A agentindex
Comparison

Fiddler vs Laminar

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

Fiddler

AI observability and governance for enterprise.

  • + Strong governance and compliance story
  • + Good for regulated enterprise
  • − Enterprise-priced
  • − Heavier than dev-focused tools

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
Spec Fiddler Laminar
Role Observability Observability
Tags observability, guardrails, persona-platform-engineer observability, evaluation, persona-data-scientist, persona-platform-engineer
License Proprietary Apache-2.0
Open source No Yes
Self-hostable No Yes
MCP support No No
Pricing paid freemium
Price Custom Free tier
Usage cost No model cost No model cost
Models multi multi
Languages python typescript, rust
GitHub stars — 3.1k
Last activity — 2026-07-03