Get Started with GPT-5 Nano on OpenRouter
OpenRouter offers access to GPT-5 Nano with a 128K context window. Multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.05 |
| Output tokens | $0.40 |
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
About GPT-5 Nano
Ultra-lightweight GPT-5 variant for latency-sensitive and high-volume tasks. Smallest and most efficient model in the GPT-5 family. Priced at $0.05 per 1M input tokens.
Model Specs
Released2025-01-21
Context128K
ArchitectureDecoder Only