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 per 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
Enterprise features are custom priced
Which Plan Do You Need?
AI developers and researchers
Small to medium AI teams
Teams needing LLM observability
How Phoenix Compares to Competitors
Compared to similar LLM observability platforms like LangChain Hub (which has a free tier but scales quickly), Phoenix's AX Pro at $50/month offers a competitive amount of trace spans and ingestion volume. While some platforms might offer more features in their free tiers, Phoenix's open-source option provides unparalleled flexibility and cost control for those willing to self-manage.
Phoenix Pricing FAQ
How much does Phoenix cost?
Phoenix starts at $50/month on the AX Pro plan. A free plan is also available with limited features.
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.
Is there a cheaper alternative to Phoenix?
Yes. Popular alternatives to Phoenix include OpenTelemetry, Jaeger, SigNoz, Uptrace. Free alternatives include OpenTelemetry, Jaeger, SigNoz. Compare them side-by-side on Toolradar.
Cheaper alternatives to Phoenix
Direct competitors with similar features. Many offer free tiers or lower per-seat pricing.
