Sourcetable published a self-administered "Sourcetable Benchmark" — a 24-test gauntlet — in which it scored 24 out of 24, while Microsoft Copilot scored 19 and Google Sheets scored 17. On connectors, both Copilot and Google Sheets went 0-for-2, while Sourcetable went 2-for-2. On files (parsing PDFs, DOCX, PNGs, and other formats), Sourcetable went 4-for-4 against 2-for-4 for both rivals. The benchmark was built on hard rules: every test ships with a real XLSX input and output, with an open evaluation script checking cell types, formulas, formatted values, colors, fonts, and formula results down to a tolerance of 0.001. Sourcetable ran the benchmark in "Light" AI mode, its most conservative setting. The benchmark's authors noted that Copilot and Google Sheets "[do] not seem to have full access to the Internet or Code Execution," and that Google Sheets does not even have basic web search.