o4 mini Deep Research (2025-06-26)
API ID o4-mini-deep-research-2025-06-26
o4-mini-deep-research-2025-06-26 was an OpenAI model, released June 2025. It had a 200,000-token context window and up to 100,000 output tokens. It took image input and supported reasoning.
- Status
- Retired
- Released
- June 2025
- Shutdown
- Jul 23, 2026
- Replacement
- GPT-5.6 Solgpt-5.6-sol
o4-mini-deep-research-2025-06-26 stopped serving on July 23, 2026. Recommended replacement: gpt-5.6-sol.
Aliases pointing here: o4-mini-deep-research (in place when tracking began (October 7, 2026))
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Prompt cachingA prompt prefix you send again and again (system prompt, documents, tools) is cached, so later requests cost less and start faster. | 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: Structured outputs, Function calling, PDF input, Built-in web search, temperature parameter, top_p parameter, logprobs.
Price history
USD per 1M tokens, standard tierNo price history yet.
Prices
USD per 1M tokens, every type and band, by tierNo published prices.
Changelog
Changes we detected on OpenAI's pagesNo changes recorded yet.
Last checked · Sources: OpenAI deprecations, OpenAI pricing, OpenAI models