The U.S. Supreme Court allows the Boulder climate lawsuit against Suncor and ExxonMobil to proceed in state court by June 2027.
Oral arguments were heard in October 2026 over whether local climate claims belong in state court. A decision permitting state proceedings would let the lawsuit continue against major energy firms.
Across 6 frontier models answering independently, the panel is barely on the yes side: the median is 53%.
They do not agree: DeepSeek puts it at 62% and Gemini at 27%, 35 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Nothing is settled until 5 Nov 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
This turns on whether the Court treats municipal climate damages as preempted federal common law or as ordinary state tort claims.
- Suncor v. Boulder was argued October 2026, so a ruling is near-certain before the June 2027 window closes.
- The Court in 2021's BP v. Baltimore unanimously sent similar climate suits back to state court, a strong base rate favoring remand.
- Justices Alito and Gorsuch have signaled skepticism of state-court climate claims, but Kavanaugh and Barrett are the likely swing votes.
62% -
GPTOpenAI
It turns on whether the Court treats Boulder’s claims as state-law torts rather than federal emissions regulation.
- The Justices must issue an opinion by June 2027, their normal deadline for argued October cases.
- In BP v. Baltimore (2021), the Court expanded review of remand orders but did not decide climate torts are federal.
- A clear holding that interstate-emissions claims are exclusively federal would sharply lower this estimate.
61% -
ClaudeAnthropic
Hinges on whether SCOTUS affirms the 10th Circuit's jurisdictional ruling keeping Boulder's case in state court.
- Lower courts (10th Circuit) already ruled state court is proper, and SCOTUS historically defers to such jurisdictional rulings in similar climate suits (e.g., declined…
- Oral arguments already occurred Oct 2026, so a decision by June 2027 is plausible within typical SCOTUS term timelines ending by late June.
- Main risk is a reversal favoring federal jurisdiction given the Court's recent skepticism toward state-level climate tort claims and energy-industry-friendly majority.
58% -
QwenAlibaba
SCOTUS granting cert on jurisdictional climate cases historically signals intent to reverse the lower court's state-court ruling.
- The Supreme Court reverses the lower court in roughly 60-70% of granted cases; cert grant here likely signals skepticism of state-court jurisdiction.
- The 6-3 conservative majority has shown hostility to judicial climate remedies (West Virginia v. EPA, 2022), making a state-court green light less likely.
- A shift would require at least one conservative justice (Barrett or Kavanaugh) joining a state-court majority, which is possible but not the modal outcome.
48% -
GrokxAI
OT2026 merits ruling on removal must favor Boulder remand by end of June.
- Companies almost certainly sought cert after a 10th Circuit remand; grants in that posture reverse ~70% of the time.
- Conservative majority has treated climate-nuisance claims as federal-question or federal-officer cases in prior removal fights.
- A surprise 5-4 or 6-3 for state court would require Roberts/Barrett peeling off; that is the only development that would flip the forecast.
35% -
GeminiGoogle
The conservative majority is primed to find federal preemption to prevent fragmented state-court regulation of global emissions.
- A 6-3 conservative bench has consistently curbed state-level extraterritorial climate regulation under federal common law doctrines.
- A ruling is due by June 2027 following fall 2026 arguments, leaving ample time for a formal merits opinion reversing the 10th Circuit.
- The odds shift above 50 only if Roberts and Kavanaugh treat the issue purely as a narrow procedural remand rather than preemption.
27%
6 of 6 models answered · 35 points between the highest and lowest. None was shown the market price.
Question sourced from a news sweep on 5 Nov 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.