U 12-month change >= 3.5%. The joint probability is bounded by the minimum of the two individual probabilities. Current state (April 2026): unemployment is around 4.2% (needs +0.8pp rise in 8 months) and CPI is approximately 2.8-3.2% (needs +0.3-0.7pp rise). The 2025 tariff regime creates dual pressure - upward on prices (inflationary) and downward on employment (recessionary) - the classic stagflation mechanism. Key causal question is whether tariff pass-through sustains elevated CPI while simultaneously the labor market deteriorates enough to push unemployment above 5%. Historical reference: true stagflation periods in the US post-1990 are rare (roughly 3-5 out of 35 years). Temporal analysis: unemployment must rise ~0.1pp/month every month from April to December 2026 - feasible during recessions (2008 saw ~0.15pp/month) but requires a meaningful downturn. CPI at 3.5% is more achievable given tariff pass-through still in pipeline but requires sustained inflation rather than one-time price level shift. The Fed faces a dilemma: tightening to fight inflation accelerates unemployment rise (helps joint probability) while easing to support employment risks letting inflation run (also helps). Key uncertainty: will the tariff shock translate into a full recession or merely a slowdown, and whether inflation proves sticky enough.
2. Research Parallel tool calls · legacy v2
ToolStatusTimeItemsSummary
kalshi_data OK 2.2s -
kalshi_orderbook OK 0.4s -
fred_data OK 6.4s -
article_search OK 0.7s -
web_search OK 41.8s -
code_execution OK 0.0s -
wikipedia_lookup OK 1.6s -
3. Evidence Synthesis Sonnet · 0 items · legacy v2
#StrengthCredibilityDirectionSourceClaimPriced In
4. Independent Forecaster Opus · No market price · legacy v2 Did NOT see market price
Independent estimate: 19% (38% confidence)
base rate
20%
35% conf
evidence driven
20%
45% conf
contrarian
18%
35% conf
Spread
2pp
Low disagreement
sq1: Will the U-3 unemployment rate be at least 5.0% in December 2026?
30%
Base rate: U-3 has been at or above 5.0% in roughly 40% of months since 1990, but in the recent cycle (2022-2025), it has been well below 5%. As of early 2026, unemployment is approximately 4.2%. Reaching 5.0% requires a rise of ~0.8pp over 8 months (~0.1pp/month). Historical context: In the 2008 recession, unemployment rose ~0.15pp/month at its fastest. In the 2001 recession, it rose more slowly (~0.05-0.08pp/month). The 2025 tariff regime (significant tariffs on China, potentially broad tariffs) creates genuine recessionary pressure through supply chain disruption, reduced trade, and business uncertainty. However, several factors push down: the labor market has been remarkably resilient in recent years; fiscal spending remains elevated; services employment is sticky; and 8 months is a relatively short window. The tariff shock is real but partial - some tariffs may be negotiated down, and fiscal/monetary responses could cushion the blow. I estimate there's about a 30% chance unemployment reaches 5.0% by December 2026. The tariff shock pushes up from a baseline of maybe 15-20% (without tariffs) by about +10-15% given the scale of trade disruption.
sq2: Will the CPI-U 12-month percent change be at least 3.5% in December 2026?
40%
Base rate: CPI-U 12-month change has been at or above 3.5% in roughly 30% of months since 1990 (mostly concentrated in 2021-2023 and brief periods). Current CPI is approximately 2.8-3.2%. Tariff pass-through is the key mechanism: broad tariffs on Chinese goods (and potentially others) create direct upward pressure on consumer prices. Import prices feed through to CPI with a lag of 3-9 months, so tariffs imposed in 2025 should still be flowing through in late 2026. The magnitude depends on: (1) which tariffs remain in effect vs. negotiated away, (2) extent of pass-through vs. margin compression, (3) whether second-round effects (wage-price spiral) materialize. A tariff-driven CPI increase is somewhat one-time in nature, but if tariffs are maintained or escalated, the 12-month comparison could remain elevated. The Fed may be reluctant to tighten aggressively if the economy is weakening, allowing inflation to run hotter. Pushing up from a no-tariff baseline of ~15%: tariff pass-through adds +15-20%, and the Fed's likely reluctance to tighten into weakness adds another +5-10%. I estimate 40% probability.
sq3: Will both the unemployment AND inflation thresholds be simultaneously met in December 2026?
