New Unified 52.6B-Token Corpus for Biological LLM Pre-training

Hyunjin Seo, Hyeon Hwang, Gyubok Lee, Jay Shin, Jimin Park, Taesoo Kim, Sanghoon Lee, Hongjoon Ahn, Sungjun Han, Sangwon Jung· July 13, 2026 View original

Summary

Researchers introduce TheBioCollection, a massive 52.6 billion-token corpus that unifies disparate biological resources into a training-ready format for large language models (LLMs). This corpus significantly enhances biological understanding in LLMs, improving performance across molecular, protein, genomic, and cellular domains.

The development of large language models specifically for biology (BioLMs) has highlighted a critical need for comprehensive training corpora that can instill a deep understanding of biological concepts. Existing biological data, scattered across various molecular databases, protein repositories, genomic annotations, and other resources, has been fragmented and difficult to integrate for unified language model training. To address this, TheBioCollection has been created: a pre-training-scale corpus comprising 52.6 billion tokens. This corpus systematically converts these heterogeneous biological resources into a cohesive, training-ready format, encompassing data related to small molecules, proteins, genomic sequences, cells, and biological pathways. Beyond mere consolidation, TheBioCollection enriches each record with computationally derived biological properties and introduces new instruction tasks to cover capabilities often overlooked by current corpora. Accompanying the corpus is TheBioCollection-Eval, a matched evaluation suite designed to probe recognition, generation, and prediction abilities across various biological domains. Training a base Gravity-16B-A3B architecture on TheBioCollection more than doubled its overall score on this evaluation suite, with improvements observed in every domain, while largely preserving its general linguistic abilities. This demonstrates the corpus's effectiveness in endowing LLMs with genuine biological intelligence.

Why it matters

BioTech and Pharma professionals can leverage LLMs trained on this comprehensive corpus for accelerated drug discovery, personalized medicine, and deeper biological insights, leading to faster research and development cycles.

How to implement this in your domain

  1. 1Access TheBioCollection corpus to pre-train or fine-tune large language models for biological applications.
  2. 2Utilize TheBioCollection-Eval to benchmark the biological understanding and performance of your BioLMs.
  3. 3Integrate BioLMs trained on this corpus into drug discovery pipelines for target identification or lead optimization.
  4. 4Explore the corpus's enriched data and instruction tasks to develop novel AI applications in genomics or proteomics.

Who benefits

BiotechnologyPharmaceuticalsHealthcareLife SciencesAcademia

Key takeaways

  • TheBioCollection is a 52.6B-token corpus unifying diverse biological data for LLM training.
  • It converts scattered resources into a cohesive, training-ready format across biological domains.
  • The corpus enriches records with tool-computed properties and new instruction tasks.
  • Training on TheBioCollection significantly improves BioLM performance on biological tasks.

Original post by Hyunjin Seo, Hyeon Hwang, Gyubok Lee, Jay Shin, Jimin Park, Taesoo Kim, Sanghoon Lee, Hongjoon Ahn, Sungjun Han, Sangwon Jung

"arXiv:2607.08803v1 Announce Type: cross Abstract: The push toward large language models for biology (BioLM) has created a need for training corpora that can endow models with a genuine understanding of biology. However, existing biological resources, such as molecular databases,…"

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Originally posted by Hyunjin Seo, Hyeon Hwang, Gyubok Lee, Jay Shin, Jimin Park, Taesoo Kim, Sanghoon Lee, Hongjoon Ahn, Sungjun Han, Sangwon Jung on X · view source

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