Google I/O 2026, scheduled for mid-May, is shaping up to be the most consequential developer conference in the company's history. Industry sources and leaked documentation point to three landmark announcements: the full release of Gemini 2.5 Ultra, an optional AI-only search mode that replaces traditional results entirely, and the general availability of Project Astra -- Google's real-time multimodal AI assistant.

Gemini 2.5 Ultra: The Benchmark Contender

Gemini 2.5 Ultra, currently available only to select enterprise partners, reportedly achieves state-of-the-art scores on the MMLU Pro and HumanEval benchmarks, directly challenging Claude