Posts tagged json-schema

1 post about json-schema.

• LLM Structured Outputs: 4 of 12 APIs Return Valid but Wrong JSON

  August 25, 2026 · structured-outputs · json-schema · function-calling · reasoning

  Structured outputs measured on 12 LLM APIs: 100% schema-valid JSON, wrong values on 4 models with thinking on, same call billed 30 to 4,959 prompt tokens.