Last refreshed 2026-05-11. Next refresh: weekly.
Why use GPT-5 Nano on OpenRouter?
OpenRouter offers GPT-5 Nano with pay-as-you-go pricing at $0.05/1M 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 Nano across 4 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-nanoopenai/gpt-5-nanoRequest example
openai/gpt-5-nano.Gotchas
- Use provider model ID "openai/gpt-5-nano", not the LLMReference slug "gpt-5-nano".
Compare GPT-5 Nano Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Replicate API | $0.05 | $0.40 |
| OpenRouter | $0.05 | $0.40 |
| OpenAI API | $0.05 | $0.40 |
| Vercel AI Gateway | $0.05 | $0.40 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.05 |
| Output tokens | $0.40 |
Capabilities
About GPT-5 Nano
Fastest, cheapest GPT-5 variant for summarization and classification tasks. Also available via Realtime API.
FAQ
What does GPT-5 Nano cost on OpenRouter?
On OpenRouter, GPT-5 Nano costs $0.05 per 1M input tokens and $0.4 per 1M output tokens.
What is the context window for GPT-5 Nano on OpenRouter?
GPT-5 Nano supports a 400k token context window on OpenRouter.
How does OpenRouter compare to other GPT-5 Nano providers?
GPT-5 Nano is available from 4 providers. The cheapest input pricing is $0.05/1M tokens from Replicate API.
What API model ID do I use for GPT-5 Nano on OpenRouter?
Use the model ID openai/gpt-5-nano when calling OpenRouter's API.
Who created GPT-5 Nano?
GPT-5 Nano was created by OpenAI as part of the GPT-5 model family.
Is GPT-5 Nano open source?
GPT-5 Nano is not open source; the seed data lists it as proprietary.