tools
LangGraph
LangGraph is an open-source framework for building stateful, controllable agents and multi-step workflows.
LangGraph lets developers define agent workflows as graphs with state, memory, persistence, streaming, and human approval steps. It supports deterministic and agentic components, multi-agent systems, and custom execution flows.
It is used by teams building long-running agents, business-process automation, conversational applications, and other LLM systems requiring control. The core library is free and MIT-licensed; hosted deployment, observability, and execution services are billed through LangSmith.
Features
- Build stateful, multi-step agent workflows as graphs
- Add human-in-the-loop approval and moderation steps
- Persist conversation history, checkpoints, and long-term memory
- Stream tokens, agent actions, and workflow events
- Compose single-agent, multi-agent, and hierarchical workflows
- Deploy through LangSmith Deployment or self-hosted infrastructure
- MIT-licensed open-source library
Use cases
- Build long-running business-process automation
- Create conversational agents with persistent memory
- Orchestrate workflows combining deterministic and agentic steps
- Add human approval to sensitive agent actions
- Deploy custom multi-agent applications
- Stream agent progress and actions to an application interface
Pros
Cons
Latest updates
- 2026-10-26 - LangSmith Cloud update
Workspace administration can be delegated by action instead of granting the broad workspaces:manage permission.
- 2026-10-19 - LangSmith Cloud update
The sidebar appears in every workspace, and example creation uses reference_outputs; outputs remains a deprecated alias.
- 2026-10-12 - LangSmith Cloud update
Added tracing-only API keys and ScaleDown operations and the Decisions model to the LLM Gateway.
- 2026-10-05 - LangSmith Cloud update
LangSmith Cloud adds AI search for runs, traces, and threads.
- The LangSmith MCP adds a query_runs tool that accepts the same parameters as the SDK’s client.runs.query() , including typed selects for costs, token breakdowns, and full inputs and outputs, with curs
query_runs accepts the SDK’s client.runs.query() parameters, with typed selects and cursor pagination; fetch_runs now returns costs and token counts.
Capabilities
Get it
Security
- SOC 2 Type II — “we've just received our annual SOC 2 Type II report” source
- SOC 2 — “we've just received our annual SOC 2 Type II report” source
- ISO 27001 — “We're glad to share that LangChain has achieved ISO/IEC 27001:2022 certification for our Information Security Management System (ISMS).” source
- GDPR — “Compliance SOC 2 Type II ISO 27001:2022 GDPR HIPAA” source
- HIPAA — “Compliance SOC 2 Type II ISO 27001:2022 GDPR HIPAA” source
- Data kept in the EU — “USA or Netherlands” source
Pricing
- Starting price
- $39/user/mo
- Prices checked
- 2026-10-24
Developer
Free
- Up to 5k base traces / mo, then pay-as-you-go
- Community support
- 1 seat
Plus
- $39 / seat per month
- Up to 10k base traces / mo included, then pay-as-you-go
- Access to Deployment, Engine, and more
- Add unlimited seats
Enterprise
Price on request
- Self-hosted and hybrid deployment options
- Custom SSO, ABAC, and RBAC
- Support SLA
- Custom seats and workspaces