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
Category eval-observability eval-observability
License MIT Elastic-2.0
Open source Yes Yes
Self-hostable No Yes
MCP support No No
Pricing freemium free
Starting price Free tier Self-host free
Models multi multi
Languages python, typescript python, typescript
GitHub stars 5.6k 10.3k
Last activity 2026-06-25 2026-06-25