AI Prompt Regression Testing Tool

Developers building AI agents struggle to catch when prompt changes break functionality without manual testing. A tool that automatically detects regressions when you modify system prompts, swap models, or tweak agent behavior—alerting you before users do.

The explosion of production AI agents in 2024-2025 has created a real gap: teams are shipping prompt changes with the same cowboy energy they used to ship untested SQL migrations, and the consequences are similarly painful. No clear incumbent owns this space—Braintrust and LangSmith touch adjacent ground with evaluation frameworks, but neither is squarely focused on regression detection as a developer workflow primitive. The $2k-10k MRR band is plausible if you can land on per-seat or per-run pricing with small engineering teams, though it implies staying small or treating this as a wedge into broader LLM observability. The most likely failure mode is that teams roll their own eval scripts and never pay for a standalone tool, especially as LangSmith and similar platforms continue expanding their feature surface.