For AI Product Teams

See exactly what changed
between prompt versions

Side-by-side diff highlighting with semantic change detection and GPT-4 performance impact predictions. Stop guessing why your prompts regressed.

Start for $25/mo

Cancel anytime. Instant access.

v1 — Original
v2 — Updated
You are a helpful assistant.
Answer concisely.
Use bullet points.
You are an expert assistant.
Answer concisely.
Use numbered steps.
+2 semantic changes detected·Predicted: +12% task completion rate

Simple Pricing

PRO
$25
/month per workspace
  • ✓Unlimited prompt comparisons
  • ✓Semantic change detection
  • ✓GPT-4 performance predictions
  • ✓Version history & branching
  • ✓Real-time team collaboration
  • ✓Slack & GitHub integrations
Get Started

FAQ

How does the performance prediction work?

We send both prompt versions to GPT-4 with a structured evaluation rubric. It scores each version on clarity, specificity, and task alignment, then predicts relative performance change based on the semantic delta.

Can I use this with any LLM, not just GPT-4?

The diff engine works with any text-based prompt. Performance predictions currently use GPT-4 as the evaluator, but the comparison view supports prompts for Claude, Gemini, Llama, and any other model.

Is my prompt data kept private?

Yes. Prompts are encrypted at rest and never used for training. Each workspace is fully isolated. You can also self-host the diff engine on your own infrastructure on the Enterprise plan.