AI Circle · Resources

Field notes from the operational frontier.

Deep dives on evaluations, post-training, human data, infrastructure, and the systems that decide whether AI actually works.

From the learning guide

Three picks from each part of the guide. Every list goes deeper on the full page.

Maps

Interactive market maps of the companies behind AI’s human data. Each one is searchable, filterable, and open to suggestions.

AI Circle Human Data LandscapeEvery company across all 10 maps: matrix, finder, network, overlap and compare. Find your company and share its footprint.Explore all maps interactively →
Human Data for Physical AI01 · Market map

Human Data for Physical AI

Companies providing human data for physical AI. Grouped by data type and limited to those with public funding above $10M.

Explore the map →
Physical AI Atlas02 · Interactive atlas

Physical AI Atlas

Search, filter, and shortlist human data vendors for physical AI across egocentric, teleoperation, synthetic, and more.

Open the atlas →
Multilinguality Map03 · Interactive map

Multilinguality Map

Companies selling multilingual human data for AI, across localization, evals, speech, RLHF, and low-resource languages.

Open the map →
Coding Atlas04 · Interactive atlas

Coding Atlas

Companies selling coding data for AI, across code SFT, RLHF and code evaluation, benchmarks, agentic environments, and security.

Open the atlas →
Trust & Safety Map05 · Interactive map

Trust & Safety Map

Companies selling trust and safety data and services for AI, across moderation, red teaming, safety evals, alignment data, and guardrails.

Open the map →
Expert Data Map06 · Interactive map · New

Expert Data Map

Companies selling expert human data for AI, across STEM and reasoning, medical, legal, finance, and expert talent networks.

Open the map →
RL Environments Atlas07 · Interactive atlas · New

RL Environments Atlas

Companies building RL environments and agent data, across gyms, enterprise workflows, computer use, tool use, verifiers, and sandboxes.

Open the atlas →
Evals & Benchmarking Atlas08 · Interactive atlas · New

Evals & Benchmarking Atlas

Companies evaluating AI, across eval platforms, observability, benchmarks and leaderboards, audit firms, and certification bodies.

Open the atlas →
Audio, Image & Video Data09 · Interactive map · New

Audio, Image & Video Data

Companies selling multimodal data for AI, across speech, voice talent, audio labeling, licensed libraries, captioning, and 3D.

Open the map →
Data Licensing & Private Data10 · Interactive map · New

Data Licensing & Private Data

Who buys and sells private data for AI, across data buyers, licensing brokers, company records, licensed text, and consumer data.

Open the map →
Labeling Platforms & Data Workforces11 · Interactive map · New

Labeling Platforms & Data Workforces

Companies selling labeling, by how you buy: annotation software, open-source tools, managed vendors, BPOs, and crowd marketplaces.

Open the map →
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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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