Get Started with GPT-5 on OpenRouter
OpenRouter offers access to GPT-5 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 | $1.25 |
| Output tokens | $10.00 |
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
About GPT-5
OpenAI's GPT-5 base model. Flagship-tier multimodal model with function calling, tool use, and JSON mode. Priced at $1.25 per 1M input tokens and $10 per 1M output tokens via the OpenAI API. Part of the GPT-5 generation that spans multiple variants from nano to full-weight.
Model Specs
Released2025-01-21
Context128K
ArchitectureDecoder Only