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On October 23, 2026, Google CEO Sundar Pichai responded to the question of why Gemini 3.5 Pro was ultimately not released. According to a report by Alex Heath, Pichai said that while training the 3.5 series, the team found gaps in agentic capabilities, especially in coding, and believed that iterating with the smaller and more efficient Flash would be faster, so they released 3.5, 3.6, 3.7, and 3.8 Flash in succession; by the time this set of capabilities could be applied to Pro, Argon pretraining had already been completed. This explanation currently comes from that report, and there are no other developments at this time.
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Pichai responds to why Gemini 3.5 Pro was not releasedDevelopments
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- Source:Alex Heath
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Oct 23
Alex Heath
Pichai responds to why Gemini 3.5 Pro was not released
Alex Heath asked Google CEO Pichai why Gemini 3.5 Pro ultimately was not released. Pichai said that while training the 3.5 series, the team found gaps in agentic capabilities, especially in coding, and believed that iterating with the smaller, more efficient Flash would be faster, so they released 3.5, 3.6, 3.7, and 3.8 Flash in succession; by the time this set of capabilities could be applied to Pro, Argon pretraining had already been completed.