@SemiAnalysis
2026.08.04 16:56

How often does Claude use tools?

We looked through 2.27M Claude responses we collected to find out.

The Opus models show a clear downward trend in tool calls from Opus 4.6 to Opus 4.8. However, Fable 5 stands out against that pattern, averaging 1.00 tool calls per response compared with 0.76 for Opus 4.8 and 0.79 for Opus 5. (1/2)🧵

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