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Google Delays Gemini 3.5 Pro After Model Misses Coding Targets

The pause signals technical and organizational gaps that have allowed rivals to pull ahead, denting investor confidence.

Overview

  • Bloomberg reported Thursday that Google has pushed back the public launch of Gemini 3.5 Pro by months after the model failed to meet internal performance goals, especially on coding tasks.
  • Google retrained Gemini with updated data in late June to improve its coding ability but engineers found the results disappointing, prompting more development and testing rather than a public rollout.
  • A company spokesperson said Google is testing 3.5 Pro, an upgraded Flash model, and other systems with partners and is engaging with U.S. authorities on model testing and safety standards.
  • News of the delay drove Alphabet shares lower by roughly 3–4 percent as customers and investors weigh whether rivals such as OpenAI and Anthropic now lead on code generation and agentic coding features.
  • The setback highlights internal friction at Google—overlapping teams, competing compute demand, and cross‑product integration—which could slow product integrations across Search, Android, Workspace, and partner services while the company refines Gemini.