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OpenAI: o3:free
o3:free
200K context100K outReasoningToolsVisionFilesCacheStructured
Released Apr 16, 2025Knowledge cutoff Jun 2024Updated Jun 20, 2026
o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following. Use it to think through multi-step problems that involve analysis across text, code, and images.
Mode chatTokenizer GPTModeratedDeprecation Nov 2026
All providers for this model are busy right now
Every upstream provider has hit its rate limit. The model comes back automatically once limits lift, usually within hours. Try again in a little while or switch to another model.
Request this model on DiscordPricing
Input price
$0.00/ 1M tokens
Output price
$0.00/ 1M tokens
Context window 200K tokensCompatible endpoints openaiVendor OpenAI
Uptime
Performance
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Supported parameters
All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.
| Parameter | Providers | Default |
|---|---|---|
| include_reasoning | All providers | - |
| max_tokens | All providers | - |
| reasoning | All providers | - |
| response_format | All providers | - |
| seed | All providers | - |
| structured_outputs | All providers | - |
| tool_choice | All providers | - |
| tools | All providers | - |