Thesys

Thesys is an AI spreadsheet generator tool. A developer API from Thesys that converts conversations, files and business data into editable reports, sales decks, dashboards and research deliverables inside an AI product, with template branding, natural language revision and export to .pptx and PDF.

Thesys Reports API is an infrastructure product for teams building AI applications that need to produce more than a wall of text. It accepts conversations, documents, PDFs, spreadsheets, database records, CRM entries, knowledge bases and API responses, then returns polished artifacts such as reports, sales decks, customer success reviews, business summaries, research deliverables and executive briefings. The output is a structured, presentation-ready document rather than raw generated copy, and it can be viewed, edited, exported and shared without leaving the host application. The product is aimed squarely at developers and product teams shipping AI-native software, not at individual users looking for a standalone slide maker. Everything happens through an API, so the integration work is on the engineering side: wiring data sources in, mapping templates, and deciding how generated artifacts surface in the interface. End users of the host app then iterate in plain language, asking for a section to be restructured or a layout to change, and the artifact updates in place. Branding and consistency are handled through templates. Organizations upload their own presentation structures and apply themes, layouts, typography, colors and design system rules, so every generated deck follows the same visual standard. Outputs export as .pptx and PDF files that recipients can present, download and distribute. Thesys positions this as a complete artifact layer rather than a file converter: generation, visualization, editing, branding and export are bundled behind one interface instead of being stitched together from separate services. Security commitments include SOC 2, ISO 27001 and GDPR compliance, no use of customer data for model training, managed deployment inside a customer's own cloud environment, and enterprise support with SLAs, monitoring and round the clock coverage. The homepage does not publish pricing tiers or a self-serve trial, so evaluation starts with an API key request and the documentation. Buyers comparing it against generic document generators should weigh the developer-only access and the engineering lift against the depth of the editing and branding workflow.