Claude Fable 5.1
OperationalSuper Intelligence model · Anthropic · flagship tier · called every 24 h
Uptime · 24 hours100.00%
Drift score100.0
3 days of uptime
6 Oct 2026Today
Speed and latency
How fast Claude Fable 5.1 answers on Anthropic, over the last 24 hours of our calls.
Time to first token · p501376 ms
Time to first token · p951376 ms
Total response time · p501387 ms
Total response time · p951387 ms
Time to first token is the wait for the first word of a short streamed answer; total response time is until that answer is complete. We do not measure tokens per second. All Anthropic models, side by side →
Quality drift
Latest score100.0
14-day average100.0
+0.0
The same 30 graded tasks, run on a schedule. The score is the share of them the model passed, so a falling line means it passed fewer; last run 59 min ago.
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