Ultra-efficient GPT-5 variant for high-volume applications with reasoning support.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Ultra-efficient GPT-5 variant for high-volume applications with reasoning support. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for GPT-5 Nano on LLM Gateway starts at $0.05 per million input tokens and $0.40 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
GPT-5 Nano supports a context window of up to 400,000 tokens on its largest provider deployment.
GPT-5 Nano is served by Azure, OpenAI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. GPT-5 Nano supports both tool (function) calling and strict JSON output schema (upstream-enforced) through LLM Gateway.
GPT-5 Nano was released on August 1, 2025.