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Google rolling out upgraded Gemini 2.5 Pro preview 

Google today released an “upgraded preview” of Gemini 2.5 Pro that will soon be generally available in the coming weeks.

This model update builds off 2.5 Pro’s I/O Edition (05-06) last month that brought coding upgrades. That coding lead continues with 06-05 today across benchmarks like AIDER Polyglot, while there’s “top-tier performance on GPQA and Humanity’s Last Exam (HLE), highly challenging benchmarks that evaluate a model’s math, science, knowledge and reasoning capabilities.”

Meanwhile, Google notes how 06-05 today has a “24-point Elo score jump on LMArena” at 1470 today, while there’s a “35-point Elo jump to lead on WebDevArena at 1443.”

With the last few model upgrades, some people noticed performance declines outside of coding, especially compared to 03-25. Google is now addressing that feedback with improved “style and structure,” so that Gemini 2.5 Pro “can be more creative with better-formatted responses.”

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This Gemini 2.5 Pro model update is still in preview, but you can expect general availability and a stable version “in a couple of weeks.” It is rolling out now to the Gemini API via Google AI Studio and Vertex AI, with developers able to control cost and latency with thinking budgets (as introduced with 2.5 Flash). The Gemini app is also getting this 2.5 Pro preview upgrade today.

L-R: 06-05, 05-06, 03-25

  • Gemini 2.5 Pro preview
  • Gemini 2.5 Pro coding
  • Gemini 2.5 Pro experimental

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Avatar for Abner Li Abner Li

Editor-in-chief. Interested in the minutiae of Google and Alphabet. Tips/talk: [email protected]