Rarebird
YC S20San Francisco, US · Founded 2020 · Delaware corporation · 5 employees · 10 known investors
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Rarebird produces specialty coffee containing paraxanthine (Px), a metabolite of caffeine that delivers energy and focus with fewer side effects than traditional caffeine. The company sells directly to consumers seeking smoother energy, better sleep, and reduced jitters compared to conventional coffee.
Also known as Revel Technologies
Founders & leadership· Y Combinator alumni (S20)
Rarebird was founded in 2020 by Jeffrey Dietrich.

Investors · 10
How we know: Y Combinator's founder network · firstround.com · Not right? Tell us
How we know: FundersClub's portfolio page · Y Combinator's founder network · Not right? Tell us
How we know: Jude Gomila's portfolio page · Not right? Tell us
How we know: Y Combinator's founder network · somacap.com · Not right? Tell us
How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the VCSheet dataset · Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$9M disclosed across 4 rounds · 2023–2024
▶$1MraisedOct 2024 · 1 investors · RetailingRule 506(b)
- Ann Dunn AndracchioDirector
- Jeffrey DietrichExecutive Officer, Director
- Offering amount
- $1M
- Amount sold
- $1M
- First sale
- Oct 2024
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$1.1MraisedOct 2024 · 4 investors · RetailingRule 506(b)
- Ann Dunn AndracchioDirector
- Jeffrey DietrichExecutive Officer, Director
- Offering amount
- $1.2M
- Amount sold
- $1.1M
- First sale
- Dec 2023
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$400KraisedSep 2023 · 2 investors · RetailingRule 506(b)
- Jeffrey DietrichExecutive Officer, Director
- Ann Dunn AndracchioDirector
- Offering amount
- $400K
- Amount sold
- $400K
- First sale
- Sep 2023
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$6.5MraisedJul 2023 · 27 investors · RetailingRule 506(b)
- Ann Dunn AndracchioDirector
- Jeffrey DietrichExecutive Officer, Director
- Offering amount
- $7.5M
- Amount sold
- $6.5M
- First sale
- Jul 2023
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Legal entities · 1
corporate structureIn the news
Frequently asked questions
- What does Rarebird do?
- Rarebird produces specialty coffee containing paraxanthine (Px), a metabolite of caffeine that delivers energy and focus with fewer side effects than traditional caffeine. The company sells directly to consumers seeking smoother energy, better sleep, and reduced jitters compared to conventional coffee.
- Who founded Rarebird?
- Rarebird was founded by Jeffrey Dietrich in 2020.
- Who are Rarebird's investors?
- Rarebird's investors include First Round Capital, FundersClub, Jude Gomila, Soma Capital, Y Combinator, AgFunder, Guardian Holdings, KdT Ventures and 2 more.
- How much funding has Rarebird raised?
- Rarebird has disclosed $9M raised across 4 rounds.
- Where is Rarebird headquartered?
- Rarebird is headquartered in San Francisco, US.





