How do their growth rates compare?

Defined.ai has a month-over-month growth rate of -21%; Select Star has —.

How does pricing compare?

Defined.ai: Contact for Pricing. Defined.ai does not publish standard list prices; datasets and services are quoted per project. Teams can browse the marketplace, access free dataset samples and request quotes, with pricing depending on dataset type, customization, volume and delivery method. Select Star: Contact for Pricing. Quote-based enterprise pricing; Select Star does not publish public list prices. Cost depends on the scale of your environment — connected data sources, data volume, and the seats or capabilities you need — so evaluation typically starts with contacting sales. There is a free Chrome extension, and the SEO/AI discovery scoop of legacy listings should not be read as a price.

What are alternatives to Defined.ai and Select Star?

Other tools in related categories include Duck.ai, ModelScope, Roboflow, Bright Data, Labelbox.

Defined.ai vs Select Star — Traffic (146.25K vs 0), Pricing & Verdict

Open AI Tools

Defined.ai vs Select Star — Traffic (146.25K vs 0), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Defined.ai	Select Star
Official Domain	definedcrowd.com	chromewebstore.google.com
Pricing Model	Contact for Pricing	Contact for Pricing
Monthly Visits	146.25K (146,251)	0 (0)
MoM Traffic Delta	-38.82K (-21%)	0 (—)
Primary Market & Share	🇺🇸 United States (20.6%)	🌐 Global (—)
Direct Visits / mo	84.42K	0
User Rating	4.4	4.4
Supported Platforms	Website	Browser Extension

Defined.ai

Enterprise AI training data, annotation and evaluation services

AI Data Marketplace

A large selection of ready-to-use, ethically sourced datasets across audio, image, video, text and multimodal formats, with advanced filtering and free samples.

Data annotation & model-in-the-loop

Expert-verified labeling for text, audio, image and video using model-first, human-in-the-loop workflows for accuracy and fairness.

Machine translation & multilingual data

High-quality multilingual content for global AI systems, drawing on 500+ languages, dialects and locales.

Custom data collection

Global, diverse data collection at scale for training, with privacy and security vetting on every dataset.