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Head to head · 2026

Activeloop vs Arize

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

Activeloop

Database built for AI workloads that stores and streams multimodal training data, embeddings, images, video, and…

4.1$40/mo

Visit Activeloop (opens Activeloop in a new tab)

Arize

Grew from traditional ML monitoring into a $1B+ AI engineering platform for evaluating agents in production

4.2Not listed

Visit Arize (opens Arize in a new tab)

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

  • Lower starting price

    Not comparable

    Not comparable: Arize does not list a price

  • Free plan

    Activeloop

    Only Activeloop has one

  • Higher rating

    Arize

    4.1 against 4.2

  • Same job?

    Yes

    Both are AI Infrastructure & Agent Tooling tools

Side by side

Compared onActiveloopArize
Our rating4.14.2Better
Starts at$40/moNot listed
Free planYesBetterNo
CategoryAI Infrastructure & Agent ToolingAI Infrastructure & Agent Tooling
PlansFrom $40/moSee pricing
Key features
  • Open-core database purpose-built for multimodal AI training data
  • Built-in dataset versioning and visualization
  • Streaming access to public and private datasets for model training
  • API access for programmatic dataset management
  • Free tier for individual researchers and small projects
  • Started in traditional ML drift and performance monitoring before expanding to LLMs
  • Open-source Arize Phoenix framework for generative AI observability
  • LLM evaluation and prompt versioning through a Prompt Hub
  • Tracing built for multi-step, conversational agent applications
  • $131M raised, valued at over $1 billion as of its February 2025 Series C
Pros
  • Open-source core (Deep Lake) lets teams self-host and inspect the code
  • Real enterprise customers in regulated sectors, not only startups
  • Y Combinator-backed with institutional Series A funding
  • Covers both traditional ML monitoring and generative AI evaluation in one platform
  • Open-source Phoenix framework gives a free, inspectable starting point before adopting the full platform
  • Billion-dollar valuation and $131M raised signal real staying power
Cons
  • Free tier's 3 queries/day and 100MB storage cap suit only small experiments
  • Pro plan's per-user, per-overage pricing can get higher-priced at scale
  • Narrower use case than general-purpose vector databases, so a smaller ecosystem of integrations
  • Enterprise pricing isn't published, so budgeting requires a sales conversation
  • Broad scope spanning classic ML and generative AI can mean more setup than a single-purpose LLM tool
  • Competes directly against well-funded peers like Braintrust and LangSmith in a crowded observability market
CompanyActiveloop, founded 2018Arize AI, founded 2020

Prices come from each vendor's pricing page, last checked 20260808. Check the vendor before you buy.

FAQ

Questions people ask

Is Activeloop better than Arize?

In our reviews Activeloop scores 4.1 and Arize scores 4.2. The better pick depends on the job. Activeloop: Database built for AI workloads that stores and streams multimodal training data, embeddings, images, video, and text, at scale. Arize: Grew from traditional ML monitoring into a $1B+ AI engineering platform for evaluating agents in production.

Which is cheaper, Activeloop or Arize?

Activeloop: from $40/mo. Arize: see pricing.

Do Activeloop and Arize have free plans?

Only Activeloop has a free plan.

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