kitio.aiLangSmith vs Coval
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. LangSmith has the lower starting price: about $39 a month, against $100 for Coval.
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
- Voice agent simulation
- Production call monitoring
- Human review
- Industry scenario packs
- API, CLI and MCP
| Feature | LangSmith | Coval |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Testing and evaluation platform for voice and chat AI agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Free trial |
| Starting price | $39/mo | $100/mo |
| Free plan | Yes | No, 7-day trial |
| Made by | LangChain | Coval |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
LangSmith has the lower starting price: about $39 a month, against $100 for Coval.
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
Starter
$100/mo
- 100 simulation minutes per month
- 1,000 monitored calls per month
- Unlimited seats
Growth
$500/mo
- 1,000 simulation minutes per month
- 10,000 monitored calls per month
- 90-day trace retention
Enterprise
From $4,500/mo
- Custom minutes and calls
- Custom retention limits
- Negotiated overage rates
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
Coval
- Covers simulation, monitoring and human QA
- Unlimited seats on every plan
- HIPAA and SOC 2 Type II listed
- Trial requires a credit card
- Overage fees apply per minute
- Enterprise starts at $4,500 per month
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 Coval if you want:
- Covers simulation, monitoring and human QA
- Unlimited seats on every plan
- HIPAA and SOC 2 Type II listed
Watch out: trial requires a credit card.
LangSmith vs Coval FAQ
What is the difference between LangSmith and Coval?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Coval: Testing and evaluation platform for voice and chat AI agents. Both are models & apis tools.
Is LangSmith or Coval cheaper?
LangSmith has the lower starting price: about $39 a month, against $100 for Coval.
Do LangSmith and Coval have free plans?
LangSmith: Yes. Coval: No, 7-day trial.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Coval?
Coval is made by Coval.
Which should I choose, LangSmith or Coval?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Coval if you value covers simulation, monitoring and human qa and unlimited seats on every plan.