For AI & Prompt Engineers

Compare AI Outputs Across Prompt Versions

Stop guessing which prompt works best. Run side-by-side diffs of AI model outputs, track version history, and ship better prompts faster.

Prompt v1

Summarize this article in 3 bullet points.

Output

• AI is transforming industries
• Costs are dropping rapidly
• Adoption is accelerating

Prompt v2

Summarize this article in 3 concise bullet points with key stats.

Output

• AI cuts costs by 40% in ops
73% of firms adopting AI
• Market hits $1.8T by 2030

Simple Pricing

Pro

$19/mo

Everything you need to ship better prompts

  • Unlimited prompt comparisons
  • Side-by-side diff with highlighting
  • Version history & project management
  • Export results as CSV or JSON
  • Support for GPT-4, Claude, Gemini & more
  • Team collaboration (up to 5 seats)
Get Started

FAQ

Which AI models are supported?

We support OpenAI (GPT-3.5, GPT-4, GPT-4o), Anthropic (Claude 3 family), Google (Gemini Pro, Gemini Flash), and more. You bring your own API keys.

How does the diff highlighting work?

Outputs are compared word-by-word and sentence-by-sentence. Added, removed, and changed content is highlighted with color coding so you instantly see what changed between prompt versions.

Can I cancel anytime?

Yes. Cancel anytime from your billing dashboard. You keep access until the end of your billing period with no questions asked.