LangChain
Observe, Evaluate, and Deploy Reliable AI Agents
- Also known as
- langchain
What is LangChain?
LangSmith is an all-in-one developer platform for building, observing, evaluating, and deploying LLM-powered agents across the application lifecycle. Framework-agnostic with support for multiple SDKs (Python, TypeScript, Go, Java) and model providers.
LangChain pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free Developer plan, Plus at $39/seat/month, Enterprise custom pricing. All plans include metered usage charges: LCU $1.50, LSU $1.00.
Developer
FreeFor solo users getting started
- seats
- 1
- base_traces
- 5k/mo
- Up to 5k base traces/mo
- Pay-as-you-go for additional traces
- Community support
- 1 seat
- Observability & Evaluation
Plus
For teams building and deploying agents
- seats
- unlimited
- base_traces
- 10k/mo
- Up to 10k base traces/mo
- Unlimited seats
- Access to Deployment, Engine, and more
- 25 LCU Fleet usage/mo included
- 1 free Serverless deployment included
Enterprise
Contact salesFor teams with advanced hosting, security, and support needs
- Custom pricing
- Custom trace volume
- Self-hosted and hybrid deployment options
- Custom SSO, ABAC, and RBAC
- Support SLA
- Custom seats and workspaces
What LangChain does
The capabilities that matter for mlops & llmops tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Tool role
- End-to-end ML platform
- Self-hostable / OSS core
- ✓
- Managed cloud available
- ✓
- On-prem / VPC deployment
- ✓
- LLM tracing / observability
- ✓
- Evaluation (offline / LLM-judge / human)
- ✓
- Prompt management + versioning
- ✓
- Experiment tracking / model registry
- ✓
- Model serving / inference endpoint
- -
- OpenTelemetry / OpenLLMetry compatible
- ✓
- Framework-agnostic
- ✓
- Multi-provider model support
- ✓
- No-train-on-customer-data guarantee
- Unknown
Platform & deployment
Independently observed- CLI
- Web
- Cloud / SaaS
- Hybrid
- Self-hosted
Integrations (4)
Independently observed- OpenAI
- Anthropic
- OpenTelemetry
LangChain alternatives
Other mlops & llmops tools we track, ranked by the same independent score.
- OllamaThe easiest way to build with open modelslow · 22%
- OllamaThe easiest way to build with open modelslow · 45%
- BasetenInference is everythinglow · 47%
- PortkeyProduction Stack for Gen AI Builderslow · 46%
- MLflowOpen Source AI Platform for Agents, LLMs & Modelslow · 47%
- Weights & BiasesThe AI developer platformlow · 25%
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for LangChain, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 100 | 32.00 | 3200.0 | ✓ |
| Package Downloads | 84 | 26.00 | 2175.4 | ✓ |
| Pricing Transparency | 100 | 16.00 | 1600.0 | ✓ |
| Github Activity | 63 | 18.00 | 1135.8 | ✓ |
| Security Posture | 80 | 12.00 | 960.0 | ✓ |
| Price Level | 80 | 10.00 | 800.0 | ✓ |
| Reliability | 50 | 12.00 | 600.0 | ✓ |
| Github Stars | 97 | 5.00 | 486.4 | ✓ |
| Integrations | 20 | 18.00 | 361.8 | ✓ |
| Release Cadence | 0 | 10.00 | 0.0 | - |
| Stackoverflow Activity | 0 | 12.00 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-08-03 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"role":"platform","evaluation":true,"managed_cloud":true,"self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"no_train_on_data":"unknown","llm_observability":true,"prompt_management":true,"framework_agnostic":true,"experiment_tracking":true} | mediumsource · 2026-08-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 4 | mediumsource · 2026-08-03 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-08-03 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-08-03 · 99% |
Pricing
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-03 · 60% |