Anthropic
Anthropic Claude model for long-running agentic coding and knowledge work.
1M ctxUSD 4 / 1M input tok; USD 20 / 1M output tok
Introducing Claude Opus 4.6AnthropicReleased February 5, 2026
Claude Opus 4.6
Refined reasoning engine delivering over 80% on SWE-bench Verified with advanced tool choice control.
reasoning-llmProprietary API$5.00 / 1M tok (Opus 4.6)Context: 500K (500,000 tokens)Arena ELO: 1475
Technical Specifications
Architecture Type
Frontier Agentic Transformer
Total Parameters
Frontier Scale
Context Window
500K (500,000 tokens)
Max Output Tokens
64K (64,000 tokens)
Knowledge Cutoff
December 2025
Supported Modalities
text, code, vision, reasoning
License & Access
Anthropic Commercial Terms
Benchmark Evaluations
Mmlu Pro
88
Gpqa Diamond
82.1
Swe Bench Verified
80.2
Chatbot Arena ELO
1475
Deep Architectural Overview
Claude Opus 4.6 expanded precision on multi-file refactors, automated test generation, and deep financial modeling. It established superior long-horizon planning with prompt-engineered tool choice configurations.
Strengths & Considerations
Core Strengths
- 80.2% on SWE-bench Verified software engineering benchmark
- High precision tool calling and system prompt token efficiency
- Active support through February 2027
Known Limitations
- Superseded by Opus 4.8 and Opus 5 for 1M context tasks
Token & API Pricing
Input Tokens (1M)$5.00
Output Tokens (1M)$25.00
Cached Input (1M)$0.5000
Batch API Discount50% Off Standard
Pricing is verified directly against Anthropic's developer documentation and API rate sheets.
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