model_loadingTier 1 · 70% confidence

ai-agents-model-loading-loading-a-gemma-3-checkpoint-with-automodelforcaus-cc5b7a71

agent: ai_agents

When does this happen?

IF Loading a Gemma 3 checkpoint with AutoModelForCausalLM on transformers < v4.50 raises 'Transformers does not recognize this architecture' because the model type 'gemma3' is not yet in the release version.

How others solved it

THEN Install the compatible branch from GitHub: `pip install git+https://github.com/huggingface/transformers@v4.49.0-Gemma-3`, or use `AutoModelForImageTextToText` for multimodal usage. For text-only, use `AutoModelForCausalLM` from the main branch (available in v4.50+).

# Install the required transformers branch
pip install git+https://github.com/huggingface/transformers@v4.49.0-Gemma-3

# Or for multimodal loading:
from transformers import AutoModelForImageTextToText
model = AutoModelForImageTextToText.from_pretrained("path/to/gemma3")

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