18%
This is the joint probability question. The two conditions are positively correlated in the stagflation scenario (tariff shock simultaneously raises prices and reduces employment), but they also have independent components that could prevent the joint event. If unemployment rises to 5%+, demand weakness could actually moderate inflation (negative correlation for demand-driven factors). But if the shock is supply-side (tariffs), both can occur simultaneously (positive correlation). Historical base rate for true stagflation months (U3>=5% AND CPI>=3.5%): roughly 10-15% of months since 1970, but much rarer post-1990 (maybe 5% of months, mostly in brief periods). Given the specific tariff mechanism and current trajectory, I estimate the joint probability at about 18%. This is below the simple product of independent probabilities (0.30 * 0.40 = 0.12) because the conditions are positively correlated in the tariff-shock scenario, pushing the joint probability up to ~18%.
Show full reasoning trace
base rate: True stagflation (U3>=5% AND CPI 12m>=3.5%) has occurred in roughly 5-10% of months post-1990 in the US. The current starting point (U3~4.2%, CPI~3.0%) means both thresholds are close but not yet met. Historical frequency of both conditions being met simultaneously in any given month is low outside of 1970s-era stagflation.
evidence updates: The 2025 tariff regime is the strongest evidence pushing toward stagflation: tariffs create simultaneous upward price pressure and downward employment pressure. This is a genuine supply shock mechanism that historically produces stagflationary outcomes. This pushes the probability UP significantly from a baseline of maybe 5-8% to around 18-22%. Counterbalancing: labor market resilience, potential tariff negotiations/rollbacks, and the relatively short 8-month window push DOWN somewhat.
combination method: The question requires BOTH conditions simultaneously. Using the joint probability framework with positive correlation (tariff shock affects both variables in the 'right' direction for stagflation). The weighted average of sub-questions gives 0.333, but the actual resolution probability is the joint probability, best estimated at ~0.20.
final: I estimate a 20% probability of stagflation (U3>=5% AND CPI>=3.5%) in December 2026. The tariff shock provides a credible mechanism, but the thresholds are high enough and the timeframe short enough that it remains a minority outcome. The most likely scenario is that one condition is met but not both - either inflation stays elevated but unemployment doesn't quite reach 5%, or unemployment rises but inflation moderates due to demand weakness.
ensemble: {'ensemble_count': 3, 'perspectives': {'base_rate': {'p_yes': 0.2, 'confidence': 0.35}, 'evidence_driven': {'p_yes': 0.2, 'confidence': 0.45}, 'contrarian': {'p_yes': 0.18, 'confidence': 0.35}}, 'spread': 0.02, 'individual_p_yes': {'base_rate': 0.2, 'evidence_driven': 0.2, 'contrarian': 0.18}}
5. Devil's Advocate Sonnet · legacy v2 Market price revealed
Math Error Asymmetric Evidence Missing Info
Challenges
  1. The forecaster states that the joint probability is 'below the simple product of independent probabilities (0.30 * 0.40 = 0.12) because the conditions are positively correlated,' but then gives 0.18 which is ABOVE 0.12, not below. This is a direct mathematical/logical contradiction. The forecaster correctly identifies positive correlation should push the joint probability above the independent product, but then incorrectly describes the direction while getting the actual number right. This undermines confidence in the reasoning process.
