# clm_E57A5600BEB6

subject: Cognition (/record/cognition.md)  
predicate: adopted  
value: [Claude Sonnet 4.5](/record/claude-sonnet-4-5.md)  
valid_from: 2025-09-29  
valid_to: null  
published: 2025-09-29  
recorded: 2026-11-10  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-10  
cite: AsOf. "Cognition adopted: Claude Sonnet 4.5", as of 2025-09-29. Claim clm_E57A5600BEB6, https://asof.is/claim/clm_E57A5600BEB6, accessed 2026-11-11. Source: https://cognition.com/blog/devin-sonnet-4-5-lessons-and-challenges.  
checked: 2026-11-10 · its source page states the value and the date  

> We rebuilt Devin for Claude Sonnet 4.5. The new version is 2x faster, 12% better on our Junior Developer Evals, and it's available now in Agent Preview.

What https://cognition.com/blog/devin-sonnet-4-5-lessons-and-challenges says, word for word.

## Sources

- https://cognition.com/blog/devin-sonnet-4-5-lessons-and-challenges (primary, Cognition, published 2025-09-29)

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