Google says that the move to Gemini 2.5 has boosted the accuracy and usefulness of Deep Research. The graphic above shows Google's alleged advantage compared to OpenAI's deep research tool. These stats are based on user evaluations (not synthetic benchmarks) and show a greater than 2-to-1 preference for Gemini 2.5 Pro reports.

While developers of AI models have generally refrained from opening up access beyond their data centers, Google’s announcement suggests that may be changing.