kitio.aiLangSmith vs Respan
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. LangSmith starts at $39/mo and Respan starts at See pricing page. Check both pricing pages for current plans.
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
- One API for 1,000+ models
- Automatic model fallbacks
- Response caching
- Agent tracing
- LLM-as-judge evaluators
- Red-team testing
| Feature | LangSmith | Respan |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | LLM gateway with tracing, monitoring and automated evals |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $39/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | LangChain | Respan |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Both offer: Agent tracing.
Pricing compared
LangSmith starts at $39/mo and Respan starts at See pricing page. Check both pricing pages for current plans.
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
3 plans
Free
Free
- 100k logs
- 1k scores
- 5 datasets
- 2 evaluators
Team
$199/mo billed yearly
- Unlimited datasets and evaluators
- Unlimited prompts
- SOC 2 report
- Private Slack channel
Enterprise
Contact sales
- Custom packages
- Custom SLAs
- Dedicated 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
Respan
- Routing and evals in one product
- Generous free tier with 100k logs
- Open-source gateway
- Team plan is billed yearly
- Extra logs and seats cost more
- HIPAA compliance is a paid add-on
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 Respan if you want:
- Routing and evals in one product
- Generous free tier with 100k logs
- Open-source gateway
Watch out: team plan is billed yearly.
LangSmith vs Respan FAQ
What is the difference between LangSmith and Respan?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Respan: LLM gateway with tracing, monitoring and automated evals. Both are models & apis tools.
Is LangSmith or Respan cheaper?
LangSmith starts at $39/mo and Respan starts at See pricing page. Check both pricing pages for current plans.
Do LangSmith and Respan have free plans?
LangSmith: Yes. Respan: Yes.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Respan?
Respan is made by Respan.
Which should I choose, LangSmith or Respan?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Respan if you value routing and evals in one product and generous free tier with 100k logs.