kitio.aiAdded Oct 29, 2026
Langtail
Freemium · $99/moPrompt management and testing for product teams
What is Langtail?
Langtail is a prompt management platform where teams write, test and deploy prompts together. It adds version control, logs and testing so that unpredictable model output is checked before it reaches users.
The product covers collaborative prompt engineering from idea to production, with assistants, logs and data retention that grow with each plan. Higher tiers add radars and alerts and dedicated support.
Its homepage argues for prompt management by citing public chatbot failures, and also announces a separate launch called Macaly, an AI website builder for SEO and AEO marketing sites.
Features
- Prompt versioning
- Prompt testing
- Logs
- Deployment
- Radars and alerts
- Shareable apps
Tags
Releases
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Organization
Langtail
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- $99/mo
- Billing frequency
- Monthly
Langtail plans
Free
Free
- Unlimited users
- 2 prompts or assistants
- 1,000 logs per month
- 30 days data retention
Pro
$99/mo
- 1 user
- 20 prompts or assistants
- Unlimited logs
- 90 days data retention
Team
$499/mo
- 10 users
- Unlimited prompts or assistants
- Radars and alerts
- Dedicated support
Prices in USD, checked Oct 29, 2026. Plans change often, so confirm on the Langtail site.Official pricing
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Pros and cons
Pros
- Free plan with unlimited users
- Combines testing and logging
- Version control for prompts
Cons
- Free plan allows only 2 prompts
- Team plan costs $499 a month
- Prices exclude VAT
Prompts & results
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Q&A
What is Langtail?
Langtail is a prompt management platform where teams write, test and deploy prompts together. It adds version control, logs and testing so that unpredictable model output is checked before it reaches users.
How many users does the free plan allow?
The free plan allows unlimited users, with 2 prompts or assistants and 1,000 logs per month.
How much does Langtail cost?
Langtail is freemium, with paid plans from $99/mo.
Is there a free version of Langtail?
Yes. Langtail has a free plan, and paid plans add more usage and features.
What are the main features of Langtail?
Prompt versioning, Prompt testing, Logs, Deployment, Radars and alerts, Shareable apps.
Who makes Langtail?
Langtail is made by Langtail.
What are the best alternatives to Langtail?
Popular alternatives include PromptHub, PromptGround, LangSmith.