When was o3-mini-high released?

o3-mini-high was released by OpenAI on Friday, Jan 31 2025.

Who made o3-mini-high?

o3-mini-high was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

Is o3-mini-high open source?

No. o3-mini-high is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after o3-mini-high?

OpenAI's previous tracked release was o3-mini on Jan 31 2025. It was followed by GPT-4.5 on Feb 27 2025.

o3-mini-high

Released Jan 31 2025

o3-mini-high is an AI model released by OpenAI on Friday, Jan 31 2025, the same day as o3-mini.

Available from


OpenAI	$1.10	$4.40	200K

USD per 1M tokens

Compare o3-mini-high with

o3-mini-high

Suggested comparisons

o3-mini-highvsGPT-6 Astra o3-mini-highvsClaude Fable 5.1 o3-mini-highvsGemini 3.8 Flash o3-mini-highvsMuse Spark 1.3 o3-mini-highvsGrok 4.6 o3-mini-highvsDeepSeek-V4.1-Flash o3-mini-highvsMistral Medium 3.5 o3-mini-highvsKimi K3 o3-mini-highvsGLM-5.3-Flash o3-mini-highvsQwen3.8-Max-0902 o3-mini-highvsNemotron 3.5 Lightning

Frequently asked questions

: o3-mini-high was released by OpenAI on Friday, Jan 31 2025.
: o3-mini-high was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: No. o3-mini-high is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: OpenAI's previous tracked release was o3-mini on Jan 31 2025. It was followed by GPT-4.5 on Feb 27 2025.