TypeOS

What do they actually do

TypeOS makes a browser extension that adds an AI side panel into Google Docs and other web pages so you can chat with an assistant without leaving the tab. It supports writing, editing, formatting, summarizing, and research directly in the document, and lets users choose from multiple AI models (they mention ChatGPT, Gemini, Claude, Perplexity) TypeOS homepage · Chrome Web Store.

Common workflows include drafting or rewriting passages, citing sources, generating quizzes/flashcards, summarizing notes, and basic grading/feedback tasks from the side panel, with results inserted inline or copied from the panel TypeOS homepage · Use cases / blog.

The product has a Free tier, a Pro plan at $100/year, and an Enterprise option signaling work toward compliance and admin features. It’s currently used by students, teachers, and knowledge workers who prefer to keep AI in the same tab as their document Pricing · YC company page.

Who are their target customer(s)

• Students writing essays, taking notes, or studying: They need quick help drafting, citing, summarizing, and turning notes into flashcards but lose time switching between separate tools for research, writing, and study aids. TypeOS keeps these tasks inside Google Docs and the page they’re on. TypeOS homepage · Use cases / blog
• K–12 and college teachers handling grading and assignment creation: They want to grade faster and give consistent feedback, but grading is repetitive and time‑consuming. TypeOS’s grading/quiz tools and the founders’ prior focus on education indicate this is a core workflow they’re targeting. Use cases / blog · YC company page
• Knowledge workers (PMs, consultants, analysts) crafting documents: They lose flow when switching tabs to research, rewrite, or cite, and spend time on manual edits and formatting. TypeOS embeds editing and suggestions directly in the document to reduce context switching. TypeOS homepage · Chrome Web Store
• Content creators working on web content (bloggers, scriptwriters): They need to summarize pages, turn videos into scripts, or repurpose content and currently juggle multiple tools. TypeOS’s extension works on YouTube and other pages to reduce those tool hops. TypeOS homepage · Use cases / blog
• IT leads or school/district procurement teams: They require compliance, data controls, SSO, and admin features before approving extensions for staff or students. TypeOS flags an Enterprise tier and SOC as part of addressing these concerns. Pricing

How would they acquire their first 10, 50, and 100 customers

• First 10: Personally recruit known teachers/professors for 1‑class pilots with free Pro access and hands‑on setup; use feedback to refine grading/quiz features and capture testimonials. TypeOS blog · YC company page
• First 50: Turn pilots into repeatable programs with 5–10 teacher champions and student ambassadors to drive installs and reviews; publish case studies showing time saved and quality of outputs; post in teacher forums and campus groups. Chrome Web Store · Use cases / blog
• First 100: Add in‑product referral/sharing flows, ship short demos and SEO content, and run small paid tests to teachers and knowledge‑worker audiences; start 1–2 paid departmental or school pilots to validate SSO/admin needs. Pricing · TypeOS homepage

What is the rough total addressable market

Top-down context:

TypeOS sits across consumer AI writing assistants, education technology, and enterprise productivity. AI writing assistants were estimated around $1.7B in 2023 and growing GMInsights; EdTech is sized in the low‑hundreds of billions with LMS ≈ $23B (2024) Grand View Research · Fortune Business Insights; enterprise gen‑AI value creation is estimated in the trillions McKinsey.

Bottom-up calculation:

Near‑term SAM example: 20,000 Pro users at $100/year yields ~$2M ARR, plus 25 small institutions averaging 200 seats at $40/seat adds ~$0.2M, for ~$2.2M. This scales as conversion, seat counts, and pricing improve.

Assumptions:

• Pricing remains at $100/year for individuals; school pricing averages ~$40/seat/year for small deployments.
• Conversion is driven primarily by Chrome extension installs and edu pilots; no paid enterprise yet.
• Institutions in the example are departments or small schools with limited seat counts initially.

Who are some of their notable competitors

• Google Docs (Duet AI / Help me write): Built‑in generative help in Google Docs for drafting and rewriting reduces the need for third‑party extensions inside Docs, overlapping directly with TypeOS’s in‑document assistant. Help me write · Duet AI
• Grammarly: A widely adopted extension and app for grammar, tone, clarity, and now generative drafting across sites (including Google Docs), making it a common default for inline writing assistance. Grammarly for Chrome · Features
• Wordtune: Chrome extension focused on rewriting, paraphrasing, and summarizing text inline across web editors, competing on quick rephrasing and concise summaries. Wordtune extension · Support
• Merlin: A universal ChatGPT‑style assistant that works across webpages (Gmail, Docs, YouTube, etc.), appealing to users who want one cross‑site chat assistant rather than a Docs‑centric tool. Chrome listing
• Compose AI: Lightweight Chrome extension for fast draft generation and sentence‑level autocompletion where you type, overlapping with TypeOS on quick in‑editor writing help. Homepage · Chrome listing