Activeloop vs Defined.ai (2026): Pricing, Features & Which to Choose

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: Defined.ai does not list a price
Free plan
Activeloop
Only Activeloop has one
Higher rating
Activeloop
4.1 against 3.6
Same job?
Yes
Both are AI Infrastructure & Agent Tooling tools

Side by side

Compared on	Activeloop	Defined.ai
Our rating	4.1Better	3.6
Starts at	$40/mo	Not listed
Free plan	YesBetter	No
Category	AI Infrastructure & Agent Tooling	AI Infrastructure & Agent Tooling
Plans	From $40/mo	See 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	Datasets across audio, image, video, text, and multimodal formats Custom data collection across 150+ countries and 500+ languages Model-in-the-loop data annotation and evaluation ISO 27001/27701/42001, GDPR, and HIPAA compliance Named trusted clients - Adobe, Amazon, Google, Meta, OpenAI
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	Real, verifiable major-company client roster Ethical, privacy-first sourcing stance rather than unlicensed scraping Comprehensive compliance credentials for regulated industries
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	Pricing isn't public - requires a custom quote Built for enterprise AI teams, not individual developers Data quality evaluation still requires domain expertise to apply correctly
Company	Activeloop, founded 2018	Defined.ai

Prices come from each vendor's pricing page, last checked 20260826. Check the vendor before you buy.

FAQ

Questions people ask

Is Activeloop better than Defined.ai?

In our reviews Activeloop scores 4.1 and Defined.ai scores 3.6. 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. Defined.ai: The world's largest ethically-sourced AI data marketplace - trusted by Adobe, Amazon, Google, Meta, and OpenAI, custom data collection across 150+ countries and 500+ languages.

Which is cheaper, Activeloop or Defined.ai?

Activeloop: from $40/mo. Defined.ai: see pricing.

Do Activeloop and Defined.ai have free plans?

Only Activeloop has a free plan.

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