---
title: An ex-OpenAI researcher just deleted language from the LLM...
link: https://www.youtube.com/watch?v=TbkUKCm3CHQ
source: youtube-com-fireship
published: 2026-09-21T17:52:29Z
updated: 2026-09-21T17:55:01Z
first_seen: 2026-09-21T21:01:27.933476777Z
authors:
- Fireship
summary: |-
  Mux is the video API that translates audio and answers questions about your video. Get $50 in free credits: https://mux.com/fireship

  Ex-OpenAI researcher Diogo Almeida spent two years in stealth building Jev, a "System 1" AI model that can't talk or write code but claims to be 200x faster, 400x cheaper, and hallucination-free. Let's dive in.

  Want more Fireship?

  🗞️ Newsletter: https://bytes.dev
  🧠 Courses: https://fireship.dev
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---

Mux is the video API that translates audio and answers questions about your video. Get $50 in free credits: https://mux.com/fireship

Ex-OpenAI researcher Diogo Almeida spent two years in stealth building Jev, a "System 1" AI model that can't talk or write code but claims to be 200x faster, 400x cheaper, and hallucination-free. Let's dive in.

Want more Fireship?

🗞️ Newsletter: https://bytes.dev\
🧠 Courses: https://fireship.dev