LangFast
AutomatedOnline LLM playground for rapid prompt testing and evaluation. Run prompts across multiple AI models, compare responses side-by-side, and iterate with your own API keys.
LangFast has 2 plans: paid plans from $49. We have not recorded a price change.
LangFast plans and prices
1-Year Pass
one time$49
- Access duration — 12 months
- Remove ads / popups
- 150+ AI models (BYOK)
- AI Playground & Chats
- Prompt management
- Prompt evaluations
- Variables & Templates
- Share links & Collaboration
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- 1 GB Storage included
Lifetime Access
one time$60
- Pay once, use forever
- No subscription, no hidden fees
- Free updates and access to new features
- 14-day money-back guarantee
- One-time payment
Price history
Last 0 recorded changes
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