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

Question

Six frontier AI models put this at 28% by 25 Dec 2026. Full reasoning from every model.

WillHappen.ai · Accepted Answer

28% — the median of 6 frontier models, resolving by 2026-12-25.

Answer

Gemini (Google): 42% — The decision turns on euro-area October flash inflation topping projections enough to force an immediate back-to-back hike. The ECB lifted rates just two weeks ago, but Governing Council precedent leans heavily toward pause-and-assess at consecutive sessions. A sharp energy shock or upside wage print before the late-October meeting is required to overcome internal dovish resistance to 2.75%. Core inflation holding below 2.3% in incoming Eurostat releases would lock in an unchanged deposit rate until December.

Answer

Claude (Anthropic): 4% — ECB just hiked in September; another hike weeks later at the October meeting would be a sharp reversal of its gradualist pattern. ECB typically pauses after a hike to assess incoming inflation and growth data, especially with rates already restrictive. No indication in the setup of an inflation surge that would force back-to-back hikes within one quarter. A major upside inflation shock or wage/price spiral before the October meeting is the main thing that could change this.

Answer

GPT (OpenAI): 14% — It turns on whether post-hike inflation or wage data force a second consecutive tightening despite weak-growth risks. The Governing Council must vote for a hike at its next scheduled decision, likely 29 October, leaving little time for evidence to shift. Back-to-back ECB hikes are common in sustained inflation shocks, but a 2.50% rate after a September move implies policy is already restrictive. A sharp upside surprise in September–October HICP or negotiated wages would materially raise the chance of another increase.

Answer

Grok (xAI): 38% — Whether post-Sept data still show inflation sticky enough for another 25bp six weeks later. GC next meets ~29 Oct 2026; a hike requires a majority still seeing above-target persistence. Consecutive hikes occurred ~40% of meetings in the 2022-23 cycle, far less otherwise; recent restart puts this near that rate. A clear drop in core or energy prints before the meeting would most shift the odds down.

Answer

DeepSeek (DeepSeek): 18% — This turns on whether the ECB, having just hiked to 2.50% on 10 September, delivers a second consecutive hike at its late-October meeting. The Governing Council meets 29 October 2026; a back-to-back hike requires inflation still above target and no energy or growth shock in the interim. Base rate for consecutive hikes after a single move is low; the ECB typically pauses to assess transmission, and September's hike was itself a restart after a long hold. The single development that would most change my mind is a September flash HICP print (due early October) showing core inflation re-accelerating above 3%.

Answer

Qwen (Alibaba): 41% — Whether the ECB hikes again in October depends on whether September's move was framed as the last step or the start of a sequence. The ECB hiked to 2.50% on 10 Sep; the next meeting is likely 29 Oct 2026, giving only ~7 weeks for new data to shift the council's stance. Historically, the ECB rarely hikes at consecutive meetings when entering a late-cycle tightening phase; back-to-back hikes at this level are uncommon. A hawkish surprise in October CPI flash data (due ~31 Oct, too late) or a sharp EUR depreciation could push it up, but the base case is a pause to assess.

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

Euro-area headline annual inflation rises in the next official Eurostat flash estimate.

The Bank of England raises Bank Rate at its next scheduled MPC decision.

The Federal Reserve raises its benchmark interest rate at its next scheduled policy meeting.

The U.S. Consumer Price Index for September 2026 rises month-over-month when released on October 13, 2026.