Best-in-class coding and agentic model with hours-long autonomous operation capabilities. Supports extended thinking, context awareness, parallel tool usage, and vision processing. Refined concise communication style with 64,000 max output tokens. API model name: claude-sonnet-4-5-20250929
Input: Text, Image
Output: Text
Providers
anthropic
Credits
Context200k
Max Output64k
Input$3.00/1M
Output$15.00/1M
Cache Read$0.300/1M
Cache Write$3.75/1M
vertex
Credits
Context200k
Max Output64k
Input$3.00/1M
Output$15.00/1M
Cache Read$0.300/1M
Cache Write$3.75/1M
bedrock
Credits
Context200k
Max Output64k
Input$3.00/1M
Output$15.00/1M
Cache Read$0.300/1M
Cache Write$3.75/1M
helicone
Credits
Context200k
Max Output64k
Input$3.00/1M
Output$15.00/1M
Cache Read$0.300/1M
Cache Write$3.75/1M
openrouter
Credits
Context200k
Max Output64k
Input (Max)$6.33/1M
Output (Max)$23.74/1M
Cache Read—
Cache Write—
Quick Start
Use Anthropic: Claude Sonnet 4.5 through Helicone's AI Gateway with automatic logging and monitoring.