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o3-deep-research

Deprecated

Deep-research model. Deprecation announced 2026-04-22; shuts down 2026-07-23, replaced by gpt-5.5-pro. Pricing shown is BATCH tier ($5 in / $20 out per 1M). Context/max-output assumed o3-class (200K/100K).

o3-deep-research by OpenAI costs $5 per 1M input tokens and $20 per 1M output tokens ($8.75/1M blended), with a 200K (200.000-token) context window. It is deprecated, shutting down 23 Jul 2026; the recommended replacement is GPT-5.5 Pro.

Last verified: 13 Aug 2026 · sourced from official provider documentation

Lifecycle warning

This model is deprecated. Scheduled shutdown: 23 Jul 2026. Recommended migration: GPT-5.5 Pro.

Read the o3-deep-research migration guide → replacement & cheapest alternatives

Provider
OpenAI
Status
Deprecated
Input price
$5 / 1M tokens
Output price
$20 / 1M tokens
Cached input
—
Blended price
$8.75 / 1M tokens
Context window
200.000 tokens (200K)
Max output
100.000 tokens
Modality
text, image
Open weights
No — API only
Knowledge cutoff
—
Released
—
API string
o3-deep-research

Source: OpenAI official documentation ↗

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FAQ

o3-deep-research — questions & answers

How much does o3-deep-research cost?

o3-deep-research is priced at $5 per 1M input tokens and $20 per 1M output tokens ($8.75/1M blended at a 3:1 input-to-output ratio).

What is the context window of o3-deep-research?

o3-deep-research has a 200.000-token context window (200K), with up to 100.000 output tokens per request.

Is o3-deep-research being deprecated or retired?

o3-deep-research is deprecated. Its scheduled shutdown date is 23 Jul 2026. The recommended migration is GPT-5.5 Pro.

Does o3-deep-research support image or vision input?

Yes — o3-deep-research accepts image input. Listed modalities: text, image.

Can I self-host o3-deep-research?

No — o3-deep-research is proprietary. Its weights are not publicly released, so it is available only through OpenAI's API (or hosted partners), not for self-hosting.

What is the API model string for o3-deep-research?

The API model identifier for o3-deep-research is "o3-deep-research" when calling OpenAI's API.