kitio.aiLangSmith vs Adaptive ML
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. LangSmith starts at $39/mo and Adaptive ML 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
- RL-based model tuning
- LLM evaluation
- Model serving
- Open model specialization
- Enterprise deployment
| Feature | LangSmith | Adaptive ML |
|---|---|---|
| Best for | Tracing, evaluation and deployment platform for LLM agents | Tune, evaluate and serve specialized LLMs with reinforcement learning |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Paid |
| Starting price | $39/mo | See pricing page |
| Free plan | Yes | No |
| Made by | LangChain | Adaptive ML |
| Based in | United States | France |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
LangSmith starts at $39/mo and Adaptive ML 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
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
Adaptive ML
- Lets smaller models match larger ones
- Evaluation and serving in one place
- You own the tuned models
- Acquired by Datadog, roadmap unclear
- No public pricing
- Needs ML expertise to use well
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 Adaptive ML if you want:
- Lets smaller models match larger ones
- Evaluation and serving in one place
- You own the tuned models
Watch out: acquired by datadog, roadmap unclear.
LangSmith vs Adaptive ML FAQ
What is the difference between LangSmith and Adaptive ML?
LangSmith: Tracing, evaluation and deployment platform for LLM agents. Adaptive ML: Tune, evaluate and serve specialized LLMs with reinforcement learning. Both are models & apis tools.
Is LangSmith or Adaptive ML cheaper?
LangSmith starts at $39/mo and Adaptive ML starts at See pricing page. Check both pricing pages for current plans.
Do LangSmith and Adaptive ML have free plans?
LangSmith: Yes. Adaptive ML: No.
Who makes LangSmith?
LangSmith is made by LangChain, based in United States.
Who makes Adaptive ML?
Adaptive ML is made by Adaptive ML, based in France.
Which should I choose, LangSmith or Adaptive ML?
Choose LangSmith if you value detailed agent traces and strong langgraph integration. Choose Adaptive ML if you value lets smaller models match larger ones and evaluation and serving in one place.