# clm_E18E5EA540B6

subject: Claude 3.5 Sonnet (/record/claude-3-5-sonnet.md)  
predicate: model_release  
value: Claude Sonnet 3.5  
valid_from: 2024-06-20  
valid_to: null  
published: no source on record carries a date  
recorded: 2026-11-04  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
checked: 2026-11-04 · its source page states the value and the date  

> June 20th, 2024 Claude Sonnet 3.5 , our most intelligent model yet, is now available across the Claude API, Amazon Bedrock, and Vertex AI.

What https://platform.claude.com/docs/en/release-notes/overview says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview (primary, Anthropic (Claude Platform release notes))

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