Head-to-head

EvalGuard vs LangSmith (LangChain). 

Closed-source SaaS for the LangChain ecosystem — tracing, evals, prompt hubLangSmith is LangChain Inc's closed-source observability + eval SaaS. Strongest in deep LangChain integration, prompt-response cluster visualization (Insights Agent), online evals on production traffic, and a 4-language SDK quartet. No red-team library, no runtime firewall, closed-source. Tightly coupled to the LangChain framework — reduced value if you're not on LangChain.

9
EvalGuard wins
·
3
Ties
·
2
LangSmith (LangChain) wins

Competitor data (GitHub stars, downloads, feature counts, funding / acquisition status) verified as of 2026-04-28. EvalGuard's own counts are sourced live from the drift-checked registry.

Coverage at a glance

EvalGuard vs LangSmith (LangChain), by the numbers

Where both platforms publish a number, here's the gap. Our values come straight from the drift-checked registry; LangSmith (LangChain)'s are quoted as published.

Attack Plugins
EvalGuard0
LangSmith (LangChain)0
Compliance Frameworks
EvalGuard0
LangSmith (LangChain)0
FeatureEvalGuardLangSmith (LangChain)
Attack Plugins2490
Eval Scorers188 built-inCustom + LLM-as-judge
Online Evals (production sampling)Roadmap (Tier A)Yes (their strength)
Prompt-response cluster vizRoadmap (Tier A)Yes (Insights Agent)
LLM Providers91 typed registryVia LangChain integrations
Compliance Frameworks33SOC 2, ISO 27001
LLM Firewall5-layer, 2.57ms p95No
Red Team SuiteYes (249 plugins)No
Polyglot SDKs (TS, Python, Go)Yes — 3 publishedYes (matched)
Prompt Versioning IDEYesYes (Prompt Hub)
Agent TracingOpenTelemetry (vendor-neutral)Custom (LangChain-tied)
Open SourceApache 2.0Closed-source SaaS
Self-hostedYes (Docker + Helm)Enterprise tier only
Framework lock-inVendor-neutralLangChain ecosystem

Why choose EvalGuard over LangSmith (LangChain)

  • Vendor-neutral OpenTelemetry tracing — LangSmith is tightly coupled to LangChain framework conventions
  • Open source (Apache 2.0) + self-hostable on Docker/Helm — LangSmith reserves self-hosting for Enterprise tier
  • 249 attack plugins + 5-layer firewall — LangSmith has no red-team or runtime protection layer
  • 33 compliance frameworks built-in — LangSmith has SOC 2 + ISO 27001 only
  • 188 built-in scorers — LangSmith requires custom scorer authoring or LLM-as-judge

Where LangSmith (LangChain) leads

  • LangSmith ships prompt-response cluster visualization (Insights Agent) today — we have it on the Tier A roadmap
  • Online evaluation on production traffic with sampling is a LangSmith strength — also on our Tier A roadmap
  • Deep native integration with LangChain primitives — for LangChain-heavy stacks, that integration depth is real value
  • Enterprise SLAs and dedicated support backed by LangChain Inc's Series A funding

Ready to switch from LangSmith (LangChain)?

Start free. No credit card required. Migrate in minutes.

Get Started FreeView All Comparisons