kitio.aiLangfuse vs PromptLayer
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 $49 for PromptLayer.
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 registry
- Visual prompt editor
- Evaluation pipelines
- Request logging
- Release labels
| Feature | Langfuse | PromptLayer |
|---|---|---|
| Best for | Open-source LLM observability, prompt management and evals | Prompt management and evals for teams where non-engineers edit prompts |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $29/mo | $49/mo |
| Free plan | Yes | Yes |
| Made by | ClickHouse | PromptLayer |
| Based in | United States | 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 $49 for PromptLayer.
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
4 plans
Free
Free
- 5 users
- 2.5K requests/month
- 1 workspace
Pro
$49/mo
- Unlimited workspaces and playgrounds
- 150MB max per dataset
- Overage $0.003 per request
Team
$500/mo
- 25 users
- 100K+ requests/month
- Overage $0.002 per request
Enterprise
Custom
- Custom limits
- RBAC and deployment approvals
- HIPAA with BAA
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
PromptLayer
- Friendly for non-engineers
- Simple prompt versioning
- Backtests on real traffic
- Less depth on agent tracing
- Limits on lower plans
- Smaller ecosystem
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 PromptLayer if you want:
- Friendly for non-engineers
- Simple prompt versioning
- Backtests on real traffic
Watch out: less depth on agent tracing.
Langfuse vs PromptLayer FAQ
What is the difference between Langfuse and PromptLayer?
Langfuse: Open-source LLM observability, prompt management and evals. PromptLayer: Prompt management and evals for teams where non-engineers edit prompts. Both are models & apis tools.
Is Langfuse or PromptLayer cheaper?
Langfuse has the lower starting price: about $29 a month, against $49 for PromptLayer.
Do Langfuse and PromptLayer have free plans?
Langfuse: Yes. PromptLayer: Yes.
Who makes Langfuse?
Langfuse is made by ClickHouse, based in United States.
Who makes PromptLayer?
PromptLayer is made by PromptLayer, based in United States.
Which should I choose, Langfuse or PromptLayer?
Choose Langfuse if you value free to self-host and no seat-based fees. Choose PromptLayer if you value friendly for non-engineers and simple prompt versioning.