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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.

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8 models · 1.5M structured outputs a day
#ModelBroken
structured outputs
RankBest for
this model
Structured outputs
a day
1Gemma 4 26B A4B0.46%5 of 11Prime Intellect (bf16) 0.23%1.1M
2MiMo-V2.6-Flashfp80.81%2 of 8GMICloud (bf16) 0.21%182k
3DeepSeek V4.1 Flash 1017fp80.81%5 of 33Reka AI 0.40%37k
4Kimi K3fp40.91%6 of 20Parasail (fp4) 0.20%10k
5GLM 5.3 Flash1.15%15 of 29Parasail (fp4) 0.28%140k
6Muse Spark Openfp41.61%3 of 4Together 0.68%2.0k
7DeepSeek V4.1 Flashfp82.17%18 of 28DeepInfra (fp8/flex) 0.35%43k
8GLM 5.3fp42.74%13 of 28Together 0.25%7.4k
New models

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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 model2.74%

of GLM 5.3's structured outputs fail on Makora (fp4).

Best model0.46%

on Gemma 4 26B A4B, its best model.

Best on0 of 8

models, where Makora is the most reliable provider.

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

Fix Makora's structured outputs↵