Model detail
o3-2025-04-16
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.
Model specs
- Context length
- 200K
- Max output
- 100K
- I/O modalities
- Text / Image
- Released
- 2025-04
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API endpoints
One MixRoute gateway, OpenAI-compatible
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OpenAI-compatible
/v1/chat/completionsPOST
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Pricing
Flat rate, unit: /1M Tokens
Input
$2.0000 /1M Tokens
Completion
$8.0000 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Multi-domain reasoning with visual and code analysis
Use o3 for math, science, coding, and visual reasoning tasks. It excels at technical writing, instruction-following, and multi-step problems that involve analysis across text, code, and images.
What should you check before using it?
Test reasoning depth against your task complexity
Confirm that o3's reasoning depth matches your task requirements. Test multi-step problems with visual and code inputs. Account for the thinking time in your latency budget.
Why use it through MixRoute?
Use the compatible endpoint with stable model ID
Use the confirmed compatible endpoint with model ID o3 through MixRoute, then run the same integration tests used for the current client.
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Token cost estimator
Live estimate from this page's pricing, not an actual bill
This model has no cache-read price; caching is not counted
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FAQ
o3 is a well-rounded reasoning model in OpenAI’s o-series. It sets a new standard for math, science, coding, and visual reasoning tasks, and excels at technical writing and instruction-following.
One endpoint, a testable decision
Test this model and alternate routes with the same request format
Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.