Structured Output Benchmark: leaderboard

Structured-output benchmark measuring schema-constrained generation with value accuracy, faithfulness, JSON validity, path recall, type safety, and perfect-output rates.

Metric: Overall (%). Source: interfaze.ai. Saturation forecast: Estimated already saturated. 30 models tracked.

Top models

#ModelScoreOverall rank
1GPT-5.487#79
2Gemini 3.1 Pro (Preview)86.9#58
3GLM-5.186.6#97
4Claude Opus 4.786.4#49
5Claude Sonnet 586.2#57
6Qwen 3.5 35B A3B86.1#256
7GLM-4.786.1#192
8Gemini 2.5 Flash86#245
9GPT-5.586#31
10Qwen 3 235B A22B85.7#313
11Claude Sonnet 4.685.4#90
12Claude Opus 4.685.3#63
13DeepSeek V4 Pro85.3#102
14Kimi K2.685.3#104
15GPT-4.185#248

No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=structured-output-benchmark · How It Works · Data refreshed daily, snapshot 2026-10-20.