o1 model releases

A source-backed timeline for the o1 model family, collecting release dates, labs, access details, context windows, and major lifecycle changes.

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OpenAI o1

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2 models

General release of OpenAI's o1 reasoning model with stronger deliberative reasoning and multimodal ChatGPT integration.

OpenAI's first public reasoning-model preview, optimized to spend more inference time on hard math, coding, and science tasks.