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.

October 2026

  1. MAI-Base-2MicrosoftIn trainingFrontierCopy the link to this entry

    Pre-training finished: 2.8 trillion parameters, 80 billion active per token. Now in post-training, with no release date. Microsoft says it beats every open-weight model it tested and plans to license the weights to trusted partners.

    Microsoft finishes pre-training its 2.8T MAI-Base-2 model
  2. Microsoft-Decision-1MicrosoftReleasedSpecialisedCopy the link to this entry

    A small decision model built on Alibaba’s Qwen3.5-9B that scores a fixed list of options, as a rival to Jev. Microsoft says it is the most accurate on 36 tests; no outside test yet.

    Claim check: Not checked yet

    Price $0.042 per million input tokens; output is free

    Microsoft launches Decision-1, a fast model for AI choices
  3. MAI-Transcribe-2-StreamingMicrosoft AIPreviewVoiceCopy the link to this entry

    Microsoft’s first live speech-to-text model, in 60 languages, in public preview in Microsoft Foundry. Two text-to-speech models, MAI-Voice-2.1 and 2.1-Flash, came with it.

    Claim check: BackedOn Artificial Analysis’s streaming leaderboard it gets 2.5% of words wrong at the first partial transcript, the lowest of 32 models shown; the next is 3.4%.

    Price $0.54 per audio hour (introductory, until the end of 2026)

    Microsoft’s live transcription model tops an outside test

How this tracker works

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.

Reusing this list: you may quote it with a link to this page. Facts belong to the sources each story cites.