Scan: Cuban regime falls in 2026?

date	predicted	market price	confidence
2026-08-26	11%	13%	72%
2026-08-17	10%	12%	68%

1. Planner Fable 5.1 · Fermi decomposition + tool plan

Tools chosen: polymarket_direct kalshi_related polymarket_related claude_news article_search gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

What is the current Polymarket YES price and volume, and how has it trended over the past 90 days?
What is the historical annual base rate of entrenched one-party communist regimes (Cuba, North Korea, Vietnam, Laos, China) losing de facto control in any given year since 1991?
Is the Cuban economic/humanitarian crisis (blackouts, food shortages, emigration, inflation) in 2025-2026 severe enough to trigger mass protests exceeding the July 2021 scale, and are any such protests currently occurring?
Is the Trump administration pursuing policies (sanctions, blockade, military pressure, explicit regime-change goals) that materially raise the probability of PCC collapse in 2026?
Are there signs of fractures within the PCC elite or Cuban military (FAR/MININT), such as defections, purges, or succession disputes around Díaz-Canel and Raúl Castro?
Does Kalshi or another Polymarket market price the same or a correlated outcome (e.g., Díaz-Canel out, US-Cuba conflict), and does it disagree with this market?

Planner reasoning

This is a low-base-rate regime-collapse question on Polymarket; the market price is the primary anchor and should be compared against Kalshi's equivalent market if one exists. Key drivers are the current state of Cuba's economic/humanitarian crisis, protest activity, US policy pressure (Trump administration sanctions, any military/regime-change rhetoric), elite/military cohesion, and the historical base rate of one-party communist regimes collapsing within a given year. No specific resolution URL is named, so resolution_source is skipped in favor of news tools.

2. Research Parallel tool calls

tool	status	time	items	summary
polymarket_direct	OK	0.6s	1	## This Market's Polymarket Data Cuban regime falls in 2026? - Current price (probability): 12.50% - 7-day price change: -0.50% - 30-day price change: -1.00% - Total volume: $1,725,147 (USD notional) - Price range: 9.50% - 20.50% - Data points: 90 days
kalshi_related	OK	5.3s	0	0 related markets / summaries. keyword 'Cuba': no matches \| keyword 'Cuban regime': no matches \| keyword 'Diaz-Canel': no matches
polymarket_related	OK	0.5s	12	Polymarket search over 3 keyword(s), kept 12 matches. keyword 'Cuba': 5 markets \| keyword 'Cuban': 5 markets \| keyword 'Diaz-Canel': 2 markets
claude_news	OK	28.4s	0	## Key Findings: Cuba Regime Stability in 2026 Economic/Humanitarian Crisis - Cuba's grid entered near-total collapse in 2026, with the National Electric System generating <a target="_blank" href="https://www.electricchoice.com/blog/cuba-electricity-crisis/">"roughly 1,278 MW at evening peak ag
article_search	OK	0.8s	15	Fetched 15 unique articles across 3 queries (lookback=60d). 'Cuba protests blackouts economic crisis 2026': 10 articles \| 'Trump administration Cuba policy sanctions regime change': 10 articles \| 'Cuban Communist Party Diaz-Canel government stability': 10 articles
gdelt_news	OK	188.0s	10	GDELT: 10 articles across 3 queries (lookback=30d). 'Cuba regime collapse': 10 hits \| 'Cuba protests Diaz-Canel': error GDELT rate-limited after retries (429) \| 'Cuba military unrest': error GDELT rate-limited after retries (429)
wikipedia	OK	0.3s	4	Fetched 4 Wikipedia entries (0 missing pages).
code_execution	OK	32.1s	0	## Base Rate Findings: Cuban Regime Collapse in a Given Year Stable-era reference class (Cuba, N. Korea, China, Vietnam, Laos, 1991–2025): - 175 regime-years observed, 0 collapses — a genuinely hard case for frequentist estimation. - Laplace/add-one smoothed rate: ≈0.57% per year - Rule

