A comprehensive guide covering BLOOM, the BigScience collaboration's 176-billion-parameter open-access multilingual language model released in 2022. Learn how BLOOM democratized access to large language models, established new standards for open science in AI, and addressed English-centric bias through multilingual training across 46 languages.

This article is part of the free-to-read History of Language AI book
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2022: BLOOM
The release of BLOOM (BigScience Large Open-science Open-access Multilingual Language Model) in 2022 marked a historic milestone in the democratization of large language model research, representing the first time a model of that scale (176 billion parameters) was made openly available to researchers and the public as an alternative to proprietary LLMs. Developed by the BigScience collaboration, a diverse international team of over 1000 researchers from more than 70 countries, BLOOM demonstrated that open, collaborative approaches to AI research could produce state-of-the-art language models while ensuring broader access and transparency. The model's multilingual capabilities, supporting 46 languages and 13 programming languages, represented a significant advance in inclusive AI development, addressing the bias toward English-centric models that had characterized much of the field. BLOOM's release marked a crucial step toward more equitable access to AI technology and established new standards for open science in artificial intelligence.
The Problem
The development of BLOOM was motivated by growing concerns about the concentration of AI capabilities in a few large technology companies and the resulting barriers to research and innovation. Most large language models developed by major tech companies were proprietary, with access restricted to internal researchers or limited through controlled APIs. This concentration of power raised concerns about the democratization of AI research and the potential for bias and misuse when AI capabilities are controlled by a small number of entities. The BigScience collaboration sought to address these concerns by developing an open, transparent, and accessible alternative that could be used by researchers worldwide.
The Solution
The technical development of BLOOM involved several key innovations that distinguished it from previous large language models. The model was trained on a diverse, multilingual dataset that included text from 46 languages, with particular attention to underrepresented languages and regions. The training data was carefully curated to ensure high quality and diversity, with efforts made to include content from a wide range of sources and perspectives. The model architecture was based on the transformer design, similar to GPT-3, but with modifications to better handle multilingual text and improve efficiency.
The training process for BLOOM was conducted using the Jean Zay supercomputer in France, with the entire process being documented and made transparent to the research community. The training data, model weights, and training code were all made publicly available, enabling researchers to understand exactly how the model was developed and to build upon the work. This level of transparency was unprecedented for a model of BLOOM's scale and represented a significant advance in open science practices for AI research.
Multilingual Capabilities
The multilingual capabilities of BLOOM represented a major advance in inclusive AI development. Previous large language models had been primarily trained on English text, leading to biases and limitations when applied to other languages. BLOOM's training on 46 languages helped to address these biases and made the model more useful for researchers and users worldwide. The model's ability to work across multiple languages also made it a valuable tool for cross-lingual research and applications.
Impact on AI Research
The open access nature of BLOOM had profound implications for AI research and development. By making the model freely available, the BigScience collaboration enabled researchers worldwide to conduct experiments and develop applications without the barriers imposed by proprietary models. This democratization of access was particularly important for researchers in developing countries and institutions without the resources to develop their own large language models. The open access also enabled more transparent evaluation and auditing of the model's capabilities and limitations.
Collaborative Development Model
The collaborative development process of BLOOM also represented a significant advance in how large-scale AI research can be conducted. The BigScience collaboration brought together researchers from diverse backgrounds and institutions, creating a more inclusive and representative approach to AI development. This collaborative model has influenced subsequent efforts to develop open AI systems and has demonstrated the value of diverse perspectives in AI research.
Broader Implications
The release of BLOOM also had important implications for the broader field of artificial intelligence and its relationship with society. The model's development and release demonstrated that it was possible to create state-of-the-art AI systems through open, collaborative processes, challenging the assumption that only large tech companies could develop such systems. The work also highlighted the importance of transparency and accountability in AI development, showing that open science practices could be applied to AI research.
Technical Legacy
The technical innovations developed for BLOOM have had broader implications for multilingual language modeling and open AI research. The model's architecture and training techniques have influenced subsequent efforts to develop multilingual language models. The open science practices established by the BigScience collaboration have also influenced other AI research projects and have helped to establish new standards for transparency and collaboration in AI development.
The success of BLOOM also had important implications for the development of AI policy and governance. The model's open access nature and transparent development process provided a concrete example of how AI research could be conducted in a more open and accountable manner. This has influenced discussions about AI governance and the importance of ensuring that AI capabilities are developed and deployed in ways that benefit society as a whole.
The work also demonstrated the importance of international collaboration in advancing AI research. The BigScience collaboration brought together researchers from around the world, creating a more diverse and inclusive approach to AI development. This international collaboration has influenced subsequent AI research projects and has helped to establish new models for global cooperation in AI research.
The release of BLOOM also highlighted the importance of addressing bias and ensuring inclusivity in AI development. The model's multilingual training and diverse development team helped to address some of the biases that had characterized previous large language models. This focus on inclusivity and bias reduction has influenced subsequent AI research and has helped to establish new standards for responsible AI development.
The success of BLOOM in 2022 represents a crucial milestone in the history of artificial intelligence and open science, demonstrating that state-of-the-art AI systems could be developed through open, collaborative processes. The breakthrough not only democratized access to large language models but also established new standards for transparency and collaboration in AI research. The technical innovations developed for BLOOM have had broader implications for multilingual language modeling and open AI research, and the work continues to influence research and development in AI today. The breakthrough stands as a testament to the power of open science and the importance of ensuring that AI technology is developed and deployed in ways that benefit society as a whole.
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Reference

About the author: Michael Brenndoerfer
All opinions expressed here are my own and do not reflect the views of my employer.
Michael currently works as an Associate Director of Data Science at EQT Partners in Singapore, where he drives AI and data initiatives across private capital investments.
With over a decade of experience spanning private equity, management consulting, and software engineering, he specializes in building and scaling analytics capabilities from the ground up. He has published research in leading AI conferences and holds expertise in machine learning, natural language processing, and value creation through data.
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