  2. The unemployment sub-question may underweight the severity of the tariff shock. The forecaster notes tariffs on China and potentially broad tariffs, but the 2025 tariff regime includes historically unprecedented tariff levels (145% on China, 10%+ baseline on most countries). The comparison to 2008 recession speed of unemployment rise may actually be optimistic - a sudden, massive trade disruption could produce faster labor market deterioration than a financial crisis, particularly in import-dependent sectors and retail. The 30% estimate for unemployment reaching 5% may be too low.
  3. The inflation sub-question at 40% seems reasonable but may underweight the stickiness of tariff-driven inflation. If tariffs of 100%+ on Chinese goods persist, the pass-through to consumer prices is likely more substantial and longer-lasting than the forecaster implies. The 'one-time' characterization of tariff inflation understates that ongoing tariffs create a persistently higher price level that maintains elevated 12-month comparisons throughout the year.
  4. The 'evidence_updates' section claims to have updated from a baseline but the 'Evidence Used' section shows '0 UP, 0 DOWN, 0 NEUTRAL' - suggesting no formal evidence was actually tracked or incorporated, despite the reasoning referencing tariff policies as key evidence. This disconnect raises questions about the rigor of the evidence integration.
  5. The forecaster's contrarian perspective (0.18) is barely different from the other perspectives (0.20, 0.20), suggesting the ensemble isn't genuinely stress-testing the forecast from different angles. A true contrarian might note that tariff escalation has been more extreme than initially expected, or that financial conditions tightening could accelerate the unemployment trajectory.
  6. The timeframe assessment may be slightly off. The forecaster says '8 months' but from April 2026, December 2026 is approximately 8 months - however, tariffs have already been in effect for potentially a year by then. The cumulative economic damage from sustained high tariffs over 12+ months could be significantly greater than implied by the forecaster's framing of this as a relatively short window.
Suggested adjustment: +4pp
The mathematical contradiction in describing correlation direction (saying joint is 'below' product while giving a number above it) reveals some confusion in the probability reasoning. More importantly, the unemployment probability may be underweighted given the unprecedented scale of tariffs (145% on China), and the inflation stickiness from persistent tariffs is likely underestimated. Both sub-probabilities could reasonably be ~5 percentage points higher, which with positive correlation would push the joint probability up by roughly 3-5 percentage points. Adjusting from 0.193 to approximately 0.23.
Market comparison: Forecaster: 19.3%, Market: 28.0%. The 8.7% divergence is notable. Some of this may be justified by the forecaster's careful analysis, but the reasoning errors identified (particularly underweighting tariff severity on both unemployment and inflation channels, and the math contradiction) suggest the true probability is somewhat higher than 19.3%. The market may be incorporating more recent developments about tariff persistence and economic deterioration that the forecaster's framework doesn't fully capture. However, prediction markets on complex macroeconomic outcomes can also overweight dramatic scenarios, so the full gap isn't necessarily a reasoning flaw.
6. Aggregator Opus · final calibrated forecast
25% (40% confidence)
My independent estimate of 19.3% was based on joint probability of unemployment ≥5% and CPI ≥3.5% in Dec 2026, starting from U3~4.2% and CPI~3.0%. I ACCEPT Challenge 1 (math description error) as undermining reasoning confidence. I PARTIALLY ACCEPT Challenges 2 and 3: the unprecedented tariff levels (145% on China, broad 10%+ baseline) are more severe than typical trade disruptions, and with tariffs in effect for 12+ months by Dec 2026, cumulative labor market damage and persistent price-level effects are likely underweighted in my original sub-probabilities. I'd revise unemployment to ~35% and inflation to ~45%, yielding a joint probability with positive correlation around 22-25%. I ACCEPT Challenge 6 that the cumulative effect of sustained tariffs matters more than the remaining window. The market at 28% is reasonably close to my revised estimate; the remaining ~3pp gap likely reflects the market pricing in tail scenarios of tariff escalation or financial stress that I find somewhat less probable but cannot dismiss. I settle at 0.25, splitting the difference between my revised analytical estimate and the market signal.