3. Evidence Brief Sonnet 5 · 7700 chars

# Current state The PCC continues to exercise de facto governing control over Cuba as of Sept 2026 despite an unprecedented energy/economic collapse, record protest activity, and a US "maximum pressure" campaign (sanctions, oil blockade, indictment of Raúl Castro). No transfer of power, multi-party elections, or PCC dissolution has occurred; Díaz-Canel remains in office. Kalshi/Polymarket price this as a low-probability tail event, not a base case. # Timeline of key events - 2025-12: US seizes Venezuela-bound oil tankers, declares blockade on Venezuelan oil to Cuba after US intervention in Venezuela (confirmed, Wikipedia/CNN). - 2026-01: Cuba energy crisis worsens sharply after Venezuelan oil cutoff (confirmed, CNN). - 2026-03-13: Protesters storm/burn furniture at PCC municipal HQ in Morón (confirmed, Al Jazeera/Havana Times). - 2026-03: Trump: "I do believe I'll be having the honor of taking Cuba"; Rubio: "They have to get new people in charge" (reported, CS Monitor). - 2026-03/05/07: Multiple total nationwide blackouts (6 total by August) (confirmed, CNN, Al Jazeera). - 2026-05: US federal prosecutors indict Raúl Castro for murder as pressure tactic (confirmed, CNBC). - 2026-06: Sharp increase in protests; Cubalex logs 766 protests in H1 2026 (reported, IWPR). - 2026-08-21: Reports Cuba recorded 2x more deaths than births in 2025; new round of US sanctions on Cuban elites/state bank (reported, Breitbart/Al Jazeera). - 2026-09-01: Reports of Raúl Castro's critical health surface (rumored, NBC Miami). - 2026-09-06: Raúl Castro appears publicly at military event after hospitalization, seemingly rebutting death/incapacity rumors (confirmed, CBS Miami). - 2026-09: Rubio reportedly in contact with Raúl Castro's grandson, suggesting US exploring intra-regime succession rather than full collapse (reported, Foreign Affairs/CFR). # Event Will the Communist Party of Cuba (PCC) lose de facto governing control of Cuba by Dec 31, 2026? # Outcomes to forecast - Yes (PCC loses de facto control) - No (PCC retains control) # Kalshi market anchor This is a Polymarket-mirrored ticker; no separate Kalshi listing found (kalshi_related: 0 matches). Polymarket YES price: **12.5%**, down from a 90-day high of 20.5% (low 9.5%); 7d trend -0.5pp, 30d trend -1pp. Volume $1.72M over 90 days — moderately liquid, gently declining probability despite worsening crisis headlines, suggesting market views crisis as chronic/managed rather than terminal. # Resolution source No dedicated resolution_source tool output; brief relies on "consensus of credible reporting" per rules. Current reporting consensus (CNN, Al Jazeera, CFR, Foreign Affairs) confirms PCC still administers the majority of Cuba's population; resolving condition (Yes) is NOT currently met. # Sub-question answers 1. **Polymarket trend** — 12.5% current, down 0.5-1pp over 7d/30d, range 9.5-20.5% over 90 days; volume $1.72M (Polymarket direct). 2. **Base rate** — Entrenched one-party regimes (Cuba, NK, China, Vietnam, Laos) show 0/175 regime-years of collapse since 1991 (~0.6-1.7% smoothed annual rate); 1989-91 systemic Eastern Bloc collapse wave hit ~4.5-5%/yr but required an external shock (Soviet collapse) Cuba currently lacks (code_execution). 3. **Crisis vs. 2021 scale** — Yes, severe: 6 nationwide blackouts by August 2026, oil blockade-driven grid near-collapse, 766 protests in H1 2026 with a June spike, and a PCC HQ burned in Morón (March). However, UK Parliament research explicitly states "none of the recent protests approached the scale of the July 2021 protests" (Commons Library, IWPR). 4. **Trump admin policy** — Explicit regime-change rhetoric and maximal pressure: oil blockade (via Venezuela seizure), expanding sanctions on Cuban elites/state bank, Raúl Castro murder indictment, and stated goal of removing Díaz-Canel by year-end (Al Jazeera, CS Monitor, CNBC). CFR frames this as "pre-conflict playbook" aimed at delegitimizing the regime for medium-term internal change, not direct invasion. 5. **PCC/military fractures** — No confirmed defections or purge; rumors of Raúl Castro's critical health (Sept 1) followed by a public appearance at a military event (Sept 6) suggest resilience/no immediate succession crisis, though Washington Times cites experts noting unprecedented latent multi-candidate succession risk once Raúl dies. Rubio reportedly in contact with Raúl's grandson — sign of possible engineered elite transition, not collapse. 6. **Correlated markets** — Polymarket "Díaz-Canel out by Dec 31" trades at 14.5% YES; "US strike on Cuba" 15.5%; "US invades Cuba" 6.5%; "US-Cuba economic deal" 11.5%. All cluster in the 5-15% range, consistent with (and slightly lower than) this market's 12.5%, indicating cross-market agreement that leadership change is more likely than full regime collapse, and that both are low-probability in 2026. # Key facts (high-confidence, factual) 1. [Wikipedia] PCC constitutionally the "leading force of society and state"; Díaz-Canel is First Secretary since April 2021. 2. [CNN/Al Jazeera] Cuba suffered 6+ total nationwide blackouts in 2026 amid a US oil blockade tied to the Venezuela intervention. 3. [IWPR/Cubalex] 766 protests recorded in H1 2026, more frequent but smaller-scale than July 2021. 4. [CNBC] US indicted Raúl Castro for murder (May 2026) as a pressure tactic. 5. [CFR/Foreign Affairs] Expert consensus: internal collapse "highly unlikely" short-term; more probable outcome is elite reshuffling/military-led transition. # Cross-market signals - Kalshi related: none found. - Polymarket correlated markets: Díaz-Canel out 14.5%, US strike on Cuba 15.5%, US invades Cuba 6.5% — all low-probability, mutually reinforcing this market's ~12.5%. - No sportsbook data applicable. # Analyst opinions and speculation - CFR (Will Freeman): "tightly controlled system makes internal collapse... highly unlikely"; expects military-led reshuffle instead. - Foreign Affairs: "too many inside government are loyal... opposition is divided and lacks a plan." - Washington Times: unprecedented multi-faction succession risk once Raúl Castro dies/exits. - CNBC/CFR: Trump strategy resembles "pre-conflict playbook" for delegitimization, not invasion. # Directional lean per outcome - **Yes**: Supported by unprecedented economic collapse, blackout frequency, record protest counts, aggressive US blockade/sanctions/indictments, and explicit US regime-change rhetoric. Opposed by base rates (0/175 historical collapse-years for entrenched regimes), expert consensus of regime resilience, lack of elite fracture/defections, and Raúl Castro's public reappearance countering succession-crisis narrative. - **No**: Strongly favored — cross-market pricing (9.5-20.5% range, settling ~12.5%), historical base rates (~1-6%), and analyst consensus all point to continuity, with leadership change (Díaz-Canel out) more plausible than full PCC loss of control. # Gaps / unknowns - No confirmed elite defections or military mutiny signals. - Raúl Castro's true health status uncertain (rumor vs. public appearance). - Unclear how a Díaz-Canel removal event (if it occurs) would be scored — likely No under rules unless PCC also loses control. - No Kalshi-specific price found; anchor relies solely on Polymarket data for the same ticker. # Calibration anchors - Polymarket YES price (anchor): 12.5%, trending slightly down over 30 days. - Historical base rate for entrenched one-party regime collapse: ~1-6%/yr, point estimate ~2-4% even under elevated crisis conditions (code_execution synthesis). - Precedent: July 2021 protests (largest since 1994) did not topple PCC; 2026 unrest, while broader, remains sub-2021 scale per Commons Library.

