ended7월 9일· 1 sources
Structured Outputs vs Tool Use vs Prefills: Getting JSON Out of Claude in 2026
Why it matters
For a long time the trick to force a model into JSON was to prefill the assistant turn with an opening brace. That trick is dead on the current Claude models. It returns a 400. If you are still doing ...
1
Sources
+0
24h
—
Growth
74d
Active