Claude Sonnet 4.6 (May 2025)
Claude Sonnet 4.6 (May 2025) is a dated-release checkpoint of Anthropic's Sonnet 4.6 model, pinned to May 14, 2025. The Sonnet tier in Claude's 4.x generation delivers strong everyday performance — coding, analysis, instruction-following, and content generation — at a more practical cost than Opus, making it the recommended default for high-volume production workloads.
The pinned release ID enables teams to lock their deployments against this specific checkpoint, ensuring consistent outputs across CI pipelines, evaluations, or customer-facing products. Sonnet 4.6 maintains Anthropic's focus on reliability, reduced harmful outputs, and practical agentic tool-use capabilities.
Key Features
Production-grade balance of capability and inference cost
Pinned May 2025 checkpoint for reproducible deployments
Strong coding assistance across Python, TypeScript, and other languages
Effective multi-tool use for agentic task completion
High-quality summarization, drafting, and structured extraction
Consistent instruction-following with low output variance
Ideal Use Cases
High-volume production APIs requiring a stable model version
Developer tooling and coding assistant products
Automated document processing and information extraction
Customer-facing chat and support interfaces
CI-integrated evaluation pipelines with fixed model targets
Example Prompts for Claude Sonnet 4.6 (May 2025)
Technical Specifications
| Provider | Anthropic |
| Category | Text |
| Modality | Text -> Text |
| Context Window | 200K tokens |
Frequently Asked Questions
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