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

claude-fable-5-1

62% conf

Yes	7%
No	93%

As of September 2026 the PCC still governs Cuba with Díaz-Canel in office, no confirmed elite defections or military fractures, and Raúl Castro's public reappearance on Sept 6 undercutting succession-crisis narratives. The Polymarket anchor is 12.5% and drifting down despite worsening blackout/protest headlines, while correlated markets (US invasion 6.5%, Díaz-Canel out 14.5%) suggest leadership reshuffling is seen as more likely than full loss of PCC control—and a reshuffle would likely still resolve No. Base rates for entrenched one-party regimes (~1-6%/yr, no collapses since 1991) and expert consensus (CFR, Foreign Affairs) that internal collapse is 'highly unlikely' in the short term argue for shading below the market, which typically overprices dramatic tail events with only ~3.5 months remaining. I land at ~7% Yes, modestly below the 12.5% anchor, retaining some weight for a US strike/engineered transition or sudden Castro death triggering cascade.

claude-fable-5-1

62% conf

Yes	8%
No	92%

As of Sept 2026 the PCC retains de facto control with no confirmed elite defections, military fractures, or succession crisis (Raúl Castro reappeared publicly Sept 6), leaving only ~3.5 months for a collapse. Polymarket prices YES at 12.5% and drifting down despite worsening blackout/protest headlines; correlated markets (Díaz-Canel out 14.5%, US invasion 6.5%) agree that leadership reshuffling is likelier than full PCC loss of control, and even a Díaz-Canel removal would likely resolve No. Historical base rates for entrenched one-party regimes (~1-6%/yr, 0/175 regime-years since 1991) and CFR/Foreign Affairs consensus that internal collapse is 'highly unlikely' argue for shading slightly below the market anchor. The unprecedented US maximum-pressure campaign and regime-change rhetoric keep a meaningful tail, so I stay near but below the 12.5% anchor.

