Claude 3.7 Sonnet
Anthropic's first model with extended thinking — significant reasoning improvement over 3.5 Sonnet, now superseded by Sonnet 4.6.
Pricing
Input$3 / 1M
Cached inputAvailable
Output$15 / 1M
Extended thinking tokens billed at output rate.
Cost bandBalanced
Free tierClaude.ai free tier; API is paid.
Limits
Context window200k
Max output128k (with extended thinking)
Knowledge cutoffNov 1, 2024
DeploymentClaude Platform, Bedrock, Vertex AI
OpenAI-compatible APINo
ModalitiesText, Image input
Where it fits
Best forTeams on Claude 3.x who want stronger reasoning without upgrading to the 4.x pricing tier.
Business fitConsider migrating to Claude Sonnet 4.6 for 1M context and better agent performance at the same price.
Capabilities
Extended thinkingTool useVision
Change history
- Feb 19, 2026DeprecatedClaude 3.7 Sonnet retired Retired from the Claude API on Feb 19, 2026. Anthropic's recommended replacement: Claude Sonnet 4.6. Anthropic model deprecations
- Feb 24, 2025New modelClaude 3.7 Sonnet added to index First Claude with extended thinking. 200K context, $3/$15 per 1M. Now superseded by Sonnet 4.6 but still live.
Data
Last checkedJan 10, 2026
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