kitio.aiLangSmith vs PromptHub
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. PromptHub has the lower starting price: about $12 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
- Git-style prompt versioning
- Prompt playground
- Evaluations across test cases
- Prompt chaining
- Prompt deployment API
- Community prompt library
| Feature | LangSmith | PromptHub |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Prompt versioning, testing and deployment for teams |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $39/mo | $12/mo |
| Free plan | Yes | Yes |
| Made by | LangChain | PromptHub |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
PromptHub has the lower starting price: about $12 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
Free
Free
- 2,000 requests per month
- 10 prompt enhancements per month
- Public prompts only
- Limited API access
Pro
$12/mo
- Single user
- Private prompts
- 10,000 requests per month
- Full API access
Team
$20/mo
- Per user
- Unlimited team members
- 50,000 requests per month
- Team and user permissions
Enterprise
Contact sales
- SSO and SAML
- Custom limits and roles
- Custom model 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
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
PromptHub
- Versioning works like Git for prompts
- Free plan includes all features
- Side-by-side model comparison
- Free plan prompts are all public
- Free plan allows only 2,000 requests a month
- SOC 2 is still in progress
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 PromptHub if you want:
- Versioning works like Git for prompts
- Free plan includes all features
- Side-by-side model comparison
Watch out: free plan prompts are all public.
LangSmith vs PromptHub FAQ
What is the difference between LangSmith and PromptHub?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. PromptHub: Prompt versioning, testing and deployment for teams. Both are models & apis tools.
Is LangSmith or PromptHub cheaper?
PromptHub has the lower starting price: about $12 a month, against $39 for LangSmith.
Do LangSmith and PromptHub have free plans?
LangSmith: Yes. PromptHub: Yes.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes PromptHub?
PromptHub is made by PromptHub.
Which should I choose, LangSmith or PromptHub?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose PromptHub if you value versioning works like git for prompts and free plan includes all features.