Claude Sonnet 4.6
Claude Sonnet 4.6 is the independently released Sonnet update for coding, computer use, long-context reasoning, and professional work. It improved follow-through, instruction following, and visual design and launched with a million-token context in beta. The current API documentation lists that context as standard. It offers adaptive thinking and tools through the Claude API and cloud partners, with text and image inputs and text output.
2026-02-17
Unreleased
Undisclosed proprietary architecture
Proprietary
Specifications
- Parameters
- Unreleased
- Architecture
- Undisclosed proprietary architecture
- License
- Proprietary
- Context Window
- 1,000,000 tokens
- Max Output
- 128,000 tokens
- Training Data Cutoff
- 2026-01
- Type
- multimodal
- Modalities
- textimage
Benchmark Scores
Advanced Specifications
- Model Family
- Claude
- API Access
- Available
- Chat Interface
- Available
- Multilingual Support
- Yes
- Variants
- claude-sonnet-4-6
Capabilities & Limitations
- Capabilities
- agentic codingadaptive thinkingcomputer usevisionlong context
- Known Limitations
- Can make factual or coding errors; tool results and important outputs require verification.Longer reasoning and agent work increase latency and token consumption.
- Notable Use Cases
- software engineeringbrowser workflowsenterprise document analysis
- Function Calling Support
- Yes
- Tool Use Support
- Yes