Stop asking the model for JSON. Constrain it.
This story is from 2026-09-10. It is preserved in the archive; the latest stories are on the live feed.
Every app that parses an LLM's output starts the same way. You end the prompt with "Respond only with valid JSON," it works in every test you write, and then it ships. A while later a request comes back wrapped in a `` json fence, or with a cheerful "Sure, here is the JSON:" in front of it, or with…
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- 2026-09-10 03:03 · DEV Community — AI
Stop asking the model for JSON. Constrain it.