About
Charlie Guo previously worked as a Developer Experience Engineer at OpenAI and has background in software engineering and artificial intelligence.
Charlie Guo @charlierguo
Crazy that our models can do Fields level math and Iβm using them to archive spam emails https://t.co/umEt37tdro
Aug 1, 2026 Β· β₯ 16 Β· β 1
Charlie Guo @charlierguo
p a r e t o https://t.co/78UUdc6pyb
Jul 30, 2026 Β· β₯ 11
Charlie Guo @charlierguo
Still waiting for a reason to try Terra and Luna? GPT-5.6 Luna is now 80% cheaper (!), Terra is 20% cheaper, and Solβs new Fast Mode is up to 2.5x faster. Excited to see what people build at the edge of the Pareto frontier! Read the blog here: https://t.co/Tzaqf24jyo https://t.co/bgRjJhEKeM
Jul 30, 2026 Β· β₯ 16
Founder at FanHeroYC S13
Intro paths
Charlie went through Y Combinator (Summer 2013) β any YC alum in your network can reach them through the YC community.
In turn, Charlie can intro founders to FanHero's investors below.
FanHero's investors Β· 1
Co-founders at FanHero
Experience
- OpenAIDeveloper Experience Engineercurrent2025 β presentSan Francisco, California, United States
- Artificial IgnoranceAuthorcurrent2023 β present
- PulleyStaff AI Engineer2024 β 2025
- CrowdmadeFounder/CTO2014 β 2024San Francisco Bay Area
- Andreessen HorowitzTechnical Consultant2013 β 2014Menlo Park, CA
- FanHeroCo-Founder2013Mountain View, CA
- Stanford UniversityTeaching Assistant / Section Leader2011 β 2013Stanford, CA
- ClassOwlCo-Founder & CTO2010 β 2013Stanford, CA
- Palantir TechnologiesSoftware Engineering Intern2012Palo Alto, CA
- Jelli IncSoftware Engineering Intern2010San Mateo, CA
Education
- Stanford UniversityBachelor of Science (B.S.), Computer Science2009 β 2013
- Y CombinatorS132013
- Stanford UniversityMaster of Science (M.S.) (Started), Computer Science
Skills & more
From Charlie's professional profile.
Founder mafias
Y Combinator mafia8,668
Also came through, then founded or led a company.
+ 8,661 more
Stanford University mafia721
Also came through, then founded or led a company.
+ 714 more
OpenAI mafia50
Also came through, then founded or led a company.
+ 43 more
Andreessen Horowitz mafia33
Also came through, then founded or led a company.
+ 26 more
Pulley mafia9
Also came through, then founded or led a company.
+ 2 more
Same school
Also attended Stanford University2,000
+ 1,994 more
Also attended Y Combinator2,000
+ 1,994 more
Shared employers
Also worked at Pulley9
+ 3 more
Also worked at Crowdmade1
Also worked at Andreessen Horowitz230
+ 224 more
Also worked at Stanford University629
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+ 623 more