Simple pricing. Free forever.
The prompt generator, optimizer, prompt library, version history, and skill generator are free to use — with one blind AI comparison a day on top. Pro is an optional upgrade for people who live in this tool. The free tools are never taken away.
Free
$0 / forever
✓ Unlimited prompt generation & optimization
✓ All 7 frameworks (ROLE, COAST, TAG, and more)
✓ 15+ target AI models
✓ Version history & diff — see how each rewrite changed the prompt
✓ 1 blind AI comparison per day on free models
✓ 3 Prompt Coach scores/day & 3 test runs/day
✓ Full prompt library, skill generator & loop engineering
✓ Copy & one-click Markdown export
Start generating free →Pro
$5 / month
or $39/year — about $3.25/mo, save 35%
✓ Compare AI Lab — send one prompt to any three models side by side, unlimited, with blind mode.
✓ No daily limits — unlimited Prompt Coach, test runs, prompt chains and A/B tests.
✓ Reusable tasks with weekly reminders — save a task once, get an email on the day you repeat it, and fill in only what changed.
✓ $2 of AI credits every month — billed at exact provider cost, no markup, top up any time.
Everything else in Pro (17 more)
- Answer repair & chat handover — fix weak results and continue long work safely
- Private tasks in the browser extension, plus in-place optimize in any AI chat box
- Prompt Chains — pipe each step’s output into the next
- A/B testing with an AI judge
- Prompt Workspace — reusable templates with dropdown & default fields
- Weekly Routines — an email on the day you repeat each task (up to 25)
- Multiple client & project profiles
- API access — generate prompts from your own code
- Batch Prompt Runner — one template across up to 100 rows, exported as CSV
- Golden Tests — score a prompt across models and test cases
- Context Vault — unlimited brand, persona & audience snippets
- Agent Rules Studio — .cursorrules, CLAUDE.md, Copilot instructions & more
- Full de-slop & anti-hallucination guardrails in the generator
- Image input in the Compare Lab
- All prompt packs included + a new drop each month
- Cloud library & version history synced across devices
- Priority generation · ad-free · everything in Free
🛡️ 7-day money-back guarantee — cancel any time from your account.
Pro is linked to the email you pay with, so use the one you sign in with. See the refund policy.
Prompt Packs
Curated mega-packs for specific fields — marketing, coding, content, LinkedIn, business, and AI. 20+ prompts plus multi-step flows each.
✓ $3 per pack, or all 6 for $12 (save $6)
✓ Copy-paste ready for any AI model
✓ Every flow runs as a Prompt Chain on Pro
✓ One-time purchase, instant delivery
Browse prompt packs →What Pro actually saves you
The honest maths: subscribing to ChatGPT Plus, Claude Pro and Gemini Advanced separately costs roughly $60 a month. Pro is $5, and the Compare Lab lets you put the same prompt through all three — and a dozen others — paying only the fraction of a cent each answer actually costs at the provider.
| What you want to do | Free | Pro |
|---|---|---|
| Generate & optimize prompts | Unlimited | Unlimited, priority queue |
| Version history & diff | On this device | Synced across devices |
| Score a prompt (Coach) | 3 / day | Unlimited |
| Compare models side by side | 1 blind run/day, free models | Any 3 models, unlimited |
| Prompt chains (multi-step flows) | — | Included |
| A/B test with an AI judge | — | Included |
| Workspace tasks (reusable templates) | Save & reuse | Plus AI field drafting |
| Weekly Routines (email reminders) | 1 task | Up to 25 tasks |
| Client/project profiles | 1 profile | Multiple profiles |
| Answer repair & chat handover | — | Metered assisted actions |
| Private tasks in browser extension | Public catalog | Tasks, profiles & form filling |
| Output requirements checklist | Deterministic checks | Optional AI-assisted checks |
| API access | — | Included |
| Batch Prompt Runner | 3 rows/day, free models | Up to 100 rows, any model |
| Golden Tests (multi-model evals) | 1 case, 1 free model/day | Up to 5 cases × 3 models |
| Context Vault snippets | 1 snippet | Unlimited |
| Agent Rules Studio | 5 generations/day | Unlimited |
| De-slop & anti-hallucination guardrails | Basic toggle | Full strictness controls |
| Browser extension in-place optimize | — | Included |
| Prompt packs | $3 each | All included |
Get the weekly prompt drop
One email a week: the best new prompts, a framework tip, and a featured Agent Skill. Unsubscribe any time.
Pricing FAQ
Is PromptVibe really free?
Yes. Generating and optimizing prompts is free and unlimited, and so are the prompt library, skill generator, version history and loop engineering tools. Free members also get one blind AI comparison a day and three Prompt Coach scores a day. Pro is an optional upgrade — nothing that is free today gets taken away.
What do I get with Pro that I don't get free?
The headline is the Compare AI Lab: send one prompt to any three models (ChatGPT, Claude, Gemini, DeepSeek and more) at once and see their answers side by side — in blind mode if you want to judge without knowing the brand. Pro also adds prompt chains (each step's output feeds the next), A/B testing with an AI judge, unlimited Prompt Coach, the reusable-template Workspace, multiple client profiles, answer repair, chat handover, private extension tasks, API access, every prompt pack, cloud-synced version history, priority generation, and an ad-free experience.
How much does Pro cost, and is the annual plan cheaper?
Pro is $5 per month, or $39 per year — about $3.25 a month, which saves 35%. Both plans include the same features and the same monthly credit allowance.
What are AI credits, and what happens when they run out?
Running a prompt through a model costs money at the provider. PromptVibe passes that through at the exact provider cost — no markup — and shows the amount for every single run. Pro includes $2 of credits a month, which is a lot when a typical comparison costs a fraction of a cent. If you run out, free models keep working, you can top up at any time, and your allowance refreshes on renewal.
Can I cancel?
Yes, any time — your Pro features stay active until the end of the period you already paid for, and your saved prompts, templates and history remain yours. See the refund policy for details.