Arize Phoenix Pricing

freemiumopen source · Elastic Licenselast verified August 29, 2026official site ↗

Plan	Price	Notes
Phoenix Open Sourceofficial source ↗	$0checked 2026-08-29	Free open-source self-hosted observability and evaluation under Elastic License 2.0; unlimited local spans, traces, evaluations, and prompt playgrounds
AX Freeofficial source ↗	$0checked 2026-08-29	Cloud-managed SaaS: 10 signal issues/month, 25,000 trace spans/month, 1 GB data ingestion/month, 15-day retention, unlimited users and experiments
AX Proofficial source ↗	USD 50/month · per organizationchecked 2026-08-29	$50/month; cloud-managed SaaS: 25 signal issues/month, 50,000 trace spans/month, 10 GB data ingestion/month, 30-day retention, unlimited users and evaluation queues
AX Enterpriseofficial source ↗	Customchecked 2026-08-29	Custom trace spans, scalable data ingestion and retention, SaaS or dedicated VPC/Self-Hosted deployment, SSO/SAML, custom SLAs, dedicated enterprise support

structured from cited official pricing sources: “Arize Phoenix is 100% free and open-source for self-hosted local and private cloud tracing under Elastic License 2.0. Managed Arize AX SaaS offers a Free tier with 25k spans/month and 15-day retention, an AX Pro tier at $50/month with 50k spans/month and 30-day retention, and an AX Enterprise plan with custom data volume, VPC deployment, and enterprise SLAs.”

Self-hosting cost

Arize Phoenix is open source under the Elastic License license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage. Any hosted, managed, or API plans remain separately priced.

Free & cheaper AI Monitoring & Observability

same category, free plan or open-source license

OpenLITopen source100% free and open source under the Apache-2.0 license ($0 self-hosted on Docker and Kubernetes). Features OpenTelemetry-native LLM tracing, GPU hardware metrics (NVIDIA/AMD/Intel), Prompt Hub, and security guardrails. Managed OpenLIT Cloud edition is available for hosted enterprise deployments.Grafanaopen sourceGrafana is free and open-source under AGPL-3.0 for self-hosting. Grafana Cloud features a generous free tier (10k metrics series, 50GB logs/traces) and a Pro tier starting at $19/month plus pay-as-you-go usage.Latitudeopen sourceLatitude is an open-source AI agent observability and evaluation platform under the MIT license. It offers a free self-hosted edition and a free cloud Starter tier (20,000 credits/mo), alongside a Pro plan at $99/month for growing teams and custom Enterprise pricing.Judgevalopen sourceJudgeval is an open-source Python SDK (Apache-2.0) for AI agent evaluation and tracing. Judgment Labs offers hosted enterprise agent behavior monitoring and evaluation platform access via custom quotes.

Arize Phoenix overview →alternatives →review: 87/100 →

FAQ

How much does Arize Phoenix cost?

Arize Phoenix is 100% free and open-source for self-hosted local and private cloud tracing under Elastic License 2.0. Managed Arize AX SaaS offers a Free tier with 25k spans/month and 15-day retention, an AX Pro tier at $50/month with 50k spans/month and 30-day retention, and an AX Enterprise plan with custom data volume, VPC deployment, and enterprise SLAs. Paid pricing starts at $50/month.

Does Arize Phoenix have a free plan?

Yes — Arize Phoenix has a free plan alongside its paid tiers.

Can you self-host Arize Phoenix for free?

What are free or cheaper Arize Phoenix alternatives?

OpenLIT, Grafana, Latitude are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified August 29, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.