Last refreshed 2026-06-15. Next refresh: weekly.
Why use GPT-5 Pro on OpenRouter?
OpenRouter offers GPT-5 Pro with pay-as-you-go pricing at $15.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare GPT-5 Pro across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: openai/gpt-5-proopenai/gpt-5-proRequest example
openai/gpt-5-pro.Gotchas
- Use provider model ID "openai/gpt-5-pro", not the LLMReference slug "gpt-5-pro".
Compare GPT-5 Pro Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Vercel AI Gateway | $15.00 | $120.00 |
| OpenRouter | $15.00 | $120.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $15.00 |
| Output tokens | $120.00 |
| Image input | $1.00 |
Capabilities
About GPT-5 Pro
GPT-5 Pro is OpenAI's most advanced GPT-5 tier, offering major improvements in reasoning, code quality, and user experience for enterprise and power-user applications at 400K context.
FAQ
What does GPT-5 Pro cost on OpenRouter?
On OpenRouter, GPT-5 Pro costs $15 per 1M input tokens and $120 per 1M output tokens.
What is the context window for GPT-5 Pro on OpenRouter?
GPT-5 Pro supports a 400k token context window on OpenRouter.
How does OpenRouter compare to other GPT-5 Pro providers?
GPT-5 Pro is available from 2 providers. The cheapest input pricing is $15/1M tokens from Vercel AI Gateway.
What API model ID do I use for GPT-5 Pro on OpenRouter?
Use the model ID openai/gpt-5-pro when calling OpenRouter's API.
Who created GPT-5 Pro?
GPT-5 Pro was created by OpenAI as part of the GPT-5 model family.
Is GPT-5 Pro open source?
GPT-5 Pro is not open source; the seed data lists it as proprietary.