Miju Labs

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Founder and CEO of Taste Labs, the best-funded pure-play 'taste' data company ($18.5M seed from CRV and Amplify, Jun 2026). She came from growth, strategy and marketing at Exa, a search-API startup selling to AI labs, so she has sold to labs before. She is the category's main public voice, arguing that AI slop is caused by post-training on averaged preferences.

high confidenceSan FranciscoUpdated 2026-09-19

Background

Studied economics at the University of Chicago and worked in brand strategy before joining Exa as an early employee (AI Engineer bio). At Exa, public posts describe her as head of strategy and marketing and, at one point, chief of staff; Amplify credits her with leading growth and with Exa's distinctive billboard marketing. Latitud says she was in its 2024 fellowship after a previous company that 'didn't work out', and that Latitud wrote Taste Labs' first cheque.

She left Exa to found Taste Labs, which ran in stealth, reportedly already selling to labs and application companies, before launching publicly on 16 Jun 2026.

What they run now

Runs the company and the lab sales. She is positioning Taste Labs as a 'judgement company' that starts in design and expands to code style, editorial and brand. Two product lines: post-training data, rubrics and RL environments for labs, and the Brand API for application companies. She is hiring engineers and growth staff and scaling the Taste Makers designer network. At launch she said inbound demand had been high enough to delay the public launch (TBPN).

Career

  1. presentFounder & CEO, Taste Labs
  2. 2024Founder, Earlier startup (name not public)Latitud: 'didn't work out'
  3. Brand strategy (employer not public)
  4. Early employee; growth lead / head of strategy & marketing (also referred to as chief of staff), Exa
  5. University of Chicago, Economics

On the record

Why AI output is bland · 2026-06

Next-token prediction regresses to the probability-weighted average, and RLHF on aggregated preferences strips out distinctive outliers, so post-training flattens creative output. source

Taste is learnable · 2026-06

Taste is pattern recognition built through exposure and selection, not an innate gift, so it can be captured as training signal. source

Verifiability gap · 2026-06

Subjective domains lack the verifiable rewards code and math have; the company's mission is 'making the unverifiable verifiable, starting with design'. source

Taste drifts · 2026-06

Taste needs continuous retraining as trends shift, unlike one-off fixes such as six-fingered hands; a recurring rather than one-time data need. source

Two-layer fix · 2026-06

Solving taste needs both better post-training data for foundation models and inference-time tools for brand and context consistency. source

Recent posts

9 posts archived · most engaged first, then the latest

Hamidah Oderinwale reposted this
Thais Castello Branco
CEO & Founder of Taste Labs | Prev founding team @Exa
Introducing the Taste Labs Research Fellowship! For those excited to work on evaluating model creativity, distilling human preference, and ending slop. You'll get compute, custom data, time with top designers and researchers, and a competitive stipend. In person in SF or remote, full-time or part-time. Check out some of the research questions you could explore and apply below 👇
22920 comments18 reposts
Thais Castello Branco
CEO & Founder of Taste Labs | Prev founding team @Exa
How do we end AI slop? To fix it, you gotta measure it first. Thanks for having me AI Engineer! Check out the full talk below: lnkd.in/e_GRJxRr
984 comments2 reposts

Interviews & talks

Connections

  • Sarah Catanzaroinvestor (Amplify co-led seed; wrote announcement)
  • Hamidah Oderinwalecolleague (Member of Technical Staff)
  • Gokul Rajarampublic backer / angel (per his X post)
  • Latitudfirst investor; 2024 Latitud Fellowship

Who they amplify

Accounts whose posts Thais has reposted recently: Andrew P., Taste Labs.

Why it matters here

She is Julian's closest direct competitor: same thesis (design taste as scarce training signal), with $18.5M and claimed frontier-lab customers. Her designer network (Taste Makers) pays 'what this skill is worth', has no exclusivity, runs through a WhatsApp group and admits by interview. Her Brand API shows where she thinks recurring revenue sits. For Julian the open ground is (a) European/German design communities her SF-centred network does not reach, (b) niches outside web, app and brand design (type, motion, print, illustration), and (c) subcontracting or partnering if she runs short of supply.

How to reach

Very public: X @thaiscbranco_, AI Engineer talks, long-form manifesto. Speculative: approach as a peer founder or potential supply partner (a European designer cohort) rather than as a customer. Ask how the trust-propagation vetting works in practice and whether labs pay a premium for named, vetted panels. Latitud or Amplify (Sarah Catanzaro) are the plausible warm paths.

What we could not establish
  • Taste Labs founding date and legal entity
  • Her exact Exa titles and dates
  • Name of the prior startup
  • Nationality or Brazil ties (Latitud is a LatAm fund and the team is partly in Brazil; not confirmed for her)
  • Size of the Taste Makers network and pay rates
  • Which frontier labs are actually customers (job ad says 'most frontier labs')
  • Name of the VP of Design

Sources

  1. The Source Code: Taste Labs raises $18.5M seed to end AI slop (Jun 2026)
  2. Amplify Partners: Kill the Slop — announcing our investment in Taste (16 Jun 2026)
  3. Latitud: The taste layer for the AI ecosystem — why we invested in Taste Labs (16 Jun 2026)
  4. TBPN Digest: Taste Labs founder raises $18.5M (18 Jun 2026)
  5. AI Engineer: Thais Castello Branco speaker page
  6. Taste Labs: A manifesto for judgement (Thais Castello Branco, 16 Jun 2026)
  7. tastelabs.com
  8. Taste Makers community (tastemakers.tastelabs.com)
  9. Taste Labs: Design Research Engineer posting
  10. Thais Castello Branco on X: introducing Taste Labs