.TXT Build pipelines?→Serve models?↓Release models?→
Updated October 31, 2026 · How we measure

Structured-output index

The same model breaks your pipeline's structured outputs 15× more often on some inference providers than on others. Find the best one for your pipelines.

Give this to your agent ↓
← All providers
4 models · 235k structured outputs a day
#ModelBroken
structured outputs
RankBest for
this model
Structured outputs
a day
1MiMo-V2.6-Flashbf160.21%1 of 8—177k
2DeepSeek V4.1 Flash 1017fp82.10%26 of 33Reka AI 0.40%9.5k
3MiMo-V2.6-Probf163.20%2 of 3DeepInfra (fp8) 2.59%47k
4GLM 5fp876.41%3 of 3Baidu Qianfan (fp8) 3.34%1.3k
New models

Get updates when a new model drops

And which provider to use.

For inference providers

Structured outputs don't have to break

The same provider can handle structured outputs well on one model and struggle on the next. Implementations diverge on strings, optionals, composition and conditionals (the April announcement): the schema one provider enforces, another ignores.

Worst model76.41%

of GLM 5's structured outputs fail on GMICloud (fp8).

Best model0.21%

on MiMo-V2.6-Flash, its best model.

Ignored on2 of 4

models, where the settings tell OpenRouter to skip GMICloud.

dotjson plugs into your inference stack, so every model you serve gets perfect structured outputs from day 0.

Fix GMICloud's structured outputs↵