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JSON

2 statements across 1 episodes · 1 bullish · 0 bearish · 1 people on the record · first statement Jul 26, 2026 by Dianne Penn · across every show →

Everything said about JSON, oldest first

Jul 26, 2026
Assertion Not checkable as stated
Penn: 80% of early Claude instruction failures were invalid JSON outputs
“And what I saw was something like 80% of what people meant in the early days for this failure was Claude would not write the right JSON.”
Dianne Penn Jul 26, 2026 ▶ 45:25 Why AI is going vertical (again) | Dianne Penn (Anthropic)
Jul 26, 2026 positive
Assertion Not checkable as stated
Penn: Claude scores 99.9% to 100% on JSON schema formatting evals
“When we have versions of Claude, we actually run that eval and just check. I think at this point it's always a hundred percent or like 99.9. And so it's no longer a pain point.”
Dianne Penn Jul 26, 2026 ▶ 46:14 Why AI is going vertical (again) | Dianne Penn (Anthropic)
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