MentionFox
Home › funding signals › Theo
Accelerator · announced

Theo (YC F26) — The site-builder and engine that gets your business found

Theo is an AI agent that builds your small business website in minutes, then works on it every week so customers find you, whether they search Google themselves or ask an AI. Theo studies your site, your market and your search data, picks what will win the next customer, and ships it: a page for what people are searching for, a post that answers their question, or the fix that was holding you back.

Sell to companies like these? Paste your website and see 10 with a filed reason to buy this month. Free.

Opens in a new tab. No signup.

Run the free check on Theo →

Theo

New accelerator entry · 2026-10-18 · the record

Fall 2026
batch
—
people
Early
stage
United States of America
region
Open the record →

What the record says

BatchFall 2026
Announced2026-10-18
StageEarly
StatusActive
IndustryB2B
Sub-industryB2B -> Marketing
SectorsSMB, SEO, AI
RegionsUnited States of America, America / Canada
BasedNew York City, NY, USA
HiringNo
Sitehttps://theo.site/

Pitching, partnering or investing alongside them? See who really runs and owns Theo.

Watch Theo

Free to see. No signup.

What do you want to do with Theo?

Get the full cited report on Theo

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on Theo: verified, sourced, every claim cited, ready in a few minutes. See pricing.

See a sample report

In their words

Theo is an AI agent that builds your small business website in minutes, then works on it every week so customers find you, whether they search Google themselves or ask an AI. Theo studies your site, your market and your search data, picks what will win the next customer, and ships it: a page for what people are searching for, a post that answers their question, or the fix that was holding you back.

Want the whole picture on Theo?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on Theo: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on Theo covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    1 cited source found

Plus the sections for what you are deciding, which you pick after ordering.

See a sample report

First screen of a real sample Full Report on Target: the verdict, 16 sections, 39 cited sources, dated 2026-09-28A real finished report, first screen. Opens in a new tab.

The full profile

Checking your access…

Is this you?

If you're behind Theo: acceptance into a YC batch is one of the few weeks a young company gets looked up by people who matter — investors, other founders, press. FoxPlug turns the commits, deploys, and releases you're already making into that story automatically, so anyone who looks finds something current. GetFoxChat puts a guide on your own site so the people YC's own page just sent you don't read one line and leave.

Sourced from the company's Y Combinator directory entry.

RSS

Tools for this story

Each opens in a new tab, filled in for Theo. With no account yet, you sign up free and land on the result.

Share this page

Just raised? Share it.

Theo: Accepted into Y Combinator Fall 2026

Cite this page

Permanent URL: https://mentionfox.com/funding/yc-theo
Last updated 2026-10-19
Primary record: Y Combinator directory entry
Theo (YC F26) — The site-builder and engine that gets your business found. MentionFox, 2026-10-19. https://mentionfox.com/funding/yc-theo