Gemma 3 12B PT

Google DeepMind

Parameters

12.0B

Architecture

Transformer (decoder-only)

Released

27.02.2025

License

Gemma Terms of Use

Open Weights Commercial Use Multimodal BF16 Gemma 3 English Multilingual (140+ languages)

Input Modalities

text image

Output Modalities

text

Context (native)

131,072 tokens

Context (extended)

131,072 tokens

Openness Index Score 70.0/100

About

Gemma 3 12B PT is the pre-trained-variant record for Google's Gemma 3 12B model - a lightweight, state-of-the-art open multimodal transformer (12B parameters, dense) built from the same research and technology used to create the Gemini models, released February 27, 2025 under the Gemma Terms of Use. The underlying google/gemma-3-12b repository is access-gated; this record carries the pre-training (PT) benchmark scores for the 12B model.

Gemma 3 handles text and image input and generates text output, with a 128K context window and multilingual support in over 140 languages. The 12B model was trained on 12 trillion tokens of web documents, code, mathematics and images. Its architecture interleaves local sliding-window and global attention layers in a 5:1 local-global pattern, applies QK-Norm for stable attention, and uses a SigLIP-based vision encoder for image understanding.

Training Data 12 trillion tokens (web documents, code, mathematics, images) in 140+ languages

Benchmark Scores

Benchmark Score Date Standing
BoolQ
reasoning
81.25%
27.02.2025
#2/4
better than 67%
PIQA
reasoning
84.21%
27.02.2025
#2/4
better than 67%
SocialIQA
reasoning
75.00%
27.02.2025
#2/4
better than 67%
TriviaQA
knowledge
84.03%
27.02.2025
#2/4
better than 67%
Natural Questions
knowledge
82.34%
27.02.2025
#2/4
better than 67%
BIG-Bench Hard
reasoning
75.94%
27.02.2025
#5/8
better than 43%
DROP
reasoning
85.63%
27.02.2025
#2/4
better than 67%
MMLU Pro COT
knowledge
31.69%
27.02.2025
#3/4
better than 33%
AGIEval
reasoning
63.49%
27.02.2025
#2/3
better than 50%
MATH
math
74.03%
27.02.2025
#2/3
better than 50%

Architecture

Decoder Block input Embedding Full Attention Dense FFN SwiGLU Final Norm LM Head output
Attention
Grouped Query Attention
Context
131K tokens
Parameters
12000M

Source: extracted model record · model repo

Type: Transformer (decoder-only)
Attention: Multi-Head Attention with GQA (Grouped Query Attention)
Decoder: Transformer
Routing: N/A (dense model)

Training Pipeline

  1. 1
    pretraining

    Pretraining on 12 trillion tokens

    Pretrained on 12 trillion tokens of web documents, code, mathematics, and images in 140+ languages. Trained on TPU (TPUv4p, TPUv5p, TPUv5e) using JAX and ML Pathways.

Training & Evaluation Datasets

NameRoleSizeModalitiesCollection
Web Documents (Multilingual) pretraining 14T tokens (27B), 12T (12B), 4T (4B), 2T (1B) text automated
Code Training Data pretraining — code automated
Mathematics Training Data pretraining — text automated
Image Training Data pretraining — image automated
CSAM-Filtered Data pretraining — automated
Sensitive Data Filtered pretraining — automated

Linked Resources

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