Field notes from the operational frontier.
Deep dives on evaluations, post-training, human data, infrastructure, and the systems that decide whether AI actually works.
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New to AI, or trying to keep up? The AI Learning Guide is what our researchers and operators send when someone asks where to begin. Pick the path that fits you, or read it end to end.
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Start with the handful of papers and books that explain modern AI.
Start with the basics → 02I want to keep up
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Courses and credentials employers recognize. Free Data Gradient certificates are included.
See courses → 04I want to know who’s building
A filterable map of 140+ companies across the AI stack.
Explore the landscape →From the learning guide
Three picks from each part of the guide. Every list goes deeper on the full page.









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Maps
Interactive market maps of the companies behind AI’s human data. Each one is searchable, filterable, and open to suggestions.
01 · Market mapHuman Data for Physical AI
Companies providing human data for physical AI. Grouped by data type and limited to those with public funding above $10M.
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02 · Interactive atlasPhysical AI Atlas
Search, filter, and shortlist human data vendors for physical AI across egocentric, teleoperation, synthetic, and more.
Open the atlas →
03 · Interactive mapMultilinguality Map
Companies selling multilingual human data for AI, across localization, evals, speech, RLHF, and low-resource languages.
Open the map →
04 · Interactive atlas · NewCoding Atlas
Companies selling coding data for AI, across code SFT, RLHF and code evaluation, benchmarks, agentic environments, and security.
Open the atlas →Blog
Field notes and deep dives on evaluations, post-training, human data, and the systems that decide whether AI actually works.
Latest · Kimi K3Kimi K3 Just Changed The Way AI Models Are Built
Chinese AI labs just caught up in a big way. Kimi K3’s architecture achieves 2.5x training efficiency with impressive memory recall.
Read the brief →
Deep dive No. 02 · Meta FAIRYour brain just became an LLM.
Meta’s TRIBEv2 predicts how video, audio, and text drive human brain activity. It then uses that to reproduce classic neuroscience experiments.
Read the deep dive →
Edition No. 01 · Multilingual evaluationYour AI agent isn’t wrong. Your benchmark is.
What a dinner with LILT’s CEO revealed about a benchmark error distorting how we evaluate AI in every language but English.
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What researchers are working on in post-training, evaluation, and human data, plus the next rooms near you.
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