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24%

An independent evaluator publishes completed-task cost showing GPT-5.6 Luna at least 60% cheaper per completed agentic task than GPT-5.6 Terra by September 30, 2026.

Probability history

0%25%50%75%100%08-01deadline

Called at 62% on August 1, 2026. Not yet repriced. 19 days past deadline, awaiting adjudication.

How the number was built

Final method: stacked-fixed-weights (resolved n=74 < 80). Each rung is an independent estimate; the final is a stacked combination.

Stated (issue date)62%
Reference class (n=10)50%
Recalibrated54%
Feature model56%
Council8%
Final24%

Drivers

  • Reference class qtype:timing runs 0.50 (n=10) vs stated 0.62.
  • Hierarchical calibration moves stated 0.62 to 0.54 (lens software, kappa_stated=80.0, kappa_lens=200.0).
  • Feature model at 0.56: conjuncts=1, named disclosure=False, horizon=60d.
  • Council of 5 at 0.08 with dissent.

Cautions

  • all 5 votes came from one vendor (openai); extremization disabled, persona diversity only

Council

5 personas on one model (openai/gpt-5.6-sol); other vendors were unavailable this run, so read this as one model's persona-averaged view, aggregated by log odds mean without extremization. Dissent: grid-and-power-economist at 0.34 vs capital-markets-credit-analyst at 0.02: The deadline has passed, but the supplied public digest contains no qualifying independent completed-task cost comparison. / The deadline passed 19 days ago, and the supplied public digest contains no qualifying independent evaluation.

34%

grid and power economist · openai/gpt-5.6-sol

The deadline has passed, but the supplied public digest contains no qualifying independent completed-task cost comparison. The resolution rule requires more than model availability, token pricing, or vendor-reported efficiency: an independent evaluator must publish task-level cost below the specified bar by September 30. That documentation requirement materially lowers the software base rate, especially under resolution against ambiguity. The forecaster’s 0.62 also sits in a historically overconfident band, whose realized outcome rate was about 0.55. I therefore favor a miss, while retaining meaningful probability because an evaluator publication may exist outside the supplied digest.

6%

semiconductor supply chain analyst · openai/gpt-5.6-sol

The deadline passed 19 days ago, and the supplied public digest contains no qualifying independent completed-task cost comparison for GPT-5.6 Luna. The rule requires more than model availability, pricing, or vendor claims: an independent evaluator had to publish the specified comparison by September 30. Evaluator testing and publication commonly lag model release, while the exact model name and cost-bar test add failure modes. Because ambiguity resolves against the forecaster, undocumented or differently framed cost results would miss. Residual probability reflects incomplete coverage of evaluator publications in the digest.

2%

capital markets credit analyst · openai/gpt-5.6-sol

The deadline passed 19 days ago, and the supplied public digest contains no qualifying independent evaluation. Resolution requires the full conjunction: GPT-5.6 Luna, a completed-task cost metric, cost below the stated bar, and publication by September 30. Model availability or vendor pricing alone would not count. Such completed-task analyses typically lag model release, and ambiguity resolves against the forecaster. The original 0.62 also exceeded the forecaster’s realized 0.548 rate in its confidence band, but the missing post-deadline evidence is decisive.

2%

superforecaster statistician · openai/gpt-5.6-sol

Base rate: 0.446 for software questions, with the forecaster’s 0.60–0.69 band realizing only 0.526 versus its stated confidence. The deadline passed 19 days ago, yet the supplied public digest contains no qualifying independent completed-task cost comparison. Resolution additionally requires the exact model, a below-bar result, completed-task methodology, and publication by the hard date; vendor pricing is insufficient. The unspecified “stated bar” and ambiguity-against policy further reduce the chance that an unclear comparison qualifies.

24%

geopolitics regulation analyst · openai/gpt-5.6-sol

The deadline passed 19 days ago, so the outcome is fixed, but no qualifying independent completed-task cost comparison is present in the supplied evidence. The rule is narrower than ordinary token-price reporting: it requires completed-task cost, the specified model, and performance below the stated bar, all published by September 30. Vendor figures and later evaluator updates do not count, while ambiguity resolves to miss. Those documentary requirements justify a substantial discount from the software reference rate and the forecaster’s 0.62.

Evidence the engine used

direct · undated

AI Model &amp; API Providers Analysis | Artificial Analysis

Cited by grid-and-power-economist: The deadline has passed, but the supplied public digest contains no qualifying independent completed-task cost comparison. The resolution rule requires more than model availability, token pricing, or vendor-reported efficiency: an independent evaluator must publish