Launch HN: Vespper (YC F24) – SOTA Docx MCP

Vespper (YC F24) has launched, introducing a state-of-the-art Docx MCP. Their approach was benchmarked against five other solutions using 279 DOCX editing tasks. These tasks were run on GPT 5.6 Sol and GPT 5.6 Terra models, both at medium reasoning. Vespper developed an internal annotation tool to synthesize natural-language instructions for each document, allowing for quick preview, task synthesis, and review, with options to approve, discard, or change tasks.