AI reference
Clear AI definitions and model data you can check.
A glossary written for practitioners, research summaries, and language models compared on price, limits and capabilities, with a source and a date next to every number.
Glossary
270 terms · A–Z
Definitions first, then how it works, worked examples, formulas and code.
LLM API pricing
62 models · 5 vendors
Per-token prices from each vendor's own page, with cache, batch and long-context rates.
Models
7 model cards · 6 comparisons
Context windows, limits and capabilities, with the source behind each value.
Tools
Token counter · cost calculator
Count the tokens in your prompt, then see what a month of traffic costs on every model.
LLM changelog
20 changes · last Sep 15, 2026
Model launches, price changes and retirements, each linked to the vendor's notice.
News and research
194 articles
Pricing news, research summaries and applied machine learning explainers.
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Fresh in the reference
Recently updated in the glossary
Latest articles
- Latest
AI Algorithms for Image Recognition: From CNNs to Vision Transformers, YOLO and SAM
Image recognition is the ability of software to identify what is in an image or video frame: which objects are present, where they are, and sometimes exactly which…
AI Slop by the Numbers: How Much of the Internet Is Now Machine-Made
AI slop is low-quality content produced in bulk with generative AI and published mainly because it is cheap to make, not because anyone asked for it: filler articles,…
AI Porn in 2026: How Much Is Out There, Who Makes It, and What the Law Does
How much AI-generated sexual content is being uploaded to video hosts and social platforms? The honest answer is that nobody outside the platforms can say, and the…
Best AI Model for Writing: Why Four Leaderboards Disagree
"Best AI model for writing" has even less of a clean answer than the coding question. For coding, vendors at least publish benchmark scores, even if they disagree on…
Best AI Model for Coding: What the Benchmarks Actually Say
"Best AI model for coding" sounds like a question with a clean answer. It isn't — not because the data doesn't exist, but because the seven models this site tracks don't…
Uncensored AI Models: What They Are and How They're Made
"Uncensored" AI models are not a different kind of model — they're standard open-weight chat models (Llama, Mistral, Qwen, and others) with one specific, identifiable…