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Updated October 31, 2026 · How we measure

Tool-call index

The same model breaks your agent's tool calls 18× more often on some inference providers than on others. Find the best one for your agents.

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Mistral · 1 provider · 125k tool calls a day
#ProviderTool calls
a day
$ in / out
per M
Tokens/sUptime
1Mistral#5.20%18k$0.70 / $2.108699.9%
2Mistralzdr#13.24%107k$0.70 / $2.108799.9%
No recommended settings for Mistral Large 4

Every provider breaks 3% of tool calls or more.

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For model makers

Broken tool calls carry your model's name

Your users don't see the provider. They see your model failing.

Worst provider13.24%

of Mistral Large 4's tool calls fail on Mistral (zdr).

Best to worst3×

as often on Mistral (zdr) as on Mistral, its best provider.

Every day15k

broken tool calls a day across its 1 provider.

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