A agentindex
Comparison

Arize Phoenix vs Latitude

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

Arize Phoenix

Open-source LLM tracing and eval.

  • + Open source with OTel foundations
  • + Good LLM-as-a-judge evals built in
  • − Elastic license restricts some hosted offerings
  • − Enterprise features in the paid Arize cloud

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 Arize Phoenix Latitude
Category eval-observability eval-observability
License Elastic-2.0 LGPL-3.0
Open source Yes Yes
Self-hostable Yes Yes
MCP support No No
Pricing free freemium
Starting price Self-host free Self-host free
Models multi multi
Languages python, typescript typescript
GitHub stars 10.3k 4.3k
Last activity 2026-06-25 2026-06-25