Model reference · open weights

bloomz-petals

LLMs bigscience Text gen 1 build Licence not stated 37 dl/mo

bloomz-petals is an open-weight language model from bigscience. bloomz-petals (BF16) weighs 7.2 GB; the smallest configuration that runs it is L40S 48 GB.

For self-hosting, compare this build's requirements below with the GPU you plan to rent.

  • bloomz-petals is a text-generation model created by bigscience.
  • It is a post-processed version of bigscience/bloomz designed to run on the Petals swarm.
  • The model card directs users to the original model card for capabilities, specifications, and terms of use.

Summary of the bigscience/bloomz-petals model card, 2026-10-01

What it is

Released bybigscience
Released2023-01-16
VRAM7.2 GB for the weights

What it runs on

Memory and cards for bloomz-petals (BF16)

7.2 GBweights, file size
4.0 GBcache per 1K tokens
1.4 GBruntime overhead, at least
CardRequests at onceContext maxMemory
8K each32K each
RTX 3060 12 GB75511.6 GB
RTX 4060 Ti 16 GB1K15.4 GB
RTX 3090 24 GB3K23.4 GB
RTX 4090 24 GB3K23.4 GB
RTX 5090 32 GB5K31.0 GB
L40S 48 GB18K44.0 GB
A100 80 GB216K78.2 GB
H100 80 GB115K78.1 GB
RTX PRO 6000 Blackwell 96 GB219K93.8 GB
DGX Spark (GB10) 128 GB unified222K107 GB
H200 141 GB329K138 GB
B200 180 GB4138K176 GB
2× RTX 4090 24 GB
tensor parallel
18K23.4 GB a card
2× RTX 3090 24 GB
tensor parallel
18K23.4 GB a card
2× RTX 5090 32 GB
tensor parallel
112K31.0 GB a card
2× L40S 48 GB
tensor parallel
218K44.0 GB a card
4× H100 80 GB
tensor parallel
8266K78.1 GB a card
4× A100 80 GB
tensor parallel
9272K78.2 GB a card
2× B200 180 GB
tensor parallel
9278K176 GB a card
4× RTX PRO 6000 Blackwell 96 GB
tensor parallel
10281K93.8 GB a card
4× H200 141 GB
tensor parallel
153124K138 GB a card
Memory needed at each load
Requests at once8K tokens each32K tokens each
141.5 GB140 GB
5173 GB666 GB
8272 GB1061 GB
16535 GB2113 GB
321061 GB4218 GB
642113 GB8427 GB

One card, with vLLM's small-card settings.

From the model card

What bigscience says about bloomz-petals

Read the model card

This model is a version of bigscience/bloomz post-processed to be run at home using the Petals swarm.

Please check out:

  • The original model card to learn about the model's capabilities, specifications, and terms of use.
  • The Petals repository to learn how to install Petals and run this model over the Petals swarm.

We provide minimal code examples below.

Using the model

from petals import DistributedBloomForCausalLM

model = DistributedBloomForCausalLM.from_pretrained("bigscience/bloomz-petals")
# Embeddings & prompts are on your device, BLOOM blocks are distributed across the Internet

inputs = tokenizer("A cat sat", return_tensors="pt")["input_ids"]
outputs = model.generate(inputs, max_new_tokens=5)
print(tokenizer.decode(outputs[0]))  # A cat sat on a mat...

Serving the model blocks

python -m petals.cli.run_server bigscience/bloomz-petals

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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