Claude Opus 4.6
High-end Claude for difficult coding, planning, and slower expert reasoning
AnthropicTextHolo rare
Claude Opus 4.6
High-end Claude for difficult coding, planning, and slower expert reasoning
claude-opus-4-6- Type
- Text
- Quality
- 88 · Top 12% on the Epoch Capabilities Index
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input price
- $5.00 / 1M tokens
- Output price
- $25.00 / 1M tokens
- Cache read
- $0.50 / 1M tokens
- Cache write
- $6.25 / 1M tokens
- Released
- Feb 4, 2026
- Knowledge cutoff
- May 2025
- Takes in
- Text, Image, PDF
- Puts out
- Text
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- File attachments
- Yes
- Access
- Paid
- License
- Proprietary
- Rarity
- Holo rare
- Set number
- 772/1044
Weights aren’t public. Use is governed by Anthropic’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: docs.anthropic.com.