kitio.aiLangSmith vs Graphsignal
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. LangSmith starts at $39/mo and Graphsignal 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
- Continuous GPU profiling
- Observability dashboards
- Signals API for agents
- vLLM, SGLang and TensorRT support
- NVIDIA and AMD GPUs
| Feature | LangSmith | Graphsignal |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Production GPU profiler for tuning AI inference workloads |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $39/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | LangChain | Graphsignal |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
LangSmith starts at $39/mo and Graphsignal 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
- 100 profiled GPU hours a month
- Observability dashboards
- 1 user
Pro
$0.08 / GPU profiled hour
- Continuous production profiling
- Unlimited users
- 30 days data retention
Enterprise
Contact sales
- On-premise option
- Volume discounts
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
Graphsignal
- Based on real production behavior
- Free plan includes 100 profiled hours
- Unlimited users on Pro
- Only useful for self-hosted inference
- Pro data retention is 30 days
- Enterprise pricing is not public
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 Graphsignal if you want:
- Based on real production behavior
- Free plan includes 100 profiled hours
- Unlimited users on Pro
Watch out: only useful for self-hosted inference.
LangSmith vs Graphsignal FAQ
What is the difference between LangSmith and Graphsignal?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Graphsignal: Production GPU profiler for tuning AI inference workloads. Both are models & apis tools.
Is LangSmith or Graphsignal cheaper?
LangSmith starts at $39/mo and Graphsignal starts at See pricing page. Check both pricing pages for current plans.
Do LangSmith and Graphsignal have free plans?
LangSmith: Yes. Graphsignal: Yes.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Graphsignal?
Graphsignal is made by Graphsignal.
Which should I choose, LangSmith or Graphsignal?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Graphsignal if you value based on real production behavior and free plan includes 100 profiled hours.