Model reference · open weights

bloom

LLMs bigscience Text gen 3 builds Its own licence terms 454k dl/mo

bloom is an open-weight language model from bigscience. bloom-3b (FP16) weighs 6.0 GB; the smallest configuration that runs it is RTX 3060 12 GB.

  • Bloom-560m is a transformer-based language model developed by BigScience for text generation and as a pretrained base for downstream tasks.
  • It contains 559 million parameters and supports 45 natural languages and 12 programming languages.
  • The model is released under the bigscience-bloom-rail-1.0 license.

Summary of the bigscience/bloom-560m model card, 2026-10-01. The estimate below is for another build of the family.

What it is

Released bybigscience
Released2022-05-19
Parameters559M
VRAM6.0 GB for the weights

What it runs on

Memory and cards for bloom-3b (FP16)

6.0 GBweights, file size
888 MBruntime overhead, at least

How much memory each request adds isn't estimated yet for this architecture. The weights need at least the cards below, plus room for the context.

CardWeights alone
RTX 3060 12 GBfits
RTX 4060 Ti 16 GBfits
RTX 3090 24 GBfits
RTX 4090 24 GBfits
RTX 5090 32 GBfits
L40S 48 GBfits
A100 80 GBfits
H100 80 GBfits
RTX PRO 6000 Blackwell 96 GBfits
DGX Spark (GB10) 128 GB unifiedfits
H200 141 GBfits
B200 180 GBfits

Builds

Sizes, precisions & builds

BuildParamsPrecisionWeightsSmallest setup
bloom-560m ↗ 559MFP16 1.1 GBRTX 3060 12 GB
bloom-3b (above) ↗ 3.0BFP16 6.0 GBRTX 3060 12 GB
bloom ↗ 176.2BBF16 352 GB4× H200 141 GB

From the model card

What bigscience says about bloom

Read the model card

Version 1.0 / 26.May.2022

Model Card for Bloom-560m

Table of Contents

  1. Model Details
  2. Uses
  3. Bias, Risks, and Limitations
  4. Recommendations
  5. Training Data
  6. Evaluation
  7. Environmental Impact
  8. Technical Specifications
  9. Citation
  10. Glossary and Calculations
  11. More Information
  12. Model Card Authors
  13. Model Card Contact

Model Details

Model Description

This section provides information for anyone who wants to know about the model.

  • Developed by: BigScience (website)

    • All collaborators are either volunteers or have an agreement with their employer. (Further breakdown of participants forthcoming.)
  • Model Type: Transformer-based Language Model

  • Version: 1.0.0

  • Languages: Multiple; see training data

  • License: RAIL License v1.0 (link)

  • Release Date Estimate: Monday, 11.July.2022

  • Funded by:

    • The French government.

    • Hugging Face (website).

    • Organizations of contributors. (Further breakdown of organizations forthcoming.)

Uses

This section addresses questions around how the model is intended to be used, discusses the foreseeable users of the model (including those affected by the model), and describes uses that are considered out of scope or misuse of the model. It provides information for anyone considering using the model or who is affected by the model.

Intended Use

This model is being created in order to enable public research on large language models (LLMs). LLMs are intended to be used for language generation or as a pretrained base model that can be further fine-tuned for specific tasks. Use cases below are not exhaustive.

Direct Use
  • Text generation

  • Exploring characteristics of language generated by a language model

    • Examples: Cloze tests, counterfactuals, generations with reframings
Downstream Use
  • Tasks that leverage language models include: Information Extraction, Question Answering, Summarization

Misuse and Out-of-scope Use

This section addresses what users ought not do with the model.

See the BLOOM License, Attachment A, for detailed usage restrictions. The below list is non-exhaustive, but lists some easily foreseeable problematic use cases.

Out-of-scope Uses

Using the model in high-stakes settings is out of scope for this model.  The model is not designed for critical decisions nor uses with any material consequences on an individual's livelihood or wellbeing. The model outputs content that appears factual but is not correct.

Out-of-scope Uses Include:
  • Usage in biomedical domains, political and legal domains, or finance domains

  • Usage for evaluating or scoring individuals, such as for employment, education, or credit

  • Applying the model for critical automatic decisions, generating factual content, creating reliable summaries, or generating predictions that must be correct

Misuse

Intentionally using the model for harm, violating human rights, or other kinds of malicious activities, is a misuse of this model. This includes:

  • Spam generation

  • Disinformation and influence operations

  • Disparagement and defamation

  • Harassment and abuse

  • Deception

  • Unconsented impersonation and imitation

  • Unconsented surveillance

  • Generating content without attribution to the model, as specified in the RAIL License, Use Restrictions

Intended Users

Direct Users
  • General Public

  • Researchers

  • Students

  • Educators

  • Engineers/developers

  • Non-commercial entities

  • Community advocates, including human and civil rights groups

Indirect Users
Others Affected (Parties Prenantes)
  • People and groups referred to by the LLM

  • People and groups exposed to outputs of, or decisions based on, the LLM

  • People and groups whose original work is included in the LLM

Bias, Risks and Limitations

This section identifies foreseeable harms and misunderstandings.

Model may:

  • Overrepresent some viewpoints and underrepresent others

  • Contain stereotypes

  • Contain personal information

  • Generate:

    • Hateful, abusive, or violent language

    • Discriminatory or prejudicial language

    • Content that may not be appropriate for all settings, including sexual content

  • Make errors, including producing incorrect information as if it were factual

  • Generate irrelevant or repetitive outputs

Recommendations

This section provides information on warnings and potential mitigations.

  • Indirect users should be made aware when the content they're working with is created by the LLM.

  • Users should be aware of Risks and Limitations, and include an appropriate age disclaimer or blocking interface as necessary.

  • Models pretrained with the LLM should include an updated Model Card.

  • Users of the model should provide mechanisms for those affected to provide feedback, such as an email address for comments.

Training Data

*This section provides a high-level overview of the training data. It is relevant for anyone who wants to know the basics of w

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

Benchmarks

Reported results

As published on the model card: the maker's own numbers, not measured by AxForge.

TaskDatasetMetricScore
text generationarc_challengeacc0.280
text generationarc_easyacc0.595
text generationaxbacc0.443
text generationaxgacc0.500
text generationboolqacc0.617
text generationcbacc0.304
text generationcolaacc0.611
text generationcopaacc0.630
text generationcrows_pairs_englishacc0.497
text generationcrows_pairs_frenchacc0.503
text generationdiablaacc0.289
text generationgsarti/flores_101_afrbyte_perplexity6.501
text generationgsarti/flores_101_amhbyte_perplexity3.973
text generationgsarti/flores_101_arabyte_perplexity1.808
text generationgsarti/flores_101_asmbyte_perplexity5.699
text generationgsarti/flores_101_astbyte_perplexity3.925
text generationgsarti/flores_101_azjbyte_perplexity6.943
text generationgsarti/flores_101_belbyte_perplexity3.614
text generationgsarti/flores_101_benbyte_perplexity5.121
text generationgsarti/flores_101_bosbyte_perplexity5.653
text generationgsarti/flores_101_bulbyte_perplexity2.701
text generationgsarti/flores_101_catbyte_perplexity2.305
text generationgsarti/flores_101_cebbyte_perplexity6.291
text generationgsarti/flores_101_cesbyte_perplexity5.447
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