{"slug":"databento","name":"Databento","domain":null,"verdict":"As of 2026-07-20, ChatGPT, Claude, Gemini, Grok collectively rank Databento #2 of 9 for stock market data api for developers. Source: https://modelsagree.com/product/databento (modelsagree.com, CC BY 4.0).","best_rank":2,"categories":1,"brief":{"category":"best-stock-market-data-api-for-developers","title":"Best stock market data API for developers","rank":2,"of":9,"top":"Massive","day":"2026-07-20","why":[{"t":"direct-from-venue feeds","m":["ChatGPT","Claude"],"q":"normalized direct-from-venue feeds"},{"t":"nanosecond timestamps","m":["ChatGPT","Claude"],"q":"nanosecond timestamps"},{"t":"full order-book depth","m":["ChatGPT","Claude"],"q":"full order-book depth (MBO)"},{"t":"transparent pricing and licensing","m":["ChatGPT","Claude"],"q":"transparent usage-based pricing with no license negotiation"}],"gap":[{"t":"clean REST and WebSocket APIs","m":["ChatGPT","Claude","Gemini","Grok"],"q":"clean REST/WebSocket APIs"},{"t":"flat-fee unlimited API calls","m":["Claude"],"q":"flat-fee unlimited API calls"},{"t":"financials and corporate actions","m":["ChatGPT"],"q":"corporate actions, financials"}],"fix":[{"t":"overkill for lightweight applications","m":["ChatGPT","Claude"],"q":"data volumes are excessive for ordinary dashboards or lightweight applications"},{"t":"pay-per-byte pricing punishes exploration","m":["Claude"],"q":"pay-per-byte pricing punishes exploratory \"give me everything\" queries"},{"t":"no fundamentals or news","m":["Claude"],"q":"no fundamentals/news"}]},"entries":[{"slug":"best-stock-market-data-api-for-developers","title":"Best stock market data API for developers","rank":2,"of":9,"score":8,"appearances":2,"modelRanks":{"ChatGPT":2,"Claude":2},"reason":"Highest-fidelity choice for quantitative and trading systems, with direct-feed data, nanosecond timestamps, L2/L3 order books, historical replay, normalized schemas, and unusually transparent licensing; a near-tie with Massive when data quality matters more than simplicity.","reasons":[{"model":"ChatGPT","reason":"Highest-fidelity choice for quantitative and trading systems, with direct-feed data, nanosecond timestamps, L2/L3 order books, historical replay, normalized schemas, and unusually transparent licensing; a near-tie with Massive when data quality matters more than simplicity."},{"model":"Claude","reason":"Best raw data quality available to ordinary developers — normalized direct-from-venue feeds (CME, Nasdaq, OPRA, etc.) with nanosecond timestamps, full order-book depth (MBO), transparent usage-based pricing with no license negotiation, and a strong Python/Rust/C++ client stack; ranked assuming the practitioner cares about research/backtesting fidelity, where nothing else at this price tier comes close."}],"fixes":[{"model":"ChatGPT","fix":"Its pricing, exchange concepts, and data volumes are excessive for ordinary dashboards or lightweight applications."},{"model":"Claude","fix":"Not a casual REST lookup service — pay-per-byte pricing punishes exploratory \"give me everything\" queries, no fundamentals/news, and the L3/binary-format model is overkill if you just need daily closes."}],"updated":"2026-07-20","rank_history":{"days":["2026-07-19","2026-07-20"],"ranks":[2,null]},"api":"https://modelsagree.com/api/v1/best/best-stock-market-data-api-for-developers.json"}],"page":"https://modelsagree.com/product/databento","check":"https://modelsagree.com/check?q=Databento","updated":"2026-07-21T04:28:25.186Z","attribution":"modelsagree.com, CC BY 4.0"}