kitio.aiLangfuse vs Langtail
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Langfuse has the lower starting price: about $29 a month, against $99 for Langtail.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- LLM tracing
- OpenTelemetry support
- Prompt management
- Evaluations and datasets
- Self-hosting
- Prompt versioning
- Prompt testing
- Logs
- Deployment
- Radars and alerts
- Shareable apps
| Feature | Langfuse | Langtail |
|---|---|---|
| Best for | Open-source LLM observability, prompt management and evals | Prompt management and testing for product teams |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $29/mo | $99/mo |
| Free plan | Yes | Yes |
| Made by | ClickHouse | Langtail |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
Langfuse has the lower starting price: about $29 a month, against $99 for Langtail.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Hobby
Free
- Free cloud plan
- Limited usage and history
Core
$29/mo
- 100k units included, $8/100k extra
- 90 days data access
- Unlimited users
Pro
$199/mo
- 3 years data access
- High rate limits
- SOC2 and ISO27001 reports
Enterprise
$2499/mo
- Audit logs and SCIM API
- Uptime and support SLA
- Named support engineer
3 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 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Langfuse
- Free to self-host
- No seat-based fees
- Works with any framework
- Self-hosting needs ops work
- Advanced features on paid tiers
- UI can feel dense
Langtail
- Free plan with unlimited users
- Combines testing and logging
- Version control for prompts
- Free plan allows only 2 prompts
- Team plan costs $499 a month
- Prices exclude VAT
Which one should you choose?
Choose Langfuse if you want:
- Free to self-host
- No seat-based fees
- Works with any framework
Watch out: self-hosting needs ops work.
Choose Langtail if you want:
- Free plan with unlimited users
- Combines testing and logging
- Version control for prompts
Watch out: free plan allows only 2 prompts.
Langfuse vs Langtail FAQ
What is the difference between Langfuse and Langtail?
Langfuse: Open-source LLM observability, prompt management and evals. Langtail: Prompt management and testing for product teams. Both are models & apis tools.
Is Langfuse or Langtail cheaper?
Langfuse has the lower starting price: about $29 a month, against $99 for Langtail.
Do Langfuse and Langtail have free plans?
Langfuse: Yes. Langtail: Yes.
Who makes Langfuse?
Langfuse is made by ClickHouse, based in United States.
Who makes Langtail?
Langtail is made by Langtail.
Which should I choose, Langfuse or Langtail?
Choose Langfuse if you value free to self-host and no seat-based fees. Choose Langtail if you value free plan with unlimited users and combines testing and logging.