Sophia Luo

Sophia Luo

Partner atGreylockFirm active Sep 29California

Sophia Luo is a Partner at Greylock, focusing on AI-native applications and enabling infrastructure. She previously worked at Scale AI and Character AI, and has made angel investments in companies like Cognition.

What Sophia can write

Writes checks of$1M to $30M+
Comes in atSeed, Series ACan lead the round
Ownership target> 12%At first check
Email the firm[email protected]The firm's own inbox for founders.

Greylock writes $1M to $30M+ checks, larger than 83% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: Greylock.

Career

  1. Scale AI · engineer
  2. Scale AI · product manager
  3. Character AI · product engineer
  4. Character.AI · Product Engineer
  5. Greylock · Partner
    Now

Investments named in public bios

CognitionMercorArphie AIParaformRaindrop

Focus

ai-native applicationsenabling infrastructure

Education

MIT, Bachelors in Computer Science and Mathematical Economics

Also at Greylock

Partners like Sophia

At firms with a similar stage, sector and check size.

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One email when Sophia's firm raises a fund, adds a partner or shows new activity.

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Questions

Who is Sophia Luo?

Sophia Luo is a Partner at Greylock, focusing on AI-native applications and enabling infrastructure. She previously worked at Scale AI and Character AI, and has made angel investments in companies like Cognition.

How much does Sophia Luo invest?

Sophia Luo invests through Greylock, which writes checks of $1M to $30M+ at seed, series a.

How do I pitch Sophia Luo?

Email [email protected], the firm's inbox for founders, and name Sophia in the subject. A warm intro from a founder Greylock backed works better.

What did Sophia Luo do before Greylock?

engineer at Scale AI; product manager at Scale AI; product engineer at Character AI; Product Engineer at Character.AI.

Last updated 2026-10-15. Is this you? Ask for a correction.