Tools
Arize Phoenix vs Helicone
Arize Phoenix or Helicone? Their plans monthly and yearly, the capabilities their makers state, security and latest updates, side by side — read from the makers' own pages.
In inglese
In short
- Both: Self-hosted, API, Traces and evaluates
- Only Arize Phoenix states: Command line
- Only Helicone states: Choice of models, Official SDKs
Arize Phoenix
Open-source platform for tracing, evaluating, and improving AI agents and LLM applications.
Plans
AX Free
Free
- 10 issues per month
- 25k spans per month
- 1 GB per month
- 15 days retention
- SaaS deployment
- Unlimited users and evals
AX Pro
- $50 per month
- 25 issues per month
- 50k spans per month
- 10 GB per month
- 30 days retention
- SaaS deployment
- Unlimited users and evals
AX Enterprise
Price on request
- Unlimited issues
- Custom span volume
- Custom ingestion volume
- Custom retention
- SaaS or Self-Hosted deployment
- Unlimited users and evals
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Command line — “Get Started Locally $ uvx arize-phoenix serve” source
- Self-hosted — “Self-host Phoenix and keep sensitive data on your own infrastructure.” source
- API — “Docs Quickstarts, API reference, and integration guides” source
- Traces and evaluates — “Phoenix shows every step your agent takes so you know what went wrong.” source
Security
- SOC 2 Type II — “Arize AI Announces SOC 2 Type II Certification” source
- SOC 2 — “Arize AI Announces SOC 2 Type II Certification” source
- ISO 27001 — “ISO/IEC 27001 Certified” source
- GDPR — “GDPR Compliant” source
- HIPAA — “HIPAA Compliant” source
- Data kept in the EU — “Arize AI: Support for EU Data Residency” source
Latest updates
- Get Alyx help tailored to your experience
Alyx adapts how it helps based on your experience level in each part of Arize AX.
- Pick up where you left off with Alyx long-term memory
Alyx remembers context across conversations, including preferences, goals, project and asset learnings, team conventions, and decisions.
- Add and annotate entire sessions and traces in annotation queues
Send sessions and traces to an annotation queue and review them at session or trace granularity.
Helicone
Helicone routes, monitors, debugs, and analyzes AI applications through an open-source gateway and observability platform.
Plans
Hobby
Free
- 10,000 free requests
- 1 GB storage
- 1 seat, 1 organization
Pro
- $79 per month
- Everything in Hobby
- Unlimited seats
- Alerts & reports
- HQL (Query Language)
Team
- $799 per month
- Everything in Pro
- 5 organizations
- SOC-2 & HIPAA compliance
- Dedicated Slack channel
Enterprise
Price on request
- Everything in Team
- Custom MSA
- SAML SSO
- On-prem deployment
- Bulk cloud discounts
Prices checked 2026-09-25 on the maker’s page.
Capabilities
- Choice of models — “Request Routing : Route by model, cost, or custom rules” source
- Self-hosted — “Now you can deploy our powerful observability platform directly within your own infrastructure with a single Docker command.” source
- API — “With this setup, any calls to the OpenAI Responses API will be automatically logged and monitored by Helicone.” source
- Official SDKs — “We’re thrilled to announce that we now have a Go SDK for Helicone’s Helpers Package .” source
- Traces and evaluates — “Built-in Observability : Full integration with Helicone’s analytics” source
Latest updates
- Claude Sonnet 4 and Sonnet 4.5 now support 1M context window
Sonnet 4 and Sonnet 4.5 models on the AI Gateway now support a 1M token context window by default across Anthropic API, AWS Bedrock, and Google Vertex AI.
- Control Reasoning Effort in Playground and better feedback on thinking models
Added the reasoning effort parameter, a minimal option, existing reasoning levels, and visual reasoning display when available.
- OpenAI GPT-5 Models Pricing and Playground Support
Added pricing for GPT-5, GPT-5-Mini, GPT-5-Nano, and GPT-5-Chat-Latest models across multiple providers.