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Head-to-head · Llm Monitoring

Arize AX vs Helicone

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Arize AX #4 in Llm Monitoring 8.8/10 Free plan Free plan✓ 2 of 3 features Visit Arize AX
Helicone #8 in Llm Monitoring 8.4/10 Free plan · 7-day trial Free planFree trial✓ 2 of 3 features Visit Helicone

Arize AX leads on 1 check, Helicone on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreArize AX · 8.8/10
  • Lowest starting priceArize AX · $50/mo
  • Free planboth
  • Free trialonly Helicone

Arize AX scores higher on our rubric for llm monitoring: 8.8 against 8.4 out of 10; our editors rank them #4 and #8.

Arize AX is cheaper to start at $50/mo against $79/mo.

Arize AX is the better fit for teams needing RAG diagnostics and agent evaluations. Helicone is the better fit for teams needing a model gateway with observability.

  • Arize AX fits best

    Teams needing RAG diagnostics and agent evaluations

  • Helicone fits best

    Teams needing a model gateway with observability

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Arize AX 8.8/10 Visit ↗ Helicone 8.4/10 Visit ↗
At a glance
Editor score 8.8 8.4
Ranking #4 in Llm Monitoring #8 in Llm Monitoring
Best for Teams needing RAG diagnostics and agent evaluations Teams needing a model gateway with observability
Pricing model Free plan + paid Free plan + paid
Starting price $50/mo (best) $79/mo
Free plan ✓ ✓
Free trial — 7 days
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Email, Community, Docs Email, Community, Docs
Compliance SOC 2, GDPR, HIPAA, SSO/SAML SOC 2, HIPAA, SSO/SAML
Integrations 18 integrations 10 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Arize AX 2/3 · Helicone 2/3
LLM tracing ✓ ✓
Evaluation support ✓ ✓
Alerts Not checked yet Not checked yet
Specs
Deployment options Both Both
Trace retention Not checked yet Not checked yet
LLM providers Not checked yet Not checked yet
Our review
Pros
  • Combines retrieval tracing with retrieval-quality diagnostics.
  • Evaluates LLMs, agents, sessions, and traces using several evaluator types.
  • Free and Pro plans include unlimited users and evaluations.
  • Routes requests to 100+ models through an OpenAI-compatible gateway
  • Combines tracing, prompt management, evaluations, and cost analytics
  • Offers cloud or Docker-based self-hosted deployment
Cons
  • AX Free caps usage at 25,000 trace spans and 1 GB ingestion per month.
  • AX Pro includes 30-day retention and caps monthly ingestion at 10 GB.
  • Self-hosted deployment is offered only on Enterprise, with custom pricing.
  • Pro starts at $79/month, with usage-based pricing also applying
  • Hobby limits usage to 10,000 requests and storage to 1 GB
  • The free plan is limited to one seat and one organization
Our verdict

Arize AX is an AI engineering platform for teams building and monitoring AI agents and applications. It captures production traces, helps surface recurring issues, and supports quality evaluations and experiments comparing prompts, models,…

Read the review →

Helicone brings model routing and LLM observability into one platform for developers and teams building AI applications. Its OpenAI-compatible gateway supports 100+ models, while request logging and dashboards cover requests, sessions,…

Read the review →
  1. Arize AXLlm Monitoring 8.8Free plan
  2. HeliconeLlm Monitoring 8.4Free plan · 7-day trial

Strengths and trade-offs

  • Arize AX — where it wins

    • Combines retrieval tracing with retrieval-quality diagnostics.
    • Evaluates LLMs, agents, sessions, and traces using several evaluator types.
    • Free and Pro plans include unlimited users and evaluations.

    Where it doesn't

    • AX Free caps usage at 25,000 trace spans and 1 GB ingestion per month.
    • AX Pro includes 30-day retention and caps monthly ingestion at 10 GB.
    • Self-hosted deployment is offered only on Enterprise, with custom pricing.

  • Helicone — where it wins

    • Routes requests to 100+ models through an OpenAI-compatible gateway
    • Combines tracing, prompt management, evaluations, and cost analytics
    • Offers cloud or Docker-based self-hosted deployment

    Where it doesn't

    • Pro starts at $79/month, with usage-based pricing also applying
    • Hobby limits usage to 10,000 requests and storage to 1 GB
    • The free plan is limited to one seat and one organization
  • Arize AX8.8/10 · Free plan

    A broad monitoring toolkit with RAG diagnostics, agent evaluations, and a free tier.

    Visit Arize AXFull verdict →
  • Helicone8.4/10 · Free plan · 7-day trial

    A model gateway paired with tracing, prompt workflows, evaluations, and cost analytics.

    Visit HeliconeFull verdict →

More comparisons

All llm monitoring comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update