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, and it publishes no pricing at all today.
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.
| Beam | LangSmith (LangChain) | |
|---|---|---|
| What it is | Local-first activity monitor and pre-run scanner for AI coding agents. Early prototype. | 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, 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. | Not applicable — different category. |
| Blocking / enforcement | No. Beam observes and flags. It never allows or denies an action. | Not applicable — observability rather than endpoint enforcement. |
| Individual use | Runs locally for one person on one machine. Shared teams, fleet rollout and approvals are not built yet. | Per-seat pricing from $39/month. |
| Deployment | A local collector plus a local interface. No MDM package, no central console, no SSO, no SOC 2, no SIEM forwarding. | Hosted. |
| Source / licence | Not open source today. | Commercial. |
| Pricing | Not published. | $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.
- Transparent published pricing, which Beam does not have.
- 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
- Beam observes and flags. It has no blocking or enforcement, so it cannot stop a destructive command.
- There is no MDM package, central console, SSO or SOC 2 report, so it is not ready for a managed fleet rollout.
- Scanning is heuristic pattern matching. It produces false positives, misses novel phrasing, and is not a guarantee of safety.
- Beam is early and has no published pricing. Every tool on this page is further along in at least one dimension.
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.