Hugging Face · Research
Hugging Face
The open hub for models, datasets and demos.
Visit sitePerplexity
By Perplexity AI
Answer engine that cites its sources as it searches the live web.
Research
WHAT IT DOES
- Maker
- Perplexity AI
- Website
- perplexity.ai
- Category
- Research
An answer engine that searches the live web and cites its sources inline. It popularised citation-first AI search, a directly relevant model for the show-the-work stance this site takes on AI-generated claims.
Listed in the directory because it is part of the stack pushing toward AGI. Picked by the editors; none of it feeds a calculation on this site.
More of the stack
Epoch AI · Research
Epoch AI
Tracks the compute, data and cost trends that drive AI progress. One of the sources this site reads.
Visit siteOpenAI · Assistant
ChatGPT
The mass-market on-ramp to frontier models: a general assistant for writing, reasoning and code.
Visit siteMissing
a tool?
Send it by email with a line on what it does. Every listing is reviewed by hand before it goes up.