Claude Opus 4.6 Complete Guide: Features, Performance & Pricing
Everything you need to know about Claude Opus 4.6: comprehensive feature breakdown, benchmark performance, pricing, and how it compares to previous versions.
TL;DR
Claude Opus 4.6, released February 5, 2026, is Anthropic's most capable model yet. Featuring 200K context, 82.1% SWE-bench Verified score, and enhanced agent capabilities, it represents a significant upgrade from Opus 4.5. Pricing remains at $15/$75 per million tokens with improved cost efficiency.
What's New in Opus 4.6
Key improvements over Claude 4.5 Opus:
- Performance: 82.1% SWE-bench (up from 80.9%)
- Speed: 25% faster response times
- Agent Mode: Enhanced autonomous task execution
- Reliability: Fewer hallucinations, better factual accuracy
- Tool Use: Improved MCP integration
Benchmark Performance
| Benchmark | Opus 4.6 | Opus 4.5 | Improvement |
|---|
| SWE-bench Verified | 82.1% | 80.9% | +1.2% |
| GPQA Diamond | 88.5% | 87.3% | +1.2% |
| HumanEval | 97.8% | 97.3% | +0.5% |
| MATH | 94.2% | 92.8% | +1.4% |
Context Window
Opus 4.6 maintains the 200K token context window with improved quality at maximum length.
Pricing
| Model | Input ($/M) | Output ($/M) |
|---|
| Claude Opus 4.6 | $15.00 | $75.00 |
Conclusion
Claude Opus 4.6 solidifies Anthropic's position as the leader in coding AI. The incremental improvements in performance, speed, and reliability make it the best choice for complex development tasks.