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OpenAI: o4 Mini Deep Research.

multimodal closed 200K ctx
Cheapest input
$2.0/M
on OpenAI API
Cheapest output
$8.0/M
on OpenAI API
Fastest
18 tok/s
on OpenRouter
Hosted equiv.
~$2.88/hr
@ 100 tok/s on OpenAI API

o4-mini-deep-research is OpenAI's faster, more affordable deep research model—ideal for tackling complex, multi-step research tasks. Note: This model always uses the 'web_search' tool which adds additional cost.

Hosted API only

No self-host path — closed weights.

OpenAI: o4 Mini Deep Research'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 $2.0 $8.0 Launch ↗
OpenRouter api aggregator $2.0 $8.0 Launch ↗
Performance

Speed across providers.

Tokens/sec and time-to-first-token measured against the same prompt template on each provider's API.

Provider Tokens/sec TTFT Total
OpenRouter 18.2 — 24682 ms
FAQ

Frequently asked.

How do I run OpenAI: o4 Mini Deep Research?
OpenAI: o4 Mini Deep Research 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: o4 Mini Deep Research?
OpenAI: o4 Mini Deep Research 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: o4 Mini Deep Research?
API pricing starts at $2.0/M input tokens and $8.0/M output tokens. Self-hosting cost depends on the GPU you rent — see the Run It Yourself tab.
Is OpenAI: o4 Mini Deep Research open-source or proprietary?
OpenAI: o4 Mini Deep Research is a proprietary model from OpenAI. Access is API-only — there are no public weights to download.