Arize AI vs Helicone: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Arize AI and Helicone side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Arize AI
The AI & Agent Engineering Platform for LLM observability, evaluation, and development.
Best for you if:
- • You want a tool that provides a comprehensive, unified platform for the entire AI lifecycle from development to production
Helicone
Build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis.
Best for you if:
- • You want to build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis
| At a Glance | Arize AI | Helicone |
|---|---|---|
Starts at | Free plan, paid from $50/mo, billed monthly AX Pro plan | Free plan, paid from $79/mo flat, billed monthly Pro plan |
Category | AI Observability AI Agents | AI Observability API Tools |
Rating | 4.3/5 G2 4.3 48 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | Self-hosting is an Enterprise add-on | Potential overage fees if exceeding Pro tier limits |
Choose Arize AI or Helicone?
Choose Arize AI if
- You want a tool that provides a comprehensive, unified platform for the entire AI lifecycle from development to production
- You want a tool that offers advanced evaluation capabilities like LLM-as-a-Judge and human annotation for robust AI
Choose Helicone if
- You want to build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis
In-Depth Analysis
Arize AI
The AI & Agent Engineering Platform for LLM observability, evaluation, and development.
Arize AI offers a generous free tier (AX Free) and an open-source option (Phoenix), making it highly accessible for individual developers and small teams.
Watch out
Self-hosting is an Enterprise add-on
Strengths
- Pro: Provides a comprehensive, unified platform for the entire AI lifecycle from development to production.
- Pro: Offers advanced evaluation capabilities like LLM-as-a-Judge and human annotation for robust AI.
- Pro: Built on open standards and open-source components, promoting transparency and flexibility.
- Pro: Includes an AI assistant (Alyx) to aid in debugging and accelerate development.
- Pro: Scalable for enterprise use with features like custom data limits, SOC2, and HIPAA compliance.
Weaknesses
- Con: The complexity of features might have a learning curve for new users.
- Con: Pricing for higher tiers is custom, which may require direct engagement with sales.
- Con: Specific limitations on trace spans and ingestion volume for free and lower-paid tiers.
Key features
Helicone
Build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis.
It's best for developers and small to medium-sized businesses building and scaling AI applications.
Watch out
Potential overage fees if exceeding Pro tier limits
Strengths
- Pro: LLM observability
- Pro: Request logging
- Pro: Cost tracking
- Pro: Good for AI apps
- Pro: Fair pricing
Weaknesses
- Con: Newer platform
- Con: Limited features
- Con: Still maturing
- Con: Integration effort
- Con: Documentation improving
Key features
Plans and prices: Arize AI vs Helicone
| Tool | Plans and prices | Source |
|---|---|---|
| Arize AI |
| arize.com/pricing read Nov 9, 2026 |
| Helicone |
| helicone.ai/pricing read Nov 12, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Arize AI pricing and Helicone pricing.
Key Takeaways
Arize AI
- Worth considering for AI observability
Helicone
- Choose Helicone if you want to build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Only Arize AI has a published user rating (4.3/5 from 48 reviews); Helicone has none we can show.
- Entry prices are not ranked, they are charged on different bases: Arize AI $50/mo, billed monthly; Helicone $79/mo flat, billed monthly.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Arize AI and Helicone compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Only Arize AI has a published user rating (4.3/5 from 48 reviews); Helicone has none we can show. Entry prices are not ranked, they are charged on different bases: Arize AI $50/mo, billed monthly; Helicone $79/mo flat, billed monthly. Both have a free plan.
What are Arize AI and Helicone used for?
Arize AI: The AI & Agent Engineering Platform for LLM observability, evaluation, and development. Helicone: Build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis.
What does Arize AI cost vs Helicone?
Arize AI's cheapest paid plan is AX Pro at $50/mo, billed monthly; it also has a free plan. Helicone's cheapest paid plan is Pro at $79/mo flat, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Nov 12, 2026.
What's the main difference between Arize AI and Helicone?
Arize AI's main strength: provides a comprehensive, unified platform for the entire AI lifecycle from development to production. Helicone's main strength: LLM observability.
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