AI Tool
Langtail pricing, features, company info, and alternatives
A factual product page for Langtail as an LLMOps platform for prompt management and testing.
Last updated April 2026 · Pricing and features verified against official documentation
Pricing
Current public pricing tiers on file for Langtail, last verified Apr 26, 2026.
Free
$0 / month
+ VAT; unlimited users; 2 prompts or assistants; 1,000 logs per month; 30 days of data retention; public shareable apps.
Pro
$99 / month
+ VAT; 1 user; 20 prompts or assistants; unlimited logs; 90 days of data retention; public shareable apps.
Team
$499 / month
+ VAT; 10 users; unlimited prompts or assistants; unlimited logs; 1 year of data retention; public shareable apps; radars and alerts; dedicated support.
Enterprise
Custom
Unlimited users; unlimited prompts or assistants; unlimited logs; custom data retention; public shareable apps; radars and alerts; AI Firewall; dedicated support; self-hosting.
What You Can Do With It
The main capabilities that shape how people use Langtail today.
Lets teams build and collaborate on prompts in the playground.
Provides tests with text, JavaScript, and LLM assertions to validate prompt outputs.
Publishes prompts as API endpoints and supports an OpenAI proxy and TypeScript SDK workflow.
Shows logs and metrics for prompt and deployment activity, including latency and cost.
Best For
Who Langtail is most clearly built for.
Product teams that want to manage prompts from experimentation through deployment.
Engineering teams that want prompt testing, logging, and metrics in one workflow.
Teams that want an API-centric prompt platform with a self-hosting option on enterprise.
Company
Leadership and company context for LANGTAIL.COM s.r.o..
CEO
Petr Brzek
Founders
Petr Brzek, Tomas Rychlik, Martin Duris
Headquarters
Záhřebská 562/41, Vinohrady, 120 00 Prague 2, Czech Republic
Platforms
Where you can use Langtail today.
Web
API
Self-hosted
Privacy Notes
Publicly stated data-handling notes that matter when evaluating Langtail.
The privacy policy says Langtail processes account, payment, technical, and cookie data to provide and improve the service.
It says PII is shared only within Langtail and with employees, contractors, and affiliated organizations that need it to provide the services.
It says newsletter subscribers can receive marketing communications and can unsubscribe by email or by contacting the company.
Access
How to integrate or build around Langtail.
Public API
Yes
Docs
Available
Alternatives
Other tools worth considering alongside Langtail.
Framework-agnostic platform for observability, evaluation, and deployment of AI agents and LLM apps.
Open-source LLM engineering platform for tracing, prompt management, evaluations, and analytics.
AI agent testing and LLM evaluation platform for observability, prompt management, simulations, and guardrails.
Open-source observability and evaluations platform for AI apps and agents.
Product Snapshot
Langtail is an LLMOps platform for prompt management, testing, deployment, and monitoring. It is aimed at product, engineering, and AI teams working on prompt-driven applications.
What You Can Do With It
- Build and collaborate on prompts in the playground.
- Run tests with text, JavaScript, and LLM assertions.
- Deploy prompts as API endpoints and use the OpenAI proxy or TypeScript SDK.
- Review logs and metrics for prompt activity, including cost and latency.
Why It Stands Out
It combines prompt management, testing, deployments, logs, and metrics in one product, with a self-hosting path on the enterprise plan.
Tradeoffs To Know
- The free plan limits you to 2 prompts or assistants and 1,000 logs per month.
- The Pro plan is limited to 1 user.
- Self-hosting is listed on the enterprise plan rather than the lower-cost tiers.
Sources
- langtail.com/pricing
- langtail.com/privacy-policy
- langtail.com/about
- langtail.com
- langtail.com/docs/introduction/what-is-langtail
- langtail.com/docs/concepts-and-examples/tests/overview
- langtail.com/docs/concepts-and-examples/deployments/overview
- langtail.com/docs/concepts-and-examples/logs-and-metrics/overview
- langtail.com/docs/concepts-and-examples/sdks/typescript
- langtail.com/docs/introduction/getting-started
- langtail.com/docs/api-reference/endpoint/threads