Arize AI
LLM observability platform with tracing, evaluation, monitoring, and the open-source Phoenix framework.
About Arize AI
Arize AI is the leading LLM observability and evaluation platform for building reliable AI agents and applications. It provides tracing, evaluation with 50+ research-backed metrics, real-time monitoring, cost tracking, and safety guardrails, plus the open-source Phoenix framework.
Key Features
💰 Pricing
Free tier for Phoenix (open-source, 25K trace spans/month). Paid plans for Arize AX platform. Raised $70M Series C.
Frequently Asked Questions
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📊 Comparison vs Alternatives
| Feature | ||||
|---|---|---|---|---|
| Pricing | Freemium | Freemium | Freemium | Freemium |
| Rating | ⭐ 4.5 | ⭐ 4.8 | ⭐ 4.8 | ⭐ 4.6 |
| Free Tier | ✅ | ✅ | ✅ | ✅ |
| Popularity | 52% | 100% | 94% | 92% |
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