Parti
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
- Google Research
- Organisation type
- Industry
- Country
- United States of America
- Published
- 22 June 2022
- Authors
- Jiahui Yu, Yuanzhong Xu, Jing Yu Koh, Thang Luong, Gunjan Baid, Zirui Wang, Vijay Vasudevan, Alexander Ku, Yinfei Yang, Burcu Karagol Ayan, Ben Hutchinson, Wei Han, Zarana Parekh, Xin Li, Han Zhang, Jason Baldridge, Yonghui Wu
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Image generation
- Task
- Text-to-image, Image generation
- Approach
- Self-supervised learning
- Numerical format
- BF16
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.
- Parameters
- 20B
- Training data
- 4,718,592,000,000 tokens
Abstract: "we achieve consistent quality improvements by scaling the encoder-decoder Transformer model up to 20B parameters"
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
- 5.1 × 10²³ FLOP
- How it was established
- Operation counting
Calculated from architecture. Does not take into account the encoding and decoding of text and images, only the transformer stack. Table 1 shows for the 20B model 16 encoder layers 64 decoder layers Dmodel = 4096 Dhidden = 16384 Num heads = 64 Just below table 1: "We use a maximum length of text tokens of 128, and the length of image tokens are fixed to 1024" I take the length of the sequence to be 100 for the encoder stack and 1024 for the decoder stack. Section 3, Training: "a total of 450…
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 v4
- Compute cost
- $427,179
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
"For these reasons, we have decided not to release our Parti models, code, or data for public use without further safeguards in place" https://sites.research.google/parti/
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Foundation model
- Yes
- Likely above 10²³ FLOP
- Yes
- Why it is tracked
- SOTA improvement
- Record confidence
- Confident
- Citations
- 1,476
"Second, we achieve consistent quality improvements by scaling the encoder-decoder Transformer model up to 20B parameters, with a new state-of-the-art zero-shot FID score of 7.23 and finetuned FID score of 3.22 on MS-COCO"
Sources
Where this record came from and when it was last checked.
- Reference
- Scaling Autoregressive Models for Content-Rich Text-to-Image Generation
- Last updated
- 25 May 2026
What the numbers mean
Where it came from
Parti was published by Google Research, in United States of America, in June 2022. industry is the category the publisher falls under.
It works in Image generation, and is recorded as doing text-to-image, Image generation.
Because the weights are not available, none of the hardware figures elsewhere on this site apply to it.
Training and provenance
Training it took roughly 5.1 × 10²³ FLOP of computation, on Google TPU v4 — a measure of what producing the model cost, not of how fast it answers.
Around 4,718,592,000,000 tokens went into training it.
Its inclusion criterion is sOTA improvement.
Answers
Parti — common questions
When was Parti released?
Parti was published in June 2022. 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 Parti used for?
Parti works in Image generation, and is recorded as handling text-to-image, Image generation. A model can carry several of each, so these are the areas it was built for rather than a limit on what it will attempt.
How much compute was used to train Parti?
Around 5.1 × 10²³ FLOP, on Google TPU v4. 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 Parti?
None. Parti 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 Parti open source?
No. Parti has not had its weights published, so it exists only as a service controlled by its owner.
How many parameters does Parti have?
Parti has 20B parameters. Abstract: "we achieve consistent quality improvements by scaling the encoder-decoder Transformer model up to 20B parameters". That figure is the total, and it is what decides how much memory the model needs — roughly half a gigabyte per billion at the compression most people use.
Who created Parti?
Parti was published by Google Research, based in United States of America, categorised as industry.
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.