claude-fable-5-1

62% conf

Yes	8%
No	92%

Polymarket prices YES at 12.5% and drifting lower despite worsening headlines, while the resolving condition (PCC losing de facto control) is clearly unmet as of Sept 2026 with only ~3.5 months left. Base rates for entrenched one-party regimes (0/175 regime-years since 1991, ~1-6%/yr smoothed) and expert consensus (CFR, Foreign Affairs: internal collapse 'highly unlikely', more likely elite reshuffle) point strongly to continuity; Raúl Castro's public reappearance and the absence of any elite defections or military fractures remove the most plausible collapse trigger. Correlated markets (Díaz-Canel out 14.5%, invasion 6.5%) suggest even a leadership change—more likely than full PCC loss of control—would probably resolve No under the rules. I shade below the anchor because long-shot Polymarket YES prices are typically inflated by cheap-tail buyers, and the short remaining window compresses the real-world probability toward the base rate.

gpt-5.6-sol

74% conf

Yes	11%
No	89%

The 12.5% Polymarket YES price is the primary anchor, with its gentle decline indicating that traders view the worsening crisis as manageable rather than terminal. Six nationwide blackouts, 766 protests, and aggressive US pressure create a meaningful tail risk, but the protests remain smaller than those of July 2021 and there are no confirmed military defections or elite fractures. Historical base rates, Raúl Castro's public reappearance, and expert assessments favor PCC continuity or an intra-regime reshuffle rather than loss of de facto control. I therefore place YES slightly below the market anchor at 11%.

gpt-5.6-sol

76% conf

Yes	10%
No	90%

The 12.5% Polymarket YES price is the primary anchor, with its gentle decline indicating that traders view the crisis as severe but not terminal. Six nationwide blackouts, 766 first-half protests, and aggressive US pressure raise collapse risk, but the protests remain smaller than in July 2021 and no military mutiny or elite defection is confirmed. Historical persistence of entrenched one-party regimes and expert expectations of an elite or military-led reshuffle favor No, since replacing Díaz-Canel would not itself end PCC control. Raúl Castro's public reappearance and correlated markets pricing leadership change above outright regime collapse support moving modestly below the market anchor.

6. Final plain mean of 5 draws

9% (67% confidence)

Yes: 9% No: 91%

Mean of 5 draws (0.07, 0.08, 0.08, 0.11, 0.10). As of September 2026 the PCC still governs Cuba with Díaz-Canel in office, no confirmed elite defections or military fractures, and Raúl Castro's public reappearance on Sept 6 undercutting succession-crisis narratives. The Polymarket anchor is 12.5% and drifting down despite worsening blackout/protest headlines, while correlated markets (US invasion 6.5%, Díaz-Canel out 14.5%) suggest leadership reshuffling is seen as more likely than full loss of PCC control—and a reshuffle would likely still resolve No. Base rates for entrenched one-party regimes (~1-6%/yr, no collapses since 1991) and expert consensus (CFR, Foreign Affairs) that internal collapse is 'highly unlikely' in the short term argue for shading below the market, which typically overprices dramatic tail events with only ~3.5 months remaining. I land at ~7% Yes, modestly below the 12.5% anchor, retaining some weight for a US strike/engineered transition or sudden Castro death triggering cascade.

7. Entry Decision Fable 5.1 trader

Side

no

Position Size

$500

Contracts

568

Trader Confidence

67%

Trade rationale

Forecast 8.8% vs market 12.5% gives a -3.7% edge, just clearing the 3% threshold, and both sides sit below 50% so this is a with-the-favourite NO entry — the book's profitable species. The rationale does point at something concrete rather than pure caution: Raúl Castro's Sept 6 public reappearance undercuts succession-crisis narratives, and the correlated-market structure (Díaz-Canel out 14.5% vs regime falls 12.5%) implies the market is pricing full PCC collapse nearly as likely as a mere leadership reshuffle, which is internally inconsistent given a reshuffle resolves NO. Ensemble is tight (7-11%, 4pp spread) with all five draws below market, and forecaster confidence of 0.67 is unremarkable and not driving the decision. Liquidity is excellent ($1.7M volume, 1c spread), and there is no Cuba/Latin America regime exposure in the current book.

Allocation logic

Sized at the $500 floor because the edge is marginal (3.7%) on a NO at 87.5c where payoff per dollar is small and tail risk (US strike, Castro death cascade) is fat over 103 days; a same-side edge with only modest new information warrants the low end of the $500-$800 band.

Entry price: $0.88

Current: $0.91

Status: OPEN

P&L: $14.20

Pipeline Timing

Total pipeline time: 257.3s

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