Josh You

Josh You

Josh You is a researcher who collects and analyzes data on AI systems. Before Epoch AI, he worked as a software engineer and a content writer, and graduated from Carleton College with a degree in Computer Science and Mathematics.

josh@epoch.ai

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Five hyperscalers now own over two-thirds of global AI compute
Data Insight
Apr. 14, 2026
Five hyperscalers now own over two-thirds of global AI compute

By Luke Emberson, Josh You, and Venkat Somala

What does the war in Iran mean for AI?
Newsletter
Apr. 10, 2026
What does the war in Iran mean for AI?

A prolonged Hormuz crisis probably won't derail the compute buildout, but it could slow data center expansion and disrupt Gulf investment flows into AI.

By Josh You

Google controls the most AI computing power, driven by its custom TPUs
Data Insight
Apr. 7, 2026
Google controls the most AI computing power, driven by its custom TPUs

By Luke Emberson, Josh You, and Venkat Somala

Introducing the AI Chip Owners Explorer
Update
Apr. 6, 2026
Introducing the AI Chip Owners Explorer

We announce our new AI Chip Owners explorer, showing which companies own the world’s leading AI chips.

By Josh You and Venkat Somala

Global AI power capacity is now comparable to peak power usage of New York State
Data Insight
Jan. 16, 2026
Global AI power capacity is now comparable to peak power usage of New York State

By Yafah Edelman, Josh You, Venkat Somala, and Luke Emberson

Global AI computing capacity is doubling every 7 months
Data Insight
Jan. 9, 2026
Global AI computing capacity is doubling every 7 months

By Josh You, Venkat Somala, Yafah Edelman, and Luke Emberson

Is almost everyone wrong about America’s AI power problem?
Newsletter
Dec. 17, 2025
Is almost everyone wrong about America’s AI power problem?

Why power is less of a bottleneck than you think.

By Anson Ho, Yafah Edelman, Josh You, and Jean-Stanislas Denain

Most of OpenAI’s 2024 compute went to experiments
Data Insight
Oct. 10, 2025
Most of OpenAI’s 2024 compute went to experiments

By Josh You

GPT-5 and GPT-4 were both major leaps in benchmarks from the previous generation
Data Insight
Aug. 29, 2025
GPT-5 and GPT-4 were both major leaps in benchmarks from the previous generation

By Luke Emberson and Josh You

How much power will frontier AI training demand in 2030?
Paper
Aug. 11, 2025
How much power will frontier AI training demand in 2030?

The power required to train the largest frontier models is growing by more than 2x per year, and is on trend to reaching multiple gigawatts by 2030.

By Josh You and David Owen

Newsletter
May 9, 2025
How far can reasoning models scale?

Available evidence suggests that rapid growth in reasoning training can continue for a year or so.

By Josh You

LLM responses to benchmark questions are getting longer over time
Data Insight
Apr. 17, 2025
LLM responses to benchmark questions are getting longer over time

By Luke Emberson, Ben Cottier, Josh You, Tom Adamczewski, and Jean-Stanislas Denain

Newsletter
Feb. 7, 2025
How much energy does ChatGPT use?

This Gradient Updates issue explores how much energy ChatGPT uses per query, revealing it's 10x less than common estimates.

By Josh You

How far behind are open models?
Report
Nov. 4, 2024
How far behind are open models?

We compare open and closed AI models, and study how openness has evolved. The best open model today is on par with closed models in performance and training compute, but with a lag of about one year.

By Ben Cottier, Josh You, Natalia Martemianova, and David Owen

Leading AI companies have hundreds of thousands of cutting-edge AI chips
Data Insight
Oct. 9, 2024
Leading AI companies have hundreds of thousands of cutting-edge AI chips

By Josh You and David Owen

Can AI scaling continue through 2030?
Report
Aug. 20, 2024
Can AI scaling continue through 2030?

We investigate the scalability of AI training runs. We identify electric power, chip manufacturing, data and latency as constraints. We conclude that 2e29 FLOP training runs will likely be feasible by 2030.

By Jaime Sevilla, Tamay Besiroglu, Ben Cottier, Josh You, Edu Roldán, Pablo Villalobos, and Ege Erdil

Almost half of large-scale models have published, downloadable weights
Data Insight
Jun. 19, 2024
Almost half of large-scale models have published, downloadable weights

By Ben Cottier, Josh You, and Natalia Martemianova

Language models compose the large majority of large-scale AI models
Data Insight
Jun. 19, 2024
Language models compose the large majority of large-scale AI models

By Robi Rahman and Josh You

Chinchilla scaling: A replication attempt
Paper
Apr. 17, 2024
Chinchilla scaling: A replication attempt

We replicate Hoffmann et al.’s estimation of a parametric scaling law and find issues with their estimates. Our estimates fit the data better and align with Hoffmann’s other approaches.

By Tamay Besiroglu, Ege Erdil, Matthew Barnett, and Josh You

Tracking large-scale AI models
Report
Apr. 5, 2024
Tracking large-scale AI models

We present a dataset of 81 large-scale models, from AlphaGo to Gemini, developed across 18 countries, at the leading edge of scale and capabilities.

By Robi Rahman, David Owen, and Josh You