kitio.aiLunary vs PromptGround
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lunary starts at $20/mo and PromptGround 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
- Prompt version tracking
- Live prompt editor
- One API key for many models
- Python and JavaScript SDKs
- Run logs and spend tracking
- Prompt variables
| Feature | Lunary | PromptGround |
|---|---|---|
| Best for | Observability, prompt management and evals for LLM apps | Prompt versioning, testing and one API key for many models |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $20/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Lunary | PromptGround |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
Lunary starts at $20/mo and PromptGround 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 Oct 29, 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
PromptGround
- One key covers several model providers
- Free team members and unlimited projects
- Per-run logs show token use and cost
- Paid plan prices are not shown on the homepage
- Only Python and JavaScript SDKs are listed
- Free tier is a one-time token allowance
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 PromptGround if you want:
- One key covers several model providers
- Free team members and unlimited projects
- Per-run logs show token use and cost
Watch out: paid plan prices are not shown on the homepage.
Lunary vs PromptGround FAQ
What is the difference between Lunary and PromptGround?
Lunary: Observability, prompt management and evals for LLM apps. PromptGround: Prompt versioning, testing and one API key for many models. Both are models & apis tools.
Is Lunary or PromptGround cheaper?
Lunary starts at $20/mo and PromptGround starts at See pricing page. Check both pricing pages for current plans.
Do Lunary and PromptGround have free plans?
Lunary: Yes. PromptGround: Yes.
Who makes Lunary?
Lunary is made by Lunary.
Who makes PromptGround?
PromptGround is made by PromptGround.
Which should I choose, Lunary or PromptGround?
Choose Lunary if you value prompts and traces in one tool and self-hosting option. Choose PromptGround if you value one key covers several model providers and free team members and unlimited projects.