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: 13 backed, 13 mixed, 15 not checked yet.

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October 2026

Oct 23
Kimi K3.1 ProMoonshot AIReleasedFrontierCopy the link to this entry
Moonshot’s new flagship, with a 1-million-token context and a faster Highspeed version, in Kimi’s apps and API. Moonshot says it nearly matches Claude Opus 5.5 on a coding test and promises the weights by November 4.
Claim check: MixedArtificial Analysis scores it 55, fourth of 215 models, but found it slower than average and very wordy, and lists it as proprietary until the weights are out.
Price $2 / $10 per million input / output tokens
Moonshot launches Kimi K3.1 Pro, open weights due Nov 4

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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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