medium★ EssentialOpenAIAnthropicScale

You need guaranteed JSON from the model, but it keeps breaking the schema. What do you do?

JSON mode, strict schemas, constrained decoding, validate-and-retry: the escalation ladder for structured output, plus the catch nobody mentions: schema-valid can still be factually wrong.

Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

JSON mode, strict schemas, constrained decoding, validate-and-retry: the escalation ladder for structured output, plus the catch nobody mentions: schema-valid can still be factually wrong.

more free answers with an account · no card

UP NEXT ON YOUR JOURNEY

Learners often go here nextA customer says your LLM app is too slow. Give me five levers to reduce latency, and their tradeoffs.Next in this trackWhen is an agent the wrong answer? Argue against using agents.Next in this trackHow does prompt caching work, and when does it actually pay off?

DISCUSSION · 0

No comments yet — be the first to share your approach.