Gemma is a family of lightweight, state-of-the-art open models from Google, built from the same research and technology used to create the Gemini models. Gemma 3 models are multimodal, handling text and image input and generating text output, with open weights for both pre-trained variants and instruction-tuned variants. Gemma 3 has a large, 128K context window, multilingual support in over 140 languages, and is available in more sizes than previous versions.

Gemma 3 models are well-suited for a variety of text generation and image understanding tasks, including question answering, summarization, and reasoning. Their relatively small size makes it possible to deploy them in environments with limited resources such as laptops, desktops or your own cloud infrastructure, democratizing access to state of the art AI models and helping foster innovation for everyone.

Technical report: https://storage.googleapis.com/deepmind-media/gemma/Gemma3Report.pdf

Inputs and outputs

Input:

• Text string, such as a question, a prompt, or a document to be summarized

• Images, normalized to 896 x 896 resolution and encoded to 256 tokens each

• Total input context of 128K tokens for the 4B, 12B, and 27B sizes, and 32K tokens for the 1B size

Output:

• Generated text in response to the input, such as an answer to a question, analysis of image content, or a summary of a document

• Total output context of 8192 tokens

Benchmark Results

These models were evaluated against a large collection of different datasets and metrics to cover different aspects of text generation:

Reasoning and factuality

Benchmark	Metric	Gemma 3 PT 1B	Gemma 3 PT 4B	Gemma 3 PT 12B	Gemma 3 PT 27B
HellaSwag	10-shot	62.3	77.2	84.2	85.6
BoolQ	0-shot	63.2	72.3	78.8	82.4
PIQA	0-shot	73.8	79.6	81.8	83.3
SocialIQA	0-shot	48.9	51.9	53.4	54.9
TriviaQA	5-shot	39.8	65.8	78.2	85.5
Natural Questions	5-shot	9.48	20.0	31.4	36.1
ARC-c	25-shot	38.4	56.2	68.9	70.6
ARC-e	0-shot	73.0	82.4	88.3	89.0
WinoGrande	5-shot	58.2	64.7	74.3	78.8
BIG-Bench Hard	few-shot	28.4	50.9	72.6	77.7
DROP	1-shot	42.4	60.1	72.2	77.2

STEM and code

Benchmark	Metric	Gemma 3 PT 4B	Gemma 3 PT 12B	Gemma 3 PT 27B
MMLU	5-shot	59.6	74.5	78.6
MMLU (Pro COT)	5-shot	29.2	45.3	52.2
AGIEval	3-5-shot	42.1	57.4	66.2
MATH	4-shot	24.2	43.3	50.0
GSM8K	8-shot	38.4	71.0	82.6
GPQA	5-shot	15.0	25.4	24.3
MBPP	3-shot	46.0	60.4	65.6
HumanEval	0-shot	36.0	45.7	48.8

Multilingual

Benchmark	Gemma 3 PT 1B	Gemma 3 PT 4B	Gemma 3 PT 12B	Gemma 3 PT 27B
MGSM	2.04	34.7	64.3	74.3
Global-MMLU-Lite	24.9	57.0	69.4	75.7
WMT24++ (ChrF)	36.7	48.4	53.9	55.7
FloRes	29.5	39.2	46.0	48.8
XQuAD (all)	43.9	68.0	74.5	76.8
ECLeKTic	4.69	11.0	17.2	24.4
IndicGenBench	41.4	57.2	61.7	63.4

Multimodal

Benchmark	Gemma 3 PT 4B	Gemma 3 PT 12B	Gemma 3 PT 27B
COCOcap	102	111	116
DocVQA (val)	72.8	82.3	85.6
InfoVQA (val)	44.1	54.8	59.4
MMMU (pt)	39.2	50.3	56.1
TextVQA (val)	58.9	66.5	68.6
RealWorldQA	45.5	52.2	53.9
ReMI	27.3	38.5	44.8
AI2D	63.2	75.2	79.0
ChartQA	63.6	74.7	76.3
VQAv2	63.9	71.2	72.9
BLINK	38.0	35.9	39.6
OKVQA	51.0	58.7	60.2
TallyQA	42.5	51.8	54.3
SpatialSense VQA	50.9	60.0	59.4
CountBenchQA	26.1	17.8	68.0

License

Gemma3 is provided under the custom Gemma license.