The U.S. EPA finalizes its proposed repeal of power-plant greenhouse-gas regulations following the public comment period ending November 2, 2026.
The EPA proposed rescinding greenhouse-gas requirements for power plants, with public comments open through November 2, 2026. A final rule would solidify the regulatory rollback.
Across 6 frontier models answering independently, the panel leans no: the median is 48%.
They do not agree: DeepSeek puts it at 78% and Claude at 25%, 53 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Nothing is settled until 19 Mar 2027, when the outcome is checked against sources and every number above gets a permanent score.
What each one said
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DeepSeekDeepSeek
Whether EPA can clear OMB review and sign the final repeal within about four months of the comment deadline.
- EPA has already proposed the repeal, so the remaining step is a final rule signature, which historically follows comment close by 60-120 days.
- The comment period ends November 2, 2026, leaving roughly 137 days to the March 19, 2027 deadline, enough for OMB review and publication.
- The main risk is litigation-driven delay or a procedural re-proposal, but EPA under this administration has prioritized speed on deregulatory actions.
78% -
QwenAlibaba
EPA has ~4.5 months post-comment to finalize; the bottleneck is OMB review and legal defensibility, not political will.
- EPA typically needs 3–6 months after comment close to process responses and clear OIRA review; Nov 2 close to Mar 19 is tight but feasible.
- The Trump EPA has moved aggressively on rollbacks (e.g., methane rules), but court reversals make them cautious on final language, adding delay.
- A development that would raise this: if EPA signals a shortened comment-review window or pre-clears the rule with OMB before Nov 2.
62% -
GPTOpenAI
It turns on whether EPA prioritizes a legally durable final rule within 137 days after comments close.
- EPA must review comments, complete a response and sign a final rule before March 19; publication could follow quickly.
- Major EPA deregulatory rules often take many months after comments, making a four-and-a-half-month window tight but feasible.
- A court stay, a reopened record, or a decision to pair repeal with replacement standards would materially lower the chance.
57% -
GrokxAI
Whether EPA can finish comment review, OIRA, and publication in the 4.5 months after Nov 2.
- EPA must process comments, draft the final, clear OIRA (~90 days), and publish by 19 Mar 2027.
- Controversial GHG repeals historically take 6–18 months post-comment; 4.5 months sits well below that base rate.
- A White House directive to rush it before any 2027 personnel or litigation delay would most raise the odds.
38% -
GeminiGoogle
The timeline of under five months between comment closure and publication is too compressed for major Clean Air Act rulemakings.
- EPA typically takes 9 to 18 months post-comment period to review hundreds of thousands of submissions and draft a defensible final rule.
- Interagency review at OMB's OIRA alone averages 60 to 90 days, leaving nearly zero margin between November 2026 and mid-March 2027.
- A rush would risk immediate vacatur under the APA, though high political priority could drive an unprecedented fast-track finalization.
27% -
ClaudeAnthropic
Whether EPA can process comments and finalize the repeal within roughly 4.5 months of comment close by March 19, 2027.
- Comment period closes Nov 2, 2026, leaving under 5 months for EPA to review, respond, and finalize—tight but not impossible for a deregulatory rule with political…
- Major deregulatory rules under this administration have often moved fast but also faced internal delays, litigation prep, and OMB review adding months.
- Legal challenges or a partial government shutdown/administrative bottleneck could push finalization past March 2027, and EPA has history of slipping self-imposed…
25%
6 of 6 models answered · 53 points between the highest and lowest. None was shown the market price.
Question sourced from a news sweep on 20 Sept 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.