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C2S-Scale

Parameters
27B
Published
Oct 11, 2025

C2S-Scale is an AI model developed by Google Research, Yale University, Google DeepMind, Brown University and University of Southern California (United States), first published in October 2025. It works in the language and biology domain, on tasks such as cell biology, rna sequence generation, language modeling/generation and question answering.

Epoch AI has no training-compute estimate for this model. The model has 27,000,000,000 parameters. It was trained on roughly 1B datapoints. Training ran on 256 Google TPU v4.

Access: Open weights (unrestricted). Its weights are openly available. It is built on top of Gemma 2 27B. Epoch AI rates the confidence of this record as likely.

Full record
Organization
Google Research, Yale University, Google DeepMind, Brown University, University of Southern California
Country of organization
United States
Domain
Language, Biology
Task
Cell Biology, RNA sequence generation, Language modeling/generation, Question answering
Compute estimation method
Operation counting
Parameters
27,000,000,000
Dataset size
1B
Training hardware
Google TPU v4
Chips used
256
Training power draw
170.0 kW
Model accessibility
Open weights (unrestricted)
Open weights
Yes
Base model
Gemma 2 27B
Epoch confidence
Likely
SourceEpoch AI, 'AI Models'. Published online at epoch.ai. Retrieved 2026-07-29 from https://epoch.ai/data/ai-models. Licensed under CC BY 4.0.
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