Arize AI alternatives
6 evaluation tools in the same lane as Arize AI, ranked by editorial score.
PH
Phoenix
Evaluation · Multi-model
7.0
Open-source LLM and agent observability platform with tracing, evals, and experimentation built on OpenTelemetry.
Freemium· AX Free: Free · AX Pro: $50 · AX Enterprise: Customllm-tracingagent-debugging
AA
Athina AI
Evaluation · Multi-model
8.1
Collaborative LLM evaluation and observability platform for teams shipping AI features to production.
Freemium· Starter free (10k logs/mo); Pro & Enterprise customllm-evaluationprompt-management
OP
Opik
Evaluation · Multi-model
7.3
Open-source LLM observability and evaluation platform for debugging and monitoring AI agents in production.
Freemium· Free open-source self-host; free Cloud tier (no card); Enterprise contact salesllm-tracingagent-evaluation
MA
Maxim AI
Evaluation · Multi-model
7.1
End-to-end evaluation, simulation, and observability platform for shipping production-grade AI agents.
Freemium· Developer: Free · Professional: $29 /seat /month · Business: $49 /seat /month · Enterprise: Customagent-evaluationllm-observability
FA
Fiddler AI
Evaluation · Fiddler Centor (proprietary evaluators)
7.1
Enterprise AI observability and guardrails platform for monitoring agents, LLMs, and ML models in production.
Enterprise· Free: Free · Developer: $0.002 per trace · Enterprise: Contact salesllm-observabilityagent-monitoring
PA
Parea AI
Evaluation · Multi-model
6.8
LLM evaluation, observability, and prompt management platform for teams shipping production AI apps.
Freemium· Free (2 seats, 3k logs/mo); Team $150/mo; Enterprise customllm-evaluationprompt-management