Simon Mo (@simon_mo_) — Twitter Score 14 out of 1000

Simon Mo is a software engineer and entrepreneur who co-founded Inferact, an AI inference company, and serves as a core maintainer of vLLM. Simon Mo's Twitter Score is 14 out of 1000 as of September 2026, ranking #68,146 among 486,860 tracked accounts.

Simon Mo co-founded Inferact, which raised $150M at an $800M valuation in a round led by Andreessen Horowitz and Lightspeed, with additional investors participating. The company's focus is on making AI inference cheaper and faster, while sustaining vLLM as open-source infrastructure. Simon Mo previously worked at Anyscale as a software engineer before founding Inferact.

Simon Mo was recognized as a 2024 Sequoia Capital Open Source Fellow for contributions to vLLM. Simon Mo's account has accumulated 4,152 followers as of September 2026 and 470 posts, and has been mentioned by 17 accounts, with 28 total mentions.

Who follows Simon Mo on X?

The accounts that follow Simon Mo include 57 founders, 18 angel investors, 9 influencers and 3 VCs, among them Arjun Balaji, Andrew Chen, Dylan Field, Martin Shkreli, Knower and Robert Scoble.