The European Central Bank raises interest rates at its October 30, 2026 meeting.

Question

Six frontier AI models put this at 30% by 27 Dec 2026. Full reasoning from every model.

WillHappen.ai · Accepted Answer

30% — the median of 6 frontier models, resolving by 2026-12-27.

Answer

Gemini (Google): 42% — Turns on whether Eurostat's flash October HICP shows oil-driven second-round effects severe enough to force consecutive moves. ECB historically favors back-to-back hikes primarily during early tightening phases, pausing frequently when macro data softens. The Governing Council has only six weeks between meetings and lacks new staff macroeconomic projections until December. A sustained Brent spike past $95 before October 30 would rapidly force consensus toward another 25 bp hike.

Answer

Claude (Anthropic): 22% — Depends on whether inflation data through October forces the ECB to extend its tightening cycle immediately. Central banks typically pause after a hike to assess transmission effects, so back-to-back hikes are the less common pattern. The Sept 10 hike already addressed Middle East inflation pressures; another hike just 7 weeks later would require a clear data shock. Watch upcoming Eurozone HICP prints and oil price trajectory for signs inflation is accelerating rather than stabilizing.

Answer

GPT (OpenAI): 37% — It hinges on whether September’s oil-driven inflation shock persists long enough to outweigh weak euro-area growth. The Governing Council must see October staff data justify another hike only seven weeks after raising the deposit rate to 2.50%. Back-to-back hikes occur in sustained inflation cycles, but a single shock-driven move is often followed by a pause to assess transmission. A broad energy-price reversal or soft October inflation print would sharply lower the case; further supply disruption would raise it.

Answer

Grok (xAI): 22% — Whether the Middle East shock still looks persistent enough by the Oct 16-17 data cutoff for another 25bp move. ECB just delivered a 25bp hike on 10 Sep; Governing Council typically waits at least one full meeting to judge incoming HICP and oil data. Consecutive-hike base rate is high only inside a declared tightening cycle (2022-23); a one-off geopolitical shock sits well below that. A further 10%+ oil spike or Oct flash inflation reprint above 2.8% would be the clearest reason to reverse the pause bias.

Answer

DeepSeek (DeepSeek): 22% — Whether the September hike was a one-off insurance move or the start of a genuine tightening cycle hinges on Q3 core inflation and the Fed's path. Governing Council meets Oct 30 with only October flash HICP (Oct 30 morning) and September core data in hand; a single month rarely justifies a follow-up hike. The Sept 10 hike to 2.50% was framed as pre-emptive against Middle East energy pass-through, and ECB staff projections still show inflation converging near 2% by 2027. Base rate: the ECB has rarely hiked at consecutive meetings since 2023; the 2023 sequence was driven by 5%+ core, far above today's likely ~2.3-2.6% core.

Answer

Qwen (Alibaba): 62% — Hikes rarely come in consecutive meetings without a clear shock, but the cited Middle East inflation pressure is an active driver. The ECB hiked to 2.50% on Sept 10 citing Middle East inflation; back-to-back hikes require either worsening data or a new shock between now and Oct 30. Historically the ECB has done consecutive hikes in tightening cycles (2022-23 saw several), but usually with 6-week gaps and clear data deterioration between meetings. If Middle East energy prices spike further or September CPI prints hot, probability rises sharply; if inflation data stabilizes, the ECB will likely pause and reassess.

The European Central Bank raises interest rates at its October 30, 2026 meeting.

The Bank of Japan raises interest rates at its next scheduled policy decision.

The Bank of England raises its policy rate at its next scheduled decision.

The Federal Reserve raises the federal funds rate at its October 28-29, 2026 meeting.

The Federal Reserve increases interest rates by 25 basis points at its December 2026 meeting.