Simple pricing for everyone
Start for free, collaborate with your team, and scale as you grow.
All plans include unlimited users.
Free
Perfect for small businesses and solopreneurs.
$0/ month + VAT
Start for free- Unlimited users
- 5 Prompts
- 24-hours Test Result history
- No version history
- 1000 Logs per Month
- Community support
Pro
Most popular
Better for growing businesses with more customers.
$99/ month + VAT
Get started for free- Unlimited users
- Unlimited number of Prompts
- Unlimited Test Results
- Unlimited Prompt Versions
- 10000 Logs per Month
- E-mail support
- Live LLM assertions soon
Enterprise
Best for large businesses with advanced needs.
Custom
Contact us- Everything in Pro
- SAML Single-Sign-On (SSO)
- Custom Security Questionnaires
- Custom contract & SLAs
- Unlimited Logs per Month
- Private Slack support channel
Frequently asked questions
Testimonials
Engineering and AI teams Langtail
“Langtail simplifies the development and testing of Deepnote AI, enabling our team to focus on further integrating AI features into our product”
“If you're continuously optimizing your LLMs and not using a logging solution, you're seriously missing out. As a prompt engineer, I absolutely love the freedom to test whatever I want independently of the backend team. And finally, we see this within a quality user interface.”
Ready to upgrade your AI dev workflow?
Langtail is the most enjoyable way to debug, test, and observe LLM-powered apps. Try it for free, no credit card needed.