Google Cloud

Nano Banana 2.1 appears to be a fictional or placeholder Google Gemini-based OCR engine slug that does not correspond to a known or publicly documented model. Based on the 'Nano' designation and Gemini branding, it may be intended to represent a lightweight, on-device variant of Google's Gemini vision capabilities with broad OCR support.

Gemini 4 Argon is Google's multimodal OCR engine leveraging the Gemini 4 model family to extract and interpret text across a wide range of document types, handwriting, and natural scene images. It stands out for its deep language understanding, layout-awareness, and broad multilingual support powered by Google's latest large-scale vision-language architecture.

Gemini 2.5 Flash-Lite — OCR-capable vision model.

Gemini 3.1 Flash Lite Preview — OCR-capable vision model.

Gemini 3 Flash Preview — OCR-capable vision model.

Gemini 3.1 Pro Preview — OCR-capable vision model.

Gemini 3.1 Pro Preview Custom Tools — OCR-capable vision model.

Gemini 2.5 Pro — Google's most capable model. Excellent document understanding.