California's governor signs the frontier AI safety bill into law by midnight on September 30, 2026.

Question

Six frontier AI models put this at 62% by 18 Oct 2026. Full reasoning from every model.

WillHappen.ai · Accepted Answer

62% — the median of 6 frontier models, resolving by 2026-10-18.

Answer

Gemini (Google): 41% — Newsom balances Silicon Valley competitiveness against softened post-SB 1047 safety compromises. Newsom vetoed 2024's SB 1047 over rigid pre-deployment compute thresholds, setting a strict bar for any 2026 successor. While sponsors tailored this version to address past veto objections, intense tech lobby pressure still heavily favors a veto. A public endorsement from key frontier lab leaders or major economic concessions before Sept 30 would swing odds above 70%.

Answer

Claude (Anthropic): 68% — Turns on whether Newsom signs another frontier AI bill given his SB 1047 veto history and 2025 SB 53 signing precedent. Newsom vetoed SB 1047 in 2024 but signed the narrower SB 53 frontier AI transparency bill in 2025, showing openness to scaled-back versions. California governors sign roughly 85% of bills reaching their desk by the constitutional deadline, but AI safety bills face heavier industry lobbying. If this bill mirrors SB 53's lighter-touch approach it likely gets signed; if it resembles the more prescriptive SB 1047 it risks another veto.

Answer

GPT (OpenAI): 63% — The decisive factor is whether the governor sees a signing path that avoids alienating California’s AI industry. The legislature has acted; only the governor must decide before the September 30 constitutional deadline. Bills passed in California are often signed, but high-profile AI regulation faces unusually organized industry opposition. A public commitment from major labs to comply, or a narrowed implementation plan, would materially raise the odds.

Answer

Grok (xAI): 42% — Newsom’s 2024 SB 1047 veto logic vs. any 2026 revisions. He must act by 30 Sep; unsigned bills die, so a decision is forced in 12 days. Base rate ~85% of CA bills are signed, but Newsom vetoed the last frontier-AI bill and similar high-profile tech measures sit well below that. Only a publicly announced industry deal or explicit gubernatorial support would move the odds above 50.

Answer

DeepSeek (DeepSeek): 62% — Whether Newsom signs SB 53-style frontier AI rules or bows to tech-industry pressure before the September 30 deadline. Newsom has until Sept 30 to act; legislature passed it in late August, so the only actor is the governor and the clock is short. Precedent cuts both ways: he signed SB 1047-adjacent transparency bills in 2024 but vetoed the tougher SB 1047, showing real ambivalence. Industry lobbying and federal preemption talk raise veto odds, but a passed bill with narrowed scope sits above the base rate for gubernatorial signatures.

Answer

Qwen (Alibaba): 62% — Newsom's calculus hinges on whether the bill's final text is weaker than SB 1047, which he vetoed in 2024. Newsom vetoed SB 1047 in Sept 2024 citing competitive concerns; if this bill is materially similar, he'd likely veto again. The legislature passed it in late August, giving Newsom ~30 days; California governors sign ~90% of bills that reach them. Industry lobbying (OpenAI, Meta) pushed hard against SB 1047 and would do so again; a veto would be the base rate unless the bill is substantially watered down.

California's governor signs the frontier AI safety bill into law by midnight on September 30, 2026.

California formally proposes regulations regarding an AI kill switch pursuant to Governor Newsom's executive order before mid-2027.

Donald Trump meets with AI executives to discuss government oversight before October 2026.

The U.S. Congress enacts a mandatory national AI safety framework before the end of 2026.

The U.S. Congress advances AI regulation legislation during the post-election lame-duck session in 2026.