Model Tracker
o3-pro
o3-pro is an AI model made by OpenAI. OpenAI released it on 10 June 2025. It is deprecated. It takes text, image and returns text.
o3-pro is an AI model made by OpenAI. OpenAI released it on 10 June 2025. It is deprecated. It takes text, image and returns text. Its context window is 200,000 tokens. Its longest answer is 100,000 tokens. Its knowledge cutoff is 1 June 2024.
- Released
- 10 June 2025 — help.openai.com, read 19 October 2026
- Status
- Deprecated — developers.openai.com, read 19 October 2026
- Takes
- Text, Image — developers.openai.com, read 19 October 2026
- Returns
- Text — developers.openai.com, read 19 October 2026
- Open weights
- Not confirmed: OpenAI's pages checked do not state whether o3-pro's weights are open or downloadable.
- Licence
- Not confirmed: OpenAI's pages checked do not state a licence for o3-pro.
- Context window
- 200,000 tokens — developers.openai.com, read 19 October 2026
- Longest answer
- 100,000 tokens — developers.openai.com, read 19 October 2026
- Knowledge cutoff
- 1 June 2024 — developers.openai.com, read 19 October 2026
- API price, input
- Not confirmed: OpenAI's current API pricing page does not list o3-pro. Its model page displays a rate, but this field requires the standard price from the pricing page.
- API price, output
- Not confirmed: OpenAI's current API pricing page does not list o3-pro. Its model page displays a rate, but this field requires the standard price from the pricing page.
- Where
- API — developers.openai.com, read 19 October 2026
- Parameters
- Not confirmed: OpenAI's pages checked do not publish a parameter count for o3-pro.
- Model card
- https://openai.com/index/o3-o4-mini-system-card/ — openai.com, read 19 October 2026
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Epoch AI
- Epoch Capabilities Index, o3-pro: 147.4 (145.7–150.2), as of 19 October 2026
Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0
Questions
When was o3-pro released?
OpenAI released o3-pro on 10 June 2025.
Is o3-pro still available?
It is deprecated: OpenAI has announced the date it will retire it.
What is the context window of o3-pro?
The context window of o3-pro is 200,000 tokens, as OpenAI prints it.
What does o3-pro take and return?
o3-pro takes text, image and returns text.
What is the knowledge cutoff of o3-pro?
The knowledge cutoff of o3-pro is 1 June 2024.
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Sources
- o3-pro Model | OpenAI API (read 19 October 2026)
- Changelog | OpenAI API (read 19 October 2026)
- Deprecations | OpenAI API (read 19 October 2026)
- Pricing | OpenAI API (read 19 October 2026)
- Model Release Notes | OpenAI Help Center (read 19 October 2026)
- OpenAI o3 and o4-mini System Card | OpenAI (read 19 October 2026)