Anthropic: Claude Sonnet 5 Knowledge Cutoff (2026-01-31)
Claude Sonnet 5's knowledge cutoff is 2026-01-31, which was 276 days ago. Its freshness score is 87 out of 100.
Data sourced from OpenRouter API and manual data collection | Last updated: Nov 3, 2026, 8:01 AM UTC
Knowledge cutoff
2026-01-31
Freshness score
87
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Frequently asked questions
When is the knowledge cutoff for Anthropic: Claude Sonnet 5?
Claude Sonnet 5's knowledge cutoff is 2026-01-31, which was 276 days ago. Its freshness score is 87 out of 100.
What can Claude Sonnet 5 know after its knowledge cutoff?
Claude Sonnet 5 stopped learning from its training data on 2026-01-31. It cannot know about world events, news, or new technologies that happened after that date.