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Updated October 29, 2026

Tool-call index

Not all models are served equally by all providers. On a typical model, the worst provider breaks tool calls 19× as often as the best. Find the best one for your agents.

← All providers
5 models · 435k tool calls a day
#ModelBroken
tool calls
RankBest on
the model
Tool calls
a day
1gpt-oss-120b0.04%1 of 15—110k
2MiniMax M2.70.32%1 of 6—2.1k
3gpt-oss-20b0.33%2 of 7Darkbloom (fp8) 0.13%307k
4Llama 3.1 8B Instruct1.00%1 of 2—15k
5Llama 3.3 70B Instruct2.21%1 of 5—2.5k
New models

Get updates when a new model drops

And which provider to use.

For inference providers

Tool calling doesn't have to break

The same provider can handle tool calls well on one model and struggle on the next.

Worst model2.21%

of Llama 3.3 70B Instruct's tool calls fail on Groq.

Best model0.04%

on gpt-oss-120b, its best model.

Best on4 of 5

models, where Groq is the most reliable provider.