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Windtunnel · Interactive Demo
A/B test your AI agent prompts before you ship them.
Windtunnel runs your baseline and challenger prompts against the same test inputs, then uses an LLM judge to score each response pair. If your challenger regresses, it gets blocked.
Run · Sample DataBLOCKED
Support Bot — Prompt v2 vs v3
Ran 8 production interactions · Completed just now
🚫
Deploy Blocked
BLOCKED
50% regression rate — exceeds 30% threshold. Fix your challenger prompt before shipping.
exit code: 1
8
Total
4
Regressed
3
Improved
1
Neutral
Interaction Results
✗ WorseHow do I reset my password?▾
✓ BetterWhat payment methods do you accept?▾
✗ WorseCan I export my data?▾
✓ BetterHow long does shipping take?▾
✗ WorseDo you offer a free trial?▾
✓ BetterHow do I contact support?▾
✗ WorseIs my data secure?▾
— NeutralCan I change my subscription plan?▾
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