ai prompt management · prompt comparison tool

The prompt comparison tool for teams shipping AI features.

PromptForge is an AI prompt management platform that versions every prompt you write, runs old and new side by side against real models, and keeps the receipts.

Start free — 20 runs/mo Try the free tool

No credit card. No API keys. No social feed.

Built for prompt versioning and comparison

Prompt changes ship silently and break silently. PromptForge makes each change explicit, testable, and reversible with a full prompt versioning workflow.

Side-by-side compare

Run two prompt versions against the same input and read both outputs next to each other with latency and token counts.

Real version history

Every edit becomes a numbered version with a note. Roll back, diff intent, and know exactly what changed.

Multiple models

Test the same prompt across fast and frontier models without wiring up a single API key.

Private by default

No feeds, no sharing, no public profiles. Your prompts are visible only to your account.

How the prompt comparison tool works

Compare two prompt versions against the same input in one workflow. See which one performs better, costs less, and returns more reliable output — without leaving the app.

1. Save a version

Every edit creates a numbered prompt version with a note, so you always know what changed and why.

2. Pick two versions

Select any two versions from your history and enter the test input you care about.

3. Run and compare

Both versions run against real models. Outputs, response times, and token counts appear side by side.

Pricing

Start free. Upgrade when your test volume grows.

Free

$0/mo

·3 prompts
·20 test runs / month
·Full version history
·Side-by-side compare

Start free

Pro