# Ex-Anthropic researcher says roadshow chart drove him out

> Ex-Anthropic researcher Jacob Coxon claims Anthropic's IPO roadshow chart on compute multipliers influenced his decision to quit.
- Title: Ex-Anthropic researcher says roadshow chart drove him out
- Summary: Ex-Anthropic researcher Jacob Coxon claims Anthropic's IPO roadshow chart on compute multipliers influenced his decision to quit.
- Keywords: anthropic, jacob coxon, compute multipliers, ipo roadshow, pre-training compute, mythos model, Dealroom
- Source: Dealroom — https://dealroom.co/news/172755-ex-anthropic-researcher-jacob-coxon-says-a-roadshow-chart-of-anthropic-s
- Published: 2026-11-14T15:00:00+00:00
- Read time: 1 min
- Topics: anthropic, jacob coxon, compute multipliers, ipo roadshow, pre-training compute, mythos model, startups, business
## Jacob Coxon's warning
Ex-Anthropic researcher Jacob Coxon quit in September with a warning the AI race is 'gambling with our lives'.

> gambling with our lives
## Coxon's roadshow chart
Coxon shared a chart from Anthropic's IPO roadshow showing pre-training compute multipliers from July 2024 to October 2026.
## Coxon's interpretation
Coxon says the logarithmic chart shows continued superexponential algorithmic progress, not just compounding efficiency gains.

> continued superexponential algorithmic progress
## Coxon's concerns
Coxon wants frontier development paused next year to let competitors catch up, saying it would only harm OpenAI and Anthropic.
## Anthropic's response
Anthropic says compute multipliers are central to its IPO, with a 4x multiplier meaning training the same model with a quarter of the compute.
## Key takeaway

Ex-Anthropic researcher Jacob Coxon says Anthropic's roadshow chart of pre-training compute multipliers helped drive him out of the company.