Braintrust vs Arize Phoenix
Ai Observability pricing comparison · 2026
Braintrust pricing ranges from $0–$1000/month, while Arize Phoenix ranges from $0–$1000/month. Arize Phoenix is typically 80% more affordable, though your actual cost depends on tier and team size.
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Braintrust and Arize Phoenix both operate in the ai observability category. This page compares their published pricing.
Plan-by-Plan Pricing
| Plan | Braintrust | Arize Phoenix |
|---|---|---|
| Starter | Free /month | Free /month |
| Pro | $249 /month | Free /month |
| Enterprise | Custom | $50 /month |
| AX Enterprise | — | Custom |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Braintrust
3 scenarios$0/month
Solo Developer or Small Team
$249/month ($2,988/year)
Growing AI Team on Pro
Custom — contact sales
Enterprise Deployment
Arize Phoenix
6 scenarios$0/month
Solo Developer — Self-Hosted Open Source
$50/month
Small Team — AX Pro Hosted
Custom — contact Arize
Enterprise Team — AX Enterprise