Model detail
gpt-5-pro
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.
Model specs
- Context length
- 400K
- Max output
- 272K
- I/O modalities
- Text / Image
- Released
- 2025-10
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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
$15.0000 /1M Tokens
Completion
$120.0000 /1M Tokens
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Selection summary
Quickly judge whether it fits your workload
What is this model good for?
Complex reasoning and high-stakes knowledge work
Use gpt-5-pro for demanding tasks that need careful reasoning, strong code quality, instruction following, and accuracy.
What should you check before using it?
Keep human review for consequential decisions
Evaluate factual reliability, task quality, latency, cost, and appropriate review controls before using it in high-impact workflows.
How should you start?
Use gpt-5-pro for evaluated high-value cases
Start with model ID gpt-5-pro on a small benchmark of difficult tasks and use measured results to decide where the Pro tier adds value.
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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
gpt-5-pro is intended for complex reasoning, high-stakes knowledge work, code quality, and tasks that need careful instruction following and accuracy.
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.