Other
Aug 2025The company publicly pivoted from an AI SRE/on-call product to a regulated-documents workspace for pharma and medtech, indicating a material change in product direction.
SourceCompany research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
YC F24 startup building a DOCX MCP / AI document editor that turns agent output and source material into tracked, review-ready Word documents; current emphasis is regulated life-sciences and technical documentation.
Primary product
vespper-docx-mcp / AI document editor for regulated Word workflows
Founded
2024
Headquarters
San Francisco, United States
Team size
1-10
Industry
Technology, Information and Internet
Sub-industry
AI document automation for regulated workflows
Offices
San Francisco, United States
Tel Aviv-Yafo, Israel
Business model
open-source
freemium
self-hosted software
enterprise licensing
Funding
Stage
pre-seed
Total raised
$500K
Latest round
Pre-Seed · Sep 2024
Latest amount
$500K
Sep 2024
People & investors
Investors
Work & culture
Founder-led, small-team, open-source, and community-driven; support channels include GitHub Discussions and Slack, with strong emphasis on self-hosting and data ownership.
Product & market
Pricing
Free/open-source self-hosting with a paid vespper-ee / enterprise path; the site offers 'Start for free' and 'Talk to founders'.
Differentiators
- —Word output with tracked changes
- —source traceability from claims back to evidence
- —structured authoring for long-form regulated docs
- —audit-ready revision history and collaboration
- —self-host / own your data
- —DOCX MCP-first agent integration
Technology
TypeScript
Python
Docker
Docker Compose
MCP
LiteLLM
PostHog
ChromaDB
VectorAdmin
Slack
Datadog
Grafana
Prometheus
Jaeger
SigNoz
Coralogix
PagerDuty
Opsgenie
GitHub
Notion
Customers
regulatory affairs teams
medical writers
quality/regulatory managers
pharma teams
medtech teams
biotech teams
technical writers
legal and government agent builders
Competitors
generic AI assistants such as ChatGPT or Gemini
Microsoft Word Copilot
manual Word-based document workflows
legacy regulatory document management suites
general-purpose AI document editors
Scale & contact
Estimated revenue
≈$440K ARR (estimated, third-party)
Estimated monthly visits
1.3K
Traffic estimate as of Sep 2025
Signals & risks
Latest news
Topaz T. · Jul 2026
Describes the company’s target customers as agent builders in legal, healthcare, and government and frames the product around token efficiency and AI adoption in those workflows.
Vespper (YC F24) · Oct 2025
Promoted its AI workspace for regulatory teams, emphasizing faster authoring, review, and compliance across global submissions.
Vespper (YC F24) · Sep 2025
Shared a live product demo focused on accelerating regulatory documents, including a first draft of an ICH CTD Module 2 summary in under two minutes.
Dudu Lasry · Aug 2025
Explains the pivot away from AI SRE toward regulated-document workflows for pharma, medtech, and biotech, including drafting IND/BLA/CSR/510(k) documents and search across FDA databases.
Vespper (YC F24) · Sep 2024
Announced the rebrand from Merlinn to Vespper and the company’s acceptance into Y Combinator Fall 2024, with an opening for an additional pilot slot.
Jobs and careers at Vespper
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