As of: 2026-10-12 07:22 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/p/x-zephyr_z9-2108959348408143990/

# Zephyr: a 100B-parameter phone model likely means ~25 GB after quantization, late 2028 or early 2029

Zephyr (@zephyr_z9), X, 2026-10-10.
Source: https://x.com/zephyr_z9/status/2108959348408143990

## Why it matters

The technical estimate Elon Musk replied to (235k views).

## Summary

Hardware commentator @zephyr_z9 guesses the 100-billion-parameter phone model would be a mixture-of-experts model reduced 'to 25GB thru quantization' and achievable 'by late 2028 or early 2029'. Speculation, not sourced.

_Metrics read 2026-10-12 via api.fxtwitter.com: 235,034 views, 1,090 likes._

## Archived text

> Hmmm...
> They probably reduce the size of the model to 25GB thru quantization (it will be an MoE)
> z NAND-O sampling is in 2028
> They probably can achieve this by late 2028 or early 2029
> 
> > Quoting @firesidealpha: Qualcomm CEO reveals AI companies want phones running 100-billion-parameter models continuously by 2028--and confirms some are building phones
> > 
> > Cristiano Amon: “I have to be careful not to disclose names, but some AI companies—some of the companies at the forefront of AI—are telling Qualcomm, ‘By 2028, I need to make sure that I have the ability to run at least a 100-billion-parameter model in a phone, and I need to have this thing running kind of all the time.’”
> > 
> > Alex Heath: “So you’re saying there are AI companies that are talking about—”
> > 
> > Cristiano Amon: “Well, AI companies are starting to do phones.”

Archived 2026-10-12 via fxtwitter (unofficial).
Counts: 235,677 views, 1,093 likes, 49 reposts, 29 replies (at fetch time)

## Cited in

- 2026-10-08: [Qualcomm CEO Cristiano Amon](https://postcutoff.com/e/2026-10-08-qualcomm-amon-ai-labs-100b-parameter-phones/)

## People in this post

- [Elon Musk](https://postcutoff.com/person/elon-musk/), CEO, Tesla and SpaceX (including SpaceXAI / xAI)