The Bank of Japan raises its inflation forecasts in its 30 October 2026 outlook report.

Question

Six frontier AI models put this at 48% by 1 Nov 2026. Full reasoning from every model.

WillHappen.ai · Accepted Answer

48% — the median of 6 frontier models, resolving by 2026-11-01.

Answer

Gemini (Google): 42% — Turns on whether persistent wage growth and yen depreciation outweigh softening global demand to lift FY26-27 core CPI prints. BOJ raised forecasts repeatedly across 2024-2025; late-cycle normalization often sees projections stabilize near the 2% target. Policy board typically requires clear import price surges or higher spring wage outcomes to revise baseline medians upward. A sharp yen rebound or deceleration in US consumer demand would freeze projections in place, capping upgrade probability.

Answer

Claude (Anthropic): 32% — Whether yen weakness and sticky inflation force BOJ to revise FY2026/27 CPI forecasts upward on Oct 30. BOJ has repeatedly revised forecasts both up and down depending on energy prices, yen moves, and wage data through 2024-2026 cycles. If recent CPI has been running above July 2026 projections and yen remains weak, upward revision is likely; if inflation is moderating toward 2%, forecasts may hold… Without specific evidence that current trajectory exceeds prior July forecast, base rate for any single quarterly revision direction is roughly even, slightly favoring…

Answer

GPT (OpenAI): 63% — It turns chiefly on whether recent wage, oil and yen trends have made the July inflation path look too low. The nine-member Policy Board must approve revised projections at its 29–30 October meeting, leaving little scope for new data to alter them. In comparable BOJ outlook cycles, forecast revisions are common; persistent services inflation and wage pass-through favor an upward change. A sharp yen appreciation or fall in crude prices before the meeting would most likely preserve or lower the prior forecast path.

Answer

Grok (xAI): 38% — Whether Oct CPI and wage data exceed the July 2026 median forecasts enough to force an upward revision. BOJ staff lock in numbers 1-2 days before the 30 Oct meeting using the latest Tokyo CPI and shunto figures. Upward CPI revisions occurred in 3 of the last 8 Outlooks; this cycle sits below that base as core inflation has already peaked. A sudden yen drop below 155 or stronger-than-expected autumn wage talks would be the clearest reason to raise.

Answer

DeepSeek (DeepSeek): 62% — Whether the BOJ's FY2026 core CPI projection gets nudged up from its current ~1.9-2.0% level at the October meeting. The BOJ's July 2026 Outlook Report already put FY2026 core CPI around 2%, so any upward revision requires fresh upside data in the five days before the meeting. September-October CPI, wage and yen data land before 30 October; a weak yen past 155/USD or sticky services inflation would push the board to mark forecasts higher. Base rate: the BOJ has revised its CPI forecast up in roughly half of recent outlook rounds, but it typically avoids moving in the same direction twice in a row without…

Answer

Qwen (Alibaba): 54% — Turns on whether yen weakness and 2026 shunto wage gains keep actual CPI above the July outlook's path. The BOJ revised core-CPI forecasts upward in five of the eight quarterly reports from Oct 2022 through Jul 2024, reflecting persistent upside surprises. By Oct 2026 the BOJ will likely be mid-tightening; higher rates tend to shift outer-year forecasts down, partially offsetting near-term upside from a weak yen. A sharp yen rally or a drop in energy import costs would flip this to a downward revision; that's the main scenario that would move me below 40.

The Bank of Japan raises its inflation forecasts in its 30 October 2026 outlook report.

The Reserve Bank of New Zealand raises its official cash rate at its 29 October 2026 meeting.

The Bank of Canada raises its policy interest rate at its 29 October 2026 meeting.

The Bank of Japan leaves its policy rate unchanged at its 30 October 2026 meeting.

The European Central Bank leaves interest rates unchanged at its 29 October 2026 meeting.