A agentindex
Comparison

AgentOps vs Arize Phoenix

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

AgentOps

Observability built specifically for AI agents.

  • + Agent-session mental model fits agentic apps
  • + Easy SDK integration
  • − Cloud-only currently
  • − Newer and less mature than incumbents

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
Spec AgentOps Arize Phoenix
Role Observability Observability
Tags observability, evaluation, persona-data-scientist, persona-platform-engineer observability, evaluation, persona-data-scientist, persona-platform-engineer
License MIT Elastic-2.0
Open source Yes Yes
Self-hostable No Yes
MCP support No No
Pricing freemium free
Price Free tier Free tier
Usage cost No model cost No model cost
Models multi multi
Languages python, typescript python, typescript
GitHub stars 5.7k 10.4k
Last activity 2026-06-25 2026-07-04