A agentindex
Comparison

Laminar vs Langfuse

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

Laminar

Open-source observability and eval for AI agents.

  • + Open source with a Rust core for performance
  • + Built-in eval and datasets
  • − Smaller community
  • − Newer project

Langfuse

The most-used open-source LLM observability tool.

  • + Open source and self-hostable
  • + Framework-agnostic via OpenTelemetry
  • − Self-hosting ClickHouse is operational work
  • − Eval features trail dedicated eval tools
Spec Laminar Langfuse
Category eval-observability eval-observability
License Apache-2.0 MIT
Open source Yes Yes
Self-hostable Yes Yes
MCP support No No
Pricing freemium freemium
Starting price Self-host free Self-host free; cloud tier
Models multi multi
Languages typescript, rust python, typescript
GitHub stars 3.0k 29.8k
Last activity 2026-06-25 2026-06-25