Side by side
OnlyPrompts vs Prompt Engine
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Automate 37,000+ tasks with 150,000+ prompts
Get the perfect prompt for any AI task
Primary task
Prompts
Prompts
Pricing
Free Trial · Trial; then from $17/mo
Paid · from $9/mo
Pricing details
Free + from $17/mo
from $9/mo
Billing cycle
Monthly
Monthly
API access
Not documented
Not documented
Platforms
Web
Web
Integrations
Make
Not documented
Source rating
4.1 / 5 · 15 ratings
2.9 / 5 · 29 ratings
Catalog views
17k
15k
Estimated monthly traffic
—
—
Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
- 40% OFF offer for early adopters
- 150,000 prompts for 37,000 tasks
- Tailored for every department (Marketing, RnD, Finance, etc…)
- New prompts updated monthly
- Side-by-side prompt test
- Generates high-performing prompts
- Helps in task-specific prompts
- Privacy considerations
- Clear Terms of Service
- Ensures transparency in usage
Listed limitations
- Free trial in a limited time
- Paid version required for full access
- No API mentioned
- Not open-source
- No collaborative features
- No mobile application
- Unclear update policy