Get Started with Claude Sonnet 4.5 on OpenRouter
OpenRouter offers access to Claude Sonnet 4.5 with a 200K 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 | $3.00 |
| Output tokens | $15.00 |
Capabilities
VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode Execution
About Claude Sonnet 4.5
Claude Sonnet 4.5 available on AWS Bedrock
Model Specs
Released2025-09-29
Context200K
ArchitectureDecoder Only
Knowledge cutoff2025-12