Know what works in AI.
Sourced evidence and practical guidance for the people putting AI to work.
We grade the published studies of AI at work, use by use, and say how sure anyone can be. No one pays to be rated.
AI for consulting and analysis tasks may work for tasks that sit inside what the AI does well.
Evidence strength 2 of 5 When AI felt faster but wasn'tIn a 2025 trial, experienced developers on their own projects were 19% slower with AI while believing it sped them up. METR thinks newer tools help more, but calls its follow-up data very weak evidence.
See the studies →Nobody has measured it yetNo public study we could rate covers sales staff using AI, or bank and insurance staff answering customers with it.
See the studies →The US and China lead on Progress at 77 and 74 out of 100; Germany and France lead the rulebook at 94.
Open AI by Country →News with memory: each event we report, tied to what came before it and to the numbers it changes.
Thread · updatedAI Layoffs: Job Cuts Companies Link to AIThread · updatedAI Copyright CasesThread · updatedAI Chatbot Rules for ChildrenOpen the Record →On the Epoch Capabilities Index the best models from OpenAI, Anthropic and Google sit within 3.0 points. Anthropic's annualized revenue reached $65B (Jul 2026), OpenAI's $50B (Sep 2026).
Dates already fixed in law, in an order or by the company: rules that start to apply, models that are switched off, agreements that begin. Each opens its official source or the Record thread that tracks it.
How every number is checked
Editorial standards →One named source per chart
Each chart cites the report and the original survey, index or leaderboard behind it, with a link.
Every number matched to the data
Figures in the text are checked against the chart's CSV before it is published, and re-checked on updates.
Yours to download and cite
Every chart comes with its CSV, a PNG and a ready-made citation, so you can verify it yourself.
Know what works in AI.
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