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by OpenAI

OpenAI: o3 Mini.

text closed 200K ctx
Cheapest input
$1.1/M
on OpenAI API
Cheapest output
$4.4/M
on OpenAI API
Hosted equiv.
~$1.58/hr
@ 100 tok/s on OpenAI API

OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding. This model supports the `reasoning_effort` parameter, which can be set to.

Hosted API only

No self-host path — closed weights.

OpenAI: o3 Mini's weights aren't published. Use it via the access providers below.

Where to use it

Cheapest hosted endpoints.

Provider Access $/M in $/M out
OpenAI API api direct $1.1 $4.4 Launch ↗
OpenRouter api aggregator $1.1 $4.4 Launch ↗
FAQ

Frequently asked.

How do I run OpenAI: o3 Mini?
OpenAI: o3 Mini is a closed-source API model. The cheapest way to access it is through the API providers listed on this page (direct API, aggregators, and hosted chat UIs).
Where can I access OpenAI: o3 Mini?
OpenAI: o3 Mini is available via OpenAI API, OpenRouter. Each access option lists its own pricing (per million tokens or hourly hosting).
How much does it cost to run OpenAI: o3 Mini?
API pricing starts at $1.1/M input tokens and $4.4/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is OpenAI: o3 Mini open-source or proprietary?
OpenAI: o3 Mini is a proprietary model from OpenAI. Access is API-only — there are no public weights to download.