AlphaZero
No estimate
No hardware requirements for this model
The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.
On record
Full specification
Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.
Origin
Who built this model, where, and when it was published.
- Organisation
- DeepMind
- Organisation type
- Industry
- Country
- United Kingdom of Great Britain and Northern Ireland
- Published
- 5 December 2017
- Authors
- David Silver, Thomas Hubert, Julian Schrittwieser, Ioannis Antonoglou, Matthew Lai, Arthur Guez, Marc Lanctot, Laurent Sifre, Dharshan Kumaran, Thore Graepel, Timothy Lillicrap, Karen Simonyan, Demis Hassabis
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Games
- Task
- Chess, Shogi, Go
- Approach
- Self-supervised learning
Size
How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.
- Training data
- 3,520,000,000 tokens
"We trained a separate instance of AlphaZero for each game. Training proceeded for 700,000 steps"
Training compute
The arithmetic performed to train the model, measured in floating-point operations. It is a measure of what the training run cost, not of how fast the finished model answers you.
- Training compute
- 1.1 × 10²⁰ FLOP
- How it was established
- Third-party estimation
The Go version (there were versions trained individually for three different games) was trained for 34 hours using 5k TPUv1 for data generation 64 TPUv2 for parameter updating I used the PCD chip entries for the lowest precision numerical format we had for each, which was INT8 for TPUv1 and FP16 for TPUv2 Direct training compute: 1.06e20 FLOPs
The training run
What it physically took to train: which chips, how many, for how long, and what that drew from the wall.
- Training hardware
- Google TPU v2,Google TPU v1
- Chips used
- 5,064
- Wall-clock time
- 24 hours
- Compute cost
- $229,919
Availability
Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.
- Weights
- Closed — provider access only
- Model access
- Unreleased
- Training code
- Unreleased
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Why it is tracked
- Highly cited,Historical significance
- Record confidence
- Likely
- Citations
- 2,071
Sources
Where this record came from and when it was last checked.
- Reference
- Mastering Chess and Shogi by Self-Play with a General Reinforcement Learning Algorithm
- Last updated
- 25 May 2026
What the numbers mean
What this model is
AlphaZero was published by DeepMind, in United Kingdom of Great Britain and Northern Ireland, in December 2017. The organisation is categorised as industry.
It works in Games, and is recorded as doing chess, Shogi, Go.
This is a closed model: the trained values stayed with whoever produced them, and there is no local version to run.
What went into building it
Training it took roughly 1.1 × 10²⁰ FLOP of computation, on Google TPU v2,Google TPU v1 — a measure of what producing the model cost, not of how fast it answers.
It was trained on about 3,520,000,000 tokens of text.
The reason it appears in this catalogue at all is highly cited,Historical significance.
Answers
AlphaZero — common questions
How much compute was used to train AlphaZero?
Around 1.1 × 10²⁰ FLOP, on Google TPU v2,Google TPU v1. That measures what producing the model cost and says nothing about how quickly it answers once trained — inference speed comes from memory bandwidth, not from the training budget.
What GPU do I need to run AlphaZero?
None. AlphaZero is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.
Is AlphaZero open source?
No. AlphaZero has not had its weights published, so it exists only as a service controlled by its owner.
How many parameters does AlphaZero have?
No parameter count has been published for AlphaZero, which is why no memory or speed figure appears on this page.
Who created AlphaZero?
AlphaZero was published by DeepMind, based in United Kingdom of Great Britain and Northern Ireland, categorised as industry.
When was AlphaZero released?
AlphaZero was published in December 2017. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.
What is AlphaZero used for?
AlphaZero works in Games, and is recorded as handling chess, Shogi, Go. Models frequently carry more than one of each, and the tags describe purpose rather than capability limits.
The other direction
Looking at it from the other side?
This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.