Phoenix Pricing 2026
Plans, hidden costs, and alternatives compared
Cite this data: Toolradar, Phoenix pricing verified Oct 2026, toolradar.com/tools/phoenix/pricing
Phoenix starts at $50/month on the AX Pro plan.
Verified Oct 2026 from the official pricing page.
Is Phoenix worth the price?
Phoenix offers a very generous free tier with its open-source solution and a substantial free tier for AX, making it highly accessible.
The AX Pro tier at $50/month provides good value for growing teams needing more capacity. This pricing structure is best for individual developers and small to medium-sized teams focused on AI product evaluation and optimization.
Pricing Plans
Phoenix Small teams and smaller data
Free & open source
- Trace spans user managed
- Ingestion volume user managed
- Projects user managed
- Retention user managed
- Support add-on dedicated support
AX Free
Free
- 25k trace spans per month
- 1 GB ingestion volume per month
- 7 days retention
- Alyx (Arize agent)
- Online evals
- Product observability (monitors & custom metrics)
- Community support
AX Pro
$50 / month
- 50k trace spans per month
- 10 GB ingestion volume per month
- 15 days retention
- Everything in AX Free
- Higher rate limits
- Longer retention
- Email support
AX Enterprise
Custom
- Custom trace spans
- Custom ingestion volume
- Custom projects
- Configurable retention
- Everything in AX Pro
- Dedicated support
- Uptime SLA
- Custom data limits
- SOC2 reports and HIPPA
- Training sessions
- DataFabric Connect
- Self-Hosting add-on
- Data residency
- Multi-region deployments
Hidden Costs & Gotchas
Overage fees for exceeding trace spans/ingestion
Add-ons for dedicated support
Self-hosting is an add-on
How Phoenix compares
4 of 5 direct competitors offer a free plan.
| Tool | Starting price | Free plan |
|---|---|---|
| Phoenix | $50/month, billing unit not specified | Yes |
| LangSmith | $39/seat/month | Yes |
| Weights & Biases | $60/month, billing unit not specified | Yes |
| Comet ML | $19/user/month | No |
| OpenLLMetry | Contact sales | Yes |
| Helicone | $100/month, billing unit not specified | Yes |
Phoenix Pricing FAQ
How much does Phoenix cost?
Phoenix starts at $50/month on the AX Pro plan. A free plan is also available.
Does Phoenix have a free plan?
Yes. Phoenix offers a free plan called "Phoenix Small teams and smaller data". It includes: Trace spans user managed, Ingestion volume user managed, Projects user managed.
What are alternatives to Phoenix?
Alternatives to Phoenix include LangSmith, Weights & Biases, Comet ML, OpenLLMetry. LangSmith starts at $39/seat/month; Weights & Biases starts at $60/month, billing unit not specified; Comet ML starts at $19/user/month.
Phoenix alternatives
Direct competitors. Starting prices match the table above.
Sources
- Official Phoenix pricing: phoenix.arize.com/pricing (verified Oct 2026)
- Cite this data: Toolradar, Phoenix pricing verified Oct 2026, toolradar.com/tools/phoenix/pricing
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