What Gemini 2.5 introduced in March 2025

01What was available at launch

Google offered the experimental Pro model through Google AI Studio and to Gemini Advanced users in the Gemini app. The announcement covered reasoning, coding and multimodal capabilities, alongside results on selected benchmarks ^[1].

Experimental is part of the historical model name. It should not be dropped when comparing the original announcement with a later stable release: a family name can cover several versions with different behavior and availability.

02Test your own task

Our social caption asked how much this release would change AI tools. A benchmark chart cannot answer that for every project. Pick a task with an answer you can check, record the exact model version and compare its output with your existing workflow.

For code, include the failing case and run the project's tests. For document analysis, verify the answer against the supplied document. Track how much correction the result needs, not just whether it sounds convincing.

This article records the initial release. The linked announcement supplies the historical context rather than a promise about today's plans or access limits.