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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
8 models · 117k tool calls a day
#ModelBroken
tool calls
RankBest on
the model
Tool calls
a day
1Kimi K3fp40.52%23 of 24DeepInfra (mxfp4) 0.01%1.8k
2Qwen3.8 27Bfp81.00%12 of 21Darkbloom (fp4) 0.07%9.2k
3Qwen3.6 35B A3Bfp81.63%1 of 6—66k
4GLM 5.3fp82.25%34 of 42Amazon Bedrock 0.08%9.2k
5gpt-oss-120bbf163.10%6 of 15Groq 0.04%13k
6Gemma 4 26B A4Bfp48.70%11 of 11NextBit (bf16) 0.00%1.9k
7gpt-oss-20bfp420.78%6 of 7Darkbloom (fp8) 0.13%6.2k
8Llama 3.3 70B Instructfp832.75%5 of 5Groq 2.21%9.0k
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 model32.75%

of Llama 3.3 70B Instruct's tool calls fail on AkashML (fp8).

Best model0.52%

on Kimi K3, its best model.

Ignored on4 of 8

models, where the settings tell OpenRouter to skip AkashML.