---
id: "anthropic/claude-opus-4.6"
also: ["anthropic/claude-4.6-opus-20260205", "requesty/anthropic/claude-opus-4-6", "vercel/anthropic/claude-opus-4.6"]
card_usd_per_m: "5.0 in, 25.0 out, at anthropic"
cheapest_list_usd_per_m: "5.0 in, 25.0 out, at amazon-bedrock on openrouter"
cheapest_effective_usd_per_m: "1.5031 in, 25.0 out, at anthropic on openrouter"
context: 1000000
max_output: 128000
input: ["text", "image", "file"]
output: ["text"]
released: "2026-02-04"
reasoning: ["max", "high", "medium", "low", "none"]
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["include_reasoning", "max_completion_tokens", "max_tokens", "reasoning", "reasoning_effort", "response_format", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "top_k", "top_p", "verbosity"]
endpoints: 16
gateways: "openrouter (8), requesty (5), vercel (3)"
no_training: 14
trains: 0
retains_prompts: 4
---
# Anthropic: Claude Opus 4.6

Opus 4.6 is the world’s best model for coding and professional work, built to power agents that take on whole categories of real-world work. It excels across the entire SDLC, breaking through on hard problems, identifying complex bugs, and demonstrating deeper codebase understanding. It also delivers a step-change in knowledge work, with near-production-ready documents, presentations, and spreadsheets on the first pass.