Claude Sonnet 4.6
Last model on the older tokenizer. Adaptive thinking (budget_tokens deprecated). Training data cutoff Jan 2026. Bedrock via InvokeModel. Retirement not sooner than 2027-02-17.
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Knowledge cutoff
- 2025-08
- Input
- text, image, pdf
- Output
- text
- License
- proprietary
- Pricing
- input: $3 · output: $15 · cache read: $0.3 (per 1M tokens (USD); Batch API 50% off) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| Anthropic API (Claude API) | claude-sonnet-4-6 | https://api.anthropic.com/v1/messages | docs |
| AWS Bedrock (InvokeModel) | anthropic.claude-sonnet-4-6 | — | docs |
| Google Cloud Vertex AI | claude-sonnet-4-6 | — | docs |
| Microsoft Foundry (Azure) | claude-sonnet-4-6 | — | docs |
| Claude Platform on AWS | claude-sonnet-4-6 | — | docs |
| OpenRouter | anthropic/claude-sonnet-4.6 | openrouter.ai/anthropic/claude-sonnet-4.6 | — |
| Web app | — | claude.ai | — |
Notable capabilities (3)
- Human-level computer use on common tasks: Anthropic cites human-level performance on tasks such as navigating complex spreadsheets and multi-step web forms (OSWorld). source
- Beats previous Opus in user preference: Users preferred it to Opus 4.5 59% of the time on coding, citing less overengineering. source
- 1M context for Sonnet 4.6: 1M-token context window (beta at launch). source
Legacy Sonnet; migrate to claude-sonnet-5-5.
curl https://api.anthropic.com/v1/messages \
-H "x-api-key: $ANTHROPIC_API_KEY" -H "anthropic-version: 2023-06-01" -H "content-type: application/json" \
-d '{"model":"claude-sonnet-4-6","max_tokens":16000,"messages":[{"role":"user","content":"Hello"}]}'
Sources:
- Model page: https://platform.claude.com/docs/en/models/sonnet-4-6/overview
- Announcement: https://www.anthropic.com/news/claude-sonnet-4-6
- Pricing: https://platform.claude.com/docs/en/about-claude/pricing
- Models overview: https://platform.claude.com/docs/en/about-claude/models/overview
- Deprecations: https://platform.claude.com/docs/en/about-claude/model-deprecations
Other Anthropic models
Claude Sonnet 5.5 · Claude Opus 5.5 · Claude Fable 5.1 · Claude Mythos 5.1 · Claude Haiku 4.5 · Claude Opus 5 · Claude Sonnet 5 · Claude Fable 5 · Claude Opus 4.8 · Claude Opus 4.7 · Claude Opus 4.6 · Claude Opus 4.5 · Claude Sonnet 4.5 · Claude Opus 4.1 · Claude Sonnet 4