The ZeroEntropy icon on a laptop

Client: ZeroEntropy

Brand, website, and launch graphics for a YC startup, from logo to seed round

Contributions: Brand identity, logo, logo animation, brand guidelines, web design and development in Framer, motion graphics, SEO, webinar and hiring materials, and merchandise.

Scope

ZeroEntropy makes retrieval models that power AI search and agents. The San Francisco team came through Y Combinator’s Winter 2025 batch and raised a $4.2M seed round. In July 2026 Notion announced that ZeroEntropy would join it.

In October 2024 the founders needed a brand, fast, for an upcoming launch, with the dark, polished feel developers trust in tools like Vercel and Linear. We stayed on for six projects over 18 months, from the first logo to the funding announcement.

The icon fuses a square zero with the eta.

The icon fuses a square zero with the eta.

The ZeroEntropy website on tablet.

The ZeroEntropy website on tablet.

Challenge

Developers judge a tool in seconds, and they expect the polish of the tools they already use. The name plays on eta, the Greek letter for entropy, which is hard to type and search for, so we kept the eta in the logo and out of the name.

Both launches had fixed dates: the brand in October 2024 and the funding announcement on 9 July 2025.

Process

  • Ran discovery and a mood board, then presented three logo options.
  • Settled the final logo on 14 October 2024, ahead of the launch.
  • Tested the palette on a website mockup and delivered the brand kit on launch day.
  • Took the Framer website from page structure to live, launching on 1 May 2025.
  • Animated the logo and made the motion graphics for the funding video, in 4K.
  • Relaunched the homepage, added industry pages, and supported SEO through 2025.
An early prototype of the ZeroEntropy homepage.

An early prototype of the homepage.

The homepage accuracy chart

The retrieval stack, end to end

The animated logo, and the motion graphics we made for the Framer website.

ZeroEntropy tee with the wave graphic
ZeroEntropy black tee with the icon
ZeroEntropy white tee with the icon
ZeroEntropy hoodie with the wave graphic

Tees and a hoodie from the merchandise we designed.

A hiring poster from the 2025 marketing work.

A hiring poster from the 2025 marketing work.

Results

The brand shipped on launch day, the website went live on 1 May 2025, and the funding graphics were ready for the announcement on 9 July 2025.

Through Y Combinator, a seed round, and the move to Notion, the icon we designed still marks zeroentropy.dev.

The ZeroEntropy icon on a phone home screen

The ZeroEntropy icon, still in use today.

Highly recommend

Thomas was super reactive and understood the vision we had for our branding super fast. Highly recommend

Founder and CEO of ZeroEntropy

Got a launch date coming up?

Work directly with Thomas on your brand, website, pitch deck, or product. One weekly plan, new work every day.

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