What changed
Google released Gemini 2.5 Pro Experimental with native reasoning, a one-million-token context window, multimodal inputs, and a strong emphasis on coding and agentic tasks.
Why it matters
Reasoning was no longer a side branch: Google's next flagship family treated thinking as a default model behavior and combined it with long-context multimodality.
What to do
Test it on long, mixed-media tasks with exact retrieval checks and full workflow metrics; isolate the experimental endpoint behind a routing layer.
Caveat
The endpoint was experimental, pricing and behavior could change, and benchmark leadership was Google-reported.