kitio.aiLunary vs prst.ai
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lunary starts at $20/mo and prst.ai starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- LLM request logging
- Chatbot analytics
- Prompt versioning
- Human reviews
- AI playground
- CSV and JSONL export
- No-code prompt management
- Prompt versioning and A/B tests
- Custom AI connectors
- Usage-based pricing rules
- Feedback widgets with sentiment analysis
- Self-hosted install
| Feature | Lunary | prst.ai |
|---|---|---|
| Best for | Observability, prompt management and evals for LLM apps | Self-hosted gateway for managing prompts and AI connectors in your app |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $20/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Lunary | prst.ai |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Lunary starts at $20/mo and prst.ai starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
2 plans
Team
$20/mo
- Per user
- 50,000 events per month
- 300 playground queries per month
- Unlimited projects, 1 year history
Enterprise
Custom
- Custom limits
- Plans for larger teams
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Lunary
- Prompts and traces in one tool
- Self-hosting option
- Clear per-seat pricing
- Cloud workspace requires payment up front
- Team plan caps at 10 seats
- Extra events and queries cost more
prst.ai
- Data stays on your own servers
- Built-in A/B testing for prompts
- Works with any AI service via API
- Paid tiers aren't explained in the evidence
- Self-hosting needs your own infrastructure
- Sparse public documentation of limits
Which one should you choose?
Choose Lunary if you want:
- Prompts and traces in one tool
- Self-hosting option
- Clear per-seat pricing
Watch out: cloud workspace requires payment up front.
Choose prst.ai if you want:
- Data stays on your own servers
- Built-in A/B testing for prompts
- Works with any AI service via API
Watch out: paid tiers aren't explained in the evidence.
Lunary vs prst.ai FAQ
What is the difference between Lunary and prst.ai?
Lunary: Observability, prompt management and evals for LLM apps. prst.ai: Self-hosted gateway for managing prompts and AI connectors in your app. Both are models & apis tools.
Is Lunary or prst.ai cheaper?
Lunary starts at $20/mo and prst.ai starts at See pricing page. Check both pricing pages for current plans.
Do Lunary and prst.ai have free plans?
Lunary: Yes. prst.ai: Yes.
Who makes Lunary?
Lunary is made by Lunary.
Who makes prst.ai?
prst.ai is made by prst.ai.
Which should I choose, Lunary or prst.ai?
Choose Lunary if you value prompts and traces in one tool and self-hosting option. Choose prst.ai if you value data stays on your own servers and built-in a/b testing for prompts.