o3

A reasoning model combining visual reasoning and tool use, released in ChatGPT and the API.

LegacyReasoningCodingMultimodalWeights not released

MODEL NUMBER218

Specifications

Only published specifications are shown.

Input modalities

Text · Image

Output modalities

Text

Open weights

Status

Legacy

A reasoning model combining visual reasoning and tool use, released in ChatGPT and the API.

Compared with o1 ↗

Previouso1— · — ctx

Currento3— · — ctx

2025-04-16General release

o3 launched.

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