# SF has dozens of inference, RL environment, and GPU brokering startups

> Original title: throw a brick in SF and you’ll hit:

- Source: Yuchen Jin
- Published: 2026-10-31T17:12:02.000Z
- Bad Influence: https://badinfluence.news/items/bsbxvdxuj7yar0pe6jz49sntd
- Original: https://x.com/Yuchenj_UW/status/2116578959475535883

## Summary

Yuchen Jin says San Francisco has about 50 inference providers, 80 RL environment startups, and many people brokering 4090 GPUs. The post is a joke about how crowded the AI infrastructure scene there has become.

## Post

throw a brick in SF and you’ll hit:

50 inference providers
80 RL environment startups
4090 dudes brokering GPUs