Everything we know about the AI training data market, as one tree.

Guides

• How to Sell Your Codebase to AI Companies (and What It's Worth)AI companies buy private codebases and price them by the tasks they yield: per repository, pull request or task. Who buys, what they pay, what kills a sale.32 min read, 78 records cited

Data, registers and tools

• Value your dataA valuation from public prices, in a few questions and no upload.
• How prices are negotiatedThe levers that move a price, each with the deal that shows it.
• Direct or through a brokerWhat a holder gains and gives up by dealing with one buyer alone.
• An offer in your inboxHow to read an unsolicited offer for a company's old data.
• Closed and insolvent companiesData is an asset of the estate, and it expires.
• Introduce a holderIntroduce a data holder and earn a share of our fee.
• FeesWhat a holder pays us, only when a sale closes.
• How we verify holdersThe checks every holder passes before a buyer hears of its lot.
• ToolsEvery free tool, in the order a sale uses them.

One page each

• Our agreements 3

Guides

• AI Training Data Prices in 2026: What Data Sells ForWhat AI training data sells for in 2026, kind by kind: company records, code, video, speech, images, text, RL tasks, robot data and expert work, every price sourced.75 min read, 139 records cited
• How Much Is Your Company's Data Worth to AI Companies?Company data is worth a range, not one number: it depends on what you hold, how linked and long it runs, and whether the rights are clean. The public evidence.42 min read, 98 records cited

Data, registers and tools

• Market ratesMedians by kind of data and side of the market.

Guides

• How Do AI Companies Get Their Training Data?AI companies get training data six ways: crawling the web, licensing content, paying experts, buying company records, building environments and using user data.27 min read, 100 records cited
• AI Training Data Companies: Who Does What in 2026AI training data companies in 2026 by category: expert data platforms, content marketplaces, records buyers, environment builders, annotation tools and brokers.25 min read, 138 records cited
• micro1, Handshake, Turing, Mercor: Data Programs Comparedmicro1, Handshake AI, Turing, Mercor and others publish programs to buy company records. Prices look alike; the licences, payment terms and leverage do not.38 min read, 141 records cited

Data, registers and tools

• VendorsWho sells data, RL environments and evaluations, in their own words.
• Data on offerEvery broker's lots on offer, side by side, read daily.
• CompaniesEvery organisation in the market with what is recorded about it.
• Acquire dataFor buyers: data sourced to your specification.

One page each

• Companies 300

Guides

• Reddit's AI Data Deals: What Google and OpenAI PayReddit licenses its posts to Google and OpenAI for AI training. What its SEC filings disclose, what only the press reported, and what any holder can learn.37 min read, 43 records cited
• AI Licensing Deals With News Publishers: Every Disclosed PriceEvery AI licensing deal with a news publisher that has a price on record, its term, licensee and use, how the deals are built, and who sued instead of signing.29 min read, 94 records cited
• How Big Is the AI Training Data Market? What the Records ShowPublished estimates of the AI training data market disagree tenfold. A bottom-up count from vendor revenues, disclosed deals and funding, and what is unknown.28 min read, 88 records cited

Data, registers and tools

• The market in numbersWhat the vendors earn and raise, and everything recorded, newest first.
• Weekly newsletterThe week's prices, deals and cases, every Monday.

One page each

• Newsletter issues 0

Guides

• Is It Legal to Sell Customer Data? A US Guide for AI TrainingOften yes, but through layers: your privacy policy, the FTC Act, state and sector laws, and customer contracts. De-identified records are the main lawful path.43 min read, 163 records cited
• Fair Use and AI Training: What US Courts Have RuledUS courts are split: training was fair use in Bartz v. Anthropic and Kadrey v. Meta, not in Thomson Reuters v. Ross, and pirated copies lost. Where each stands.39 min read, 81 records cited
• Is It Legal to Scrape Data for AI Training? (US Law, 2026)Scraping public pages is rarely a federal crime after Van Buren and hiQ, but contract, copyright, anti-circumvention and privacy law apply. Resale is hard.30 min read, 55 records cited
• Can a Company License Employee Emails and Slack for AI Training?Usually yes for business records the company controls, but only after it handles monitoring notices, third parties in the messages, privilege and vendor terms.25 min read, 49 records cited
• Selling Customer Data in Bankruptcy: Section 363 ExplainedA bankrupt company can sell customer data only if the sale fits its privacy policy, or a court-appointed privacy ombudsman reports and the judge approves it.30 min read, 70 records cited
• What Is a Data Licensing Agreement? The Terms for AI TrainingA data licensing agreement lets a buyer use data for set purposes while the holder keeps ownership. Each clause AI buyers ask for, and where holders stand.35 min read, 86 records cited
• HIPAA De-Identification for AI Training: Safe Harbor vs Expert DeterminationHealth data leaves HIPAA only through Safe Harbor (remove 18 identifiers) or an expert's determination of very small risk. How each works for AI training.40 min read, 67 records cited

Data, registers and tools

• Lawsuits and rulingsEvery case, ruling and settlement over training data.
• Licence termsWhat buyers ask for in a licence, and where holders stand.
• De-identification standardOur rules for removing people from records, each with its source.
• AI crawler censusA daily census of robots.txt across the most visited sites.

One page each

• Software terms 18

Guides

• What Are RL Environments? Who Builds, Buys and Prices ThemAn RL environment is a sandbox where an AI agent attempts tasks with tools and a verifier scores each try. Who builds them, who buys them and what they cost.35 min read, 80 records cited
• How to Sell Videos to AI Companies: Prices, Buyers and RightsAI companies license video by the hour or minute. What buyers pay, which footage sells, and the rights you need in every frame before you sell a library.34 min read, 67 records cited

Data, registers and tools

• Where data comes fromWho holds each kind of data, how much exists and how it reaches buyers.
• Companies closingCompanies closing, sold or gone dark, and the records they leave.

One page each

• Kinds of data 9
• Who holds data 8
• Companies closing 149

Guides

• How We Source and Check Every Number on This SiteEvery number here links to a record, every record to its source's own words, re-read daily. How sources are weighed, figures derived and guides built on them.16 min read, 4 records cited
• What Is Training Data Provenance, and Why Buyers Now Ask for ItTraining data provenance is the record of where data came from, the rights it was collected under and what was done to it. Buyers now ask for it in writing.30 min read, 46 records cited

Data, registers and tools

• RecordsEvery fact about the market, each with its source.
• SourcesEvery page, filing and report the records were read from.
• FiguresEvery number on the site and how it is computed.
• DatasetsThe registers as open datasets to download and cite.
• MCP serverAsk an AI assistant for prices, buyers and deals from these records.
• All guidesEverything published here, as one tree.

One page each

• Figures 323
• Records 2,884
• Sources 2,133