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B
Arize Phoenix
Open-source AI observability and evaluation.
Pricing
Phoenix open source free; Arize AX Free $0, Pro $50/mo, Enterprise custom.
Free tier
Yes
Why B tier
Solid open-source tracing and evals.
Community rating
Separate from our editorial tier. Email-confirmed, one per person.
Not enough ratings yet
Last verified: 2026-10-15 against the official pricing page. Prices change, so confirm before buying.Official site →
