OpenAI: GPT-5 Pro pricing
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. OpenAI: GPT-5 Pro from OpenRouter costs $15.00 per 1M input tokens and $120.00 per 1M output tokens. Context window 400,000 tokens.
API id openai/gpt-5-pro · OpenRouter · source · updated 2026-09-25 · general-purpose
$15.00
Input / 1M tokens
$120.00
Output / 1M tokens
—
Cached input / 1M
400K
Context window
OpenAI: GPT-5 Pro specifications
- Provider
- OpenRouter
- API id
openai/gpt-5-pro- Model type
- general-purpose
- Context window
- 400K tokens
- Max output
- 128K tokens
- Currency
- USD
- Price source
- Provider API
- Last checked
- 2026-09-25
Tags
- flagship
- vision
gpt-5-pro across providers
The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.
| Provider | Input /1M | Cached /1M | Output /1M | 1M in + 1M out | vs vendor |
|---|---|---|---|---|---|
| $15.00 | — | $120.00 | $135.00 | — | |
| $15.00 | — | $120.00 | $135.00 | — |
What OpenAI: GPT-5 Pro costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.07 |
| Document summary | 50,000 | 2,000 | $0.99 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $39.00 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does OpenAI: GPT-5 Pro cost per 1M tokens?
- OpenAI: GPT-5 Pro costs $15.00 per 1M input tokens and $120.00 per 1M output tokens on the standard tier.
- What is OpenAI: GPT-5 Pro's context window?
- OpenAI: GPT-5 Pro accepts up to 400,000 tokens in a single request, and can return up to 128,000 output tokens.
- Is there a cheaper OpenRouter model than OpenAI: GPT-5 Pro?
- Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $15.00 for OpenAI: GPT-5 Pro, with a 16,385 token context window.
- Where does this OpenAI: GPT-5 Pro price come from?
- From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.
Head-to-head comparisons
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