kitio.aiLangSmith vs Langfuse
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 $39 for LangSmith.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Agent tracing
- Datasets and evaluators
- Prompt hub
- Agent deployment
- Online monitoring
- LLM tracing
- OpenTelemetry support
- Prompt management
- Evaluations and datasets
- Self-hosting
| Feature | LangSmith | Langfuse |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Open-source LLM observability, prompt management and evals |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $39/mo | $29/mo |
| Free plan | Yes | Yes |
| Made by | LangChain | ClickHouse |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Langfuse has the lower starting price: about $29 a month, against $39 for LangSmith.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Developer
Free
- 1 seat
- 5k base traces / month, then pay as you go
- Community support
Plus
$39/mo
- Per seat
- 10k base traces / month, then pay as you go
- Access to Deployment and Engine
- Unlimited seats
Enterprise
Custom
- Self-hosted and hybrid deployment
- Custom SSO, ABAC and RBAC
- Support SLA
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
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
LangSmith
- Detailed agent traces
- Strong LangGraph integration
- Works with any framework
- Per-seat pricing adds up
- Trace retention costs extra
- Self-hosting is enterprise-only
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
Which one should you choose?
Choose LangSmith if you want:
- Detailed agent traces
- Strong LangGraph integration
- Works with any framework
Watch out: per-seat pricing adds up.
Choose Langfuse if you want:
- Free to self-host
- No seat-based fees
- Works with any framework
Watch out: self-hosting needs ops work.
LangSmith vs Langfuse FAQ
What is the difference between LangSmith and Langfuse?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Langfuse: Open-source LLM observability, prompt management and evals. Both are models & apis tools.
Is LangSmith or Langfuse cheaper?
Langfuse has the lower starting price: about $29 a month, against $39 for LangSmith.
Do LangSmith and Langfuse have free plans?
LangSmith: Yes. Langfuse: Yes.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Langfuse?
Langfuse is made by ClickHouse, based in United States.
Which should I choose, LangSmith or Langfuse?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Langfuse if you value free to self-host and no seat-based fees.