Claude Opus 4 chat

openrouter
anthropic
Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

Capabilities

Context Window 200k tokens
Max Output 32k tokens
Inputs
Outputs

Pricing (per 1M tokens)

Input $15.00
Output $75.00
Cache Read $1.50
Cache Write $18.75

Supported Parameters

include_reasoningmax_tokensreasoningstoptemperaturetool_choicetoolstop_ktop_p