The European Central Bank raises its deposit facility rate at its next policy meeting.

Question

Six frontier AI models put this at 20% by 18 Dec 2026. Full reasoning from every model.

WillHappen.ai · Accepted Answer

20% — the median of 6 frontier models, resolving by 2026-12-18.

Answer

Gemini (Google): 88% — Lagarde's Governing Council rarely halts a tightening phase immediately after lifting rates on revised inflation forecasts. ECB guidance historically pre-commits to sequential moves when inflation revisions prompt a rate rise to 2.50%. Halting would require a severe unexpected financial shock before the next scheduled monetary policy decision. A sharp collapse in core CPI prints or systemic banking contagion within the Eurozone would immediately flip this view.

Answer

Claude (Anthropic): 8% — ECB has held rates steady through 2025-26 with cutting bias fading into a hold, not a hike signal. Inflation has been near target and ECB guidance emphasizes data-dependence with no explicit tightening signal as of late 2025. Base rate for a hike at any single meeting in a hold/cut cycle is low, typically under 10% absent inflation surprise. A sharp upside inflation surprise or wage/energy shock before the next meeting would be needed to flip this to a hike.

Answer

GPT (OpenAI): 18% — It turns on whether inflation or wage data force a reversal from the ECB’s likely easing/hold posture by the next meeting. The Governing Council alone decides, and its next scheduled monetary-policy meeting is likely 29 October 2026. After inflation-driven tightening cycles, a further hike following a 2.50% rate is uncommon unless forecasts show a renewed sustained overshoot. A sharp energy-price shock or materially higher core inflation and wage projections would most raise the odds of a hike.

Answer

Grok (xAI): 28% — Whether post-hike data force another 25bp move at the next GC meeting (late Oct). Governing Council must vote a further hike after just setting DF at 2.50%; only 6 weeks of HICP/wage prints remain. Consecutive-hike base rate outside 2022-23 is low once rates reach 2.5%; revised forecasts already priced the upside. A 3%+ flash HICP or wage surprise would reverse this; otherwise they pause.

Answer

DeepSeek (DeepSeek): 22% — The ECB has already cut to 2.50% and is in an easing cycle, so a hike at the next meeting would require a sharp inflation reversal. The ECB cut the deposit rate to 2.50% in 2025 and signalled a pause, not a pivot to tightening, with inflation near target. A hike would require the Governing Council to reverse course at its October 2026 meeting, which no current guidance or market pricing supports. Base rate for a G10 central bank hiking immediately after cutting to neutral is very low, and this case sits below it given anchored inflation expectations.

Answer

Qwen (Alibaba): 12% — ECB is in easing mode, not hiking; a deposit rate hike by Dec 2026 would require a sharp inflation re-acceleration. The ECB cut rates through 2024-2025 as inflation fell toward target; the deposit rate at 2.50% is already above neutral estimates. A hike requires the Governing Council to reverse its easing bias, which historically only happens after multiple meetings of hawkish signaling. Only a supply shock (energy spike, tariff pass-through) strong enough to push forecasts above 3% would flip the consensus; base rate of a single-meeting reversal is low.

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