Claude 4.6Released 2026-02-05
Claude Opus 4.6
Most capable model for complex reasoning, coding, and autonomous agents
Family
Claude 4.6
Release Date
2026-02-05
Best For
Complex coding, autonomous agents, advanced reasoning, multi-step planning
Overview
Claude Opus 4.6 is Anthropic's flagship model and the most capable AI for complex reasoning, coding, and autonomous agent workflows. It features a 1M token context window, fast mode for 6x faster output at premium pricing, and state-of-the-art performance across coding, mathematics, and scientific reasoning benchmarks. Designed for professional use cases where output quality is the primary concern.
Pricing
Input / 1M tokens
$5.00
Output / 1M tokens
$25.00
Context Window
1000K
Max Output
32K
API model ID:
claude-opus-4-6Key Features
✓1M token context window with standard pricing
✓Industry-leading coding and software architecture capabilities
✓Advanced autonomous agent execution with multi-step reasoning
✓Fast mode available for 6x faster output
✓State-of-the-art on GPQA, SWE-bench, and coding benchmarks
✓32K token max output for detailed, thorough responses
✓Web search and code execution tool support
Use Cases
Complex software architecture and system design
Autonomous agent development and orchestration
Advanced research requiring deep logical reasoning
Multi-step planning for complex engineering projects
Professional code review and technical documentation
Scientific computing and data analysis
Benchmarks
| Benchmark | Score |
|---|---|
| Graduate-Level Reasoning (GPQA) | 91.3% |
| Coding (SWE-bench Verified) | 80.8% |
| Multilingual Math (MGSM) | 97.1% |
| MMLU (5-shot) | 92.4% |
| Humanity's Last Exam | 53.0% |
| Terminal-Bench 2.0 | Industry-leading |
| BigLaw Bench | 90.2% |