Millie Marconi
Founder, TestFeed
“Reputational risks can honestly be more devastating than business risk. So it made me more intentional about what risks to take.” Hear the conversation
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TestFeed
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Millie Marconi on Building an AI to Test Content Before You Post ItAbout TestFeed
TestFeed lets Shopify and retail brands test prices, product claims, photos and offers on simulated shoppers built from their own customer data. It comes from Yesterday, the startup Millie Marconi and Katharine Suy co-founded in August 2023, which received pre-seed investment from Antler. Yesterday's first product used AI to analyse talent markets and compare a company's job offers with competitors' to shorten hiring.
- Sector
- AI software for retail product testing (formerly HR tech)
- Business model
- B2B SaaS
- Founded
- 2023
- Founders
- Millie Marconi, Katharine Suy
- Latest round
- Pre-seed (Antler) (2024)
Sources: testfeed.ai, yesterday.work, startupdaily.net
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Antler.
Sources: startupdaily.net
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Spot something wrong? Suggest a correctionUpdated 28 October 2026
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