Google Starts Gemini 4 Pre-training; 3.5 Pro in Partner Testing

Google recently shared updates on its Gemini model series. The highly anticipated Gemini 3.5 Pro is currently in the partner testing phase and will see a broader rollout once ready. Separately, the company has officially initiated pre-training for its next-generation flagship model, Gemini 4, describing it as its most "ambitious" training run to date. These developments indicate Google is steadily advancing the iteration of its large model pipeline.

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Regarding the Gemini 4 pre-training, @kimmonismus speculated that this is not a fine-tuning of existing models, but rather pre-training a "completely new foundation model" from scratch. Based on this, they guessed that recent progress with Gemini 3.5 Pro might have been underwhelming, prompting Google to restructure its flagship model roadmap. Several commentators, including @andrew_n_carr and @himanshustwts, primarily expressed immense anticipation for this "ambitious" pre-training phase.

2026-07-21 ~ 2026-07-22 · 13 related posts

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