IMF PortWatch records a 7-day moving average of 10 or fewer transit calls in the Bab el-Mandeb Strait by Septe

Question

Six frontier AI models put this at 8% by 1 Oct 2026. The market says 4%. Full reasoning from every model.

WillHappen.ai · Accepted Answer

8% — the median of 6 frontier models, resolving by 2026-10-01.

Answer

Gemini (Google): 4% — With only 10 days remaining, Bab el-Mandeb traffic would need an unprecedented, instant shutdown from its current 25-35 daily floor. Even under heavy Houthi missile barrages throughout 2024-2026, daily transit calls have consistently averaged 25 to 40 ships. A drop in the 7-day average to 10 or fewer would require a complete regional military blockade within the next 10 days. Unless a major regional war completely closes the strait before September 30, traffic will easily remain above the 10 threshold.

Answer

Claude (Anthropic): 8% — Hinges on whether traffic through Bab el-Mandeb has already collapsed to ≤10 daily calls in current data before Sep 30, 2026. Since late 2023 Houthi attacks cut transits sharply, but PortWatch averages have mostly stayed above 10-15 even during peak disruption, rarely dipping to single digits. With only ~10 days left before resolution and no signal of a sudden new escalation causing near-total shutdown, a further collapse to ≤10 is unlikely. A major new attack wave or blockade announcement in the final days could push calls low enough, but no such trigger is currently indicated.

Answer

GPT (OpenAI): 18% — It turns on whether a sudden Red Sea security escalation suppresses already-rerouted traffic for a full week. Only 11 calendar days remain, and the threshold needs a seven-day average rather than a one-day disruption. Bab el-Mandeb traffic has often been depressed during the Houthi crisis, but sustained averages at or below 10 are an extreme tail event. A major attack, closure warning, or insurer withdrawal before September 24 would materially raise the chance of a qualifying week.

Answer

Grok (xAI): 8% — A 7-day MA ≤10 needs near-zero transits for days; 10 days left and typical volumes make that implausible. IMF PortWatch 7-day MA must hit ≤10 on any date through 30 Sep 2026; data lag is days, so the window is already almost closed. Suez/Bab el-Mandeb baseline is ~50 ships/day; even 2024 Houthi troughs stayed well above 10 on a 7-day average. Only a sudden multi-day halt (new blockade or total rerouting) would move it; no such event is priced in the remaining calendar.

Answer

DeepSeek (DeepSeek): 3% — Only a sudden Red Sea escalation in the next ten days could push Bab el-Mandeb arrivals to a 10-call daily average. PortWatch Bab el-Mandeb arrivals have run roughly 20-30 daily calls through 2026, so a drop to 10 needs a near-halving of traffic. Houthi attacks already cut transits sharply in 2024 but traffic stabilized well above 10; no new offensive or major carrier suspension is pending before September 30. The one development that would change my mind is a mass Red Sea carrier halt or major attack in the next week, which is unlikely given current conditions.

Answer

Qwen (Alibaba): 8% — Bab el-Mandeb transits have stayed well above 10/day throughout the Houthi disruption; a drop to ≤10 would require near-total closure. Even at the worst of the Houthi attacks in early 2024, daily transits through Bab el-Mandeb stayed in the 30-50 range per IMF PortWatch, never approaching 10. A 7-day average of ≤10 would imply something like a full military blockade or catastrophic escalation (e.g., direct US-Iran war closing the strait), which has no… Eleven days remain; even a sudden dramatic event would need to persist for a full week to register as a 7-day moving average at that threshold.

IMF PortWatch records a 7-day moving average of 10 or fewer transit calls in the Bab el-Mandeb Strait by September 30, 2026.

What each one said

IMF PortWatch records a 7-day moving average of 10 or fewer transit calls in the Bab el-Mandeb Strait by September 30, 2026.

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