o3 Pro
API ID o3-pro
o3-pro is an OpenAI model, released June 2025. It has a 200,000-token context window and up to 100,000 output tokens. It takes image input and supports function calling, structured outputs and reasoning. Standard price: from $20.00 input and from $80.00 output per 1M tokens.
- Status
- Active
- Released
- June 2025
- Shutdown
- none announced
- Replacement
- —
No deprecation or shutdown date has been announced as of October 15, 2026.
Alias
All aliasesCurrently points to o3-pro-2025-06-10 (in place when tracking began (October 7, 2026)).
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Structured outputsThe model can be held to a JSON schema you supply, so every reply parses without retries or cleanup. | Supported | in place when tracking began (October 7, 2026) | source |
| Function callingAlso called tool use. You describe functions; the model replies with a function name and arguments for your code to run, then uses the result. | Supported | in place when tracking began (October 7, 2026) | source |
| Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests. | Supported | in place when tracking began (October 7, 2026) | source |
| Image inputImages such as screenshots, photos and charts can go in the prompt for the model to read. | Supported | in place when tracking began (October 7, 2026) | source |
| Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time. | Supported | in place when tracking began (October 7, 2026) | source |
| Fine-tuningYou can train your own version of the model on your examples through the company's API, then call it like any other model. | Not supported | in place when tracking began (October 7, 2026) | source |
| Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word. | 200,000 tokens | in place when tracking began (October 7, 2026) | source |
| Max output tokensThe longest reply the model can write in one response, in tokens. A token is about three-quarters of an English word. | 100,000 tokens | in place when tracking began (October 7, 2026) | source |
Not published by OpenAI: Prompt caching, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Price history
USD per 1M tokens, standard tierWe started recording this model's prices on Oct 1, 2026. The history grows with each daily check.
Show as a table
| From | Type | Price |
|---|---|---|
| Oct 1, 2026 | Input | $20.00 |
| Oct 1, 2026 | Output | $80.00 |
Prices
USD per 1M tokens, every type and band, by tier| Type | Band | Price $/1M | In effect |
|---|---|---|---|
| Standard | |||
| input | short context | $20.00 | |
| output | short context | $80.00 | |
| Batch | |||
| input | short context | $10.00 | |
| output | short context | $40.00 | |
Changelog
Changes we detected on OpenAI's pagesNo changes recorded yet.
Email alerts
Get an email if o3-pro changes
We'll email you the same morning we spot a deprecation notice, a new or moved shutdown date, a price change, or the model leaving OpenAI's model list.
No password: one email to confirm, and you can unsubscribe any time. Privacy
Last checked · Sources: OpenAI deprecations, OpenAI pricing, OpenAI models