Gemini 2.5 Pro at a glance
Gemini 2.5 Pro Experimental reasons before answering, shipped with a 1M-token context window and led several math, science and coding benchmarks at launch.
What changed with Gemini 2.5 Pro
On March 25, 2025, Google introduced Gemini 2.5, calling it its most intelligent model, starting with an experimental version of 2.5 Pro. It is a thinking model that reasons before responding, and Google said it debuted at the top of the LMArena human-preference leaderboard by a significant margin.
Google reported leading scores on GPQA and AIME 2025 without test-time tricks such as majority voting, 18.8% on Humanity's Last Exam without tools, and 63.8% on SWE-Bench Verified with a custom agent setup. It shipped with a 1 million token context window, with 2 million promised, in Google AI Studio and the Gemini app for Advanced users, with Vertex AI and paid pricing to follow.
Gemini 2.5 Pro in numbers
Values are copied from the linked source on the date shown. They are not IA Compa measurements.
- Context windowas of · Source for Context window: blog.google (opens in a new tab)
- 1M tokens
How it compares
Other models in the same category that we have covered, using each model's latest recorded value. (Models)
Where to compare Gemini 2.5 Pro
Independent leaderboards and official resources for comparing this model yourself. Rankings change often; each site shows its own current data.
General leaderboards
Official resources
Why Gemini 2.5 Pro matters for businesses
For businesses, 2.5 Pro combined strong reasoning with very long context, making it practical to analyze whole contracts, codebases or long recordings in one request, and it reset expectations for what Google's models could do.
Sources for this story
- Gemini 2.5: Our newest Gemini model with thinking (opens in a new tab)Official
Google · blog.google
- Gemini 2.5 Pro model page (opens in a new tab)Benchmark
Artificial Analysis · artificialanalysis.ai
Last verified: . IA Compa summarizes public announcements for business readers. We are not affiliated with the companies mentioned. Always confirm details, pricing, and availability with the official source.
- #llm
- #gemini
- #reasoning
- #long-context
