What does LangSmith cost?
$39 per seat per month, plus $0.50 per 1,000 traces.
Beam vs LANGCHAIN
Beam vs LangSmith
LangSmith is application observability: tracing and evaluation for LLM apps, priced at $39 per seat per month plus $0.50 per 1,000 traces. It overlaps Beam only on agent-step and token visibility. Beam is a local-first security tool for coding agents, free for up to 3 people and $20 per developer a month on Team.
Beam vs LangSmith, side by side
Details below are drawn from a September 2026 review of the AI agent security market. Some figures are vendor-sourced or analyst estimates, and this is a fast-moving space — check with each vendor before you buy. Composio details come from its own pricing and documentation pages as of October 2026.
| Beam | LangSmith (LangChain) | |
|---|---|---|
| What it is | Local-first activity monitor, policy enforcement, and pre-run scanner for AI coding agents, with a Sentinel browser extension for AI chats. | Commercial tracing and evaluation platform for LLM applications. |
| Monitoring | Shell commands, file changes, tool calls, network endpoints and browser actions from harnesses such as Claude Code, Codex and Cursor, plus Beam Sentinel checks on supported AI chat sites before send. Normalised into local NDJSON with risk flags and evidence attached. | Traces, agent steps and token spend for production AI applications. |
| Skill / MCP scanning | Yes. SKILL.md files and MCP configurations are scanned before you run them, using 11 heuristic patterns plus an MCP version-pin check. Workspace admins can also block an MCP server for the org or one user. | Not applicable — different category. |
| Blocking / enforcement | Yes. Workspace owners and admins set observe, advisory, or enforce policy. Enforce denies matching tool calls on Claude Code and Codex PreToolUse hooks. The Sentinel Chrome extension pauses or blocks high-risk browser sends and can hold a send after redacting live secrets. | Not applicable — observability rather than endpoint enforcement. |
| Individual use | Free for up to 3 people, and Pro for one person at $8/month. Team workspaces add owner/admin roles, org baselines, stricter member overrides and a control plane. | Per-seat pricing from $39/month. |
| Deployment | Local collector plus a workspace dashboard. Apple and Windows MDM. Sentinel Chrome extension for browser AI chats. Licensed self-hosted control plane for teams that need it on their own infrastructure. | Hosted. |
| Source / licence | AGPL-3.0 for the local CLI and collector; the multi-user control plane is proprietary. | Commercial. |
| Pricing | Free for up to 3 people. Pro $8/month for one person. Team $20 per developer and $5 per browser seat a month, billed yearly. | $39 per seat per month, plus $0.50 per 1,000 traces. |
LangSmith in numbers
As reported in our source research. Some figures are estimates.
- Pricing
- $39 per seat per month, plus $0.50 per 1,000 traces
- Aimed at
- Production AI applications
Where LangSmith does more
- Deep tracing and evaluation for LLM application development, tightly tied to the LangChain ecosystem.
- Published per-seat pricing for application tracing, which is a different product from Beam's team plans.
- Established product for a use case Beam does not serve at all.
Where Beam differs
- Beam's subject is the agent on a developer's machine and the commands it runs, not an application's call graph.
- Beam flags risky activity with evidence and scans skill files and MCP configs before use.
- Beam stores data locally with credentials redacted and no cloud telemetry by default.
Beam’s current gaps
- Enforce is hook-based: a native deny is wired for Claude Code and Codex PreToolUse. Cursor, Copilot CLI and Gemini currently get a deny note, not a verified block.
- Missing, unreadable or expired cached policy allows the action. Beam is not a fail-closed kernel sandbox or an in-silicon watchdog.
- Scanning is heuristic pattern matching. It produces false positives, misses novel phrasing, and is not a guarantee of safety.
- There is no SOC 2 report and no default SIEM forwarder. Kernel isolation like OpenShell remains a different layer.
Which one fits
If you are building and evaluating an LLM application, LangSmith is the right category. Beam is for a security question about a developer machine, not an application-quality question.
FAQ
Does LangSmith monitor coding agents on a laptop?
It is aimed at production AI applications rather than local coding-agent safety. That endpoint question is Beam's focus.
Does Beam replace tracing?
No. Beam records shell, file, network and tool activity locally for security review. It is not an evaluation or tracing platform.
See how Beam works
Beam is an early, local-first prototype. Read what it actually does today before comparing it further.