Prices and claims are what each story reports; a company’s own benchmark stays a company claim. The claim check compares each maker’s main claim with an independent test that our story cites. Released models so far: 6 backed, 9 mixed, 12 not checked yet.

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September 2026

Sep 22
GPT-6 Sol and GPT-6 LunaOpenAIReleasedFrontierCopy the link to this entry
Two cheaper tiers below GPT-6 Astra in the API. OpenAI’s own tables put Sol ahead of Claude Opus 5 on AutomationBench.
Claim check: MixedArtificial Analysis finds them about level with GPT-5.6, at roughly half the cost per task: cheaper, not smarter.
Price $2 (Sol) and $0.10 (Luna) per million input tokens, half of GPT-5.6’s prices
OpenAI’s GPT-6 Sol and Luna cut API prices in half

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An entry appears when one of our stories covers a model launch, a preview, a reported plan, or a model becoming available on a new platform. A claim is Backed when an outside test supports it, Mixed when it holds only in part or only in some settings, and Disputed when an outside test contradicts it. The date is the one the story gives; when a story gives none, it is the story’s own date. We add entries with each edition and correct them under the story when a fact changes.

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