A agentindex
Comparison

LangSmith vs Latitude

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

LangSmith

LangChain's observability and eval platform.

  • + Best-in-class when you already use LangChain
  • + Strong tracing UX
  • − Proprietary and cloud-only
  • − Vendor lock-in to LangChain

Latitude

Open-source prompt management and eval.

  • + Strong prompt-management workflow for teams
  • + Open source and self-hostable
  • − Eval features secondary to prompt management
  • − Smaller community
Spec LangSmith Latitude
Category eval-observability eval-observability
License Proprietary LGPL-3.0
Open source No Yes
Self-hostable No Yes
MCP support No No
Pricing freemium freemium
Starting price Free developer tier Self-host free
Models multi multi
Languages python, typescript typescript
GitHub stars — 4.3k
Last activity — 2026-06-25