{"name":"form-blocks-by-engine","title":"Form blocks by engine","tables":[{"heading":"Block types (each vendor's API spec, read Oct 3 2026)","columns":["Engine","Block types","Types for forms"],"rows":[["Mistral OCR 4.1","13: text, title, list, table, image, equation, caption, code, references, aside_text, header, footer, signature","None. Signatures have a type; checkboxes appear inside list items"],["Landing AI DPT-3","14: text, table, table_cell, figure, marginalia, attestation, logo, card, scan_code, container, field, stamp, watermark, stroke","field: checkbox, radio, write-in or box, each blank or filled, with a confidence; text marked printed or handwritten. Both only on the DPT-3 Verity preview"],["Reducto r-1","12: Header, Footer, Title, Section Header, Page Number, List Item, Figure, Table, Key Value, Text, Comment, Signature","Key Value, Signature"]],"note":"Landing AI's chunk-types docs page lists 8 types and still names DPT-2; its API spec lists 14. One Reducto docs page also lists Checkbox; its API spec does not."},{"heading":"What came back on our pages","columns":["Engine","Pages","What came back"],"rows":[["Mistral OCR 4.1","1,487 stored pages","9 of its 13 types; none form-like"],["Landing AI DPT-3 Pro, and the Verity preview dpt-3-verity-20260804-preview","8 form pages","Text, tables and their cells, figures, marginalia and attestation; no field"],["Reducto r-1","8 form pages","Key Value 27 blocks, Section Header 18, Text 17"]],"note":"The 8 form pages of the Forms · Level 1 board."},{"heading":"What you can set","columns":["Engine","Block types","Your own prompts","Extraction to your schema"],"rows":[["Mistral OCR 4.1","Fixed","Annotations: a JSON schema of yours, for the page and for each figure","Through annotations"],["Landing AI DPT-3","Fixed; you choose which appear in the Markdown","Figure descriptions","Extract, plus Ground for each value's boxes on the page"],["Reducto","Fixed; you can leave types out","For text, tables or figures, plus a table-improvement mode","Extract with citations; Classify with your own categories"]],"note":"Table formats are on the Table formats board."}],"log":[{"date":"261004","line":"New board. Mistral has no form block; Landing AI's field type is preview-only and none came back on our 8 form pages; Reducto returns Key Value."}],"updatedAt":"2026-10-04T01:04:16.946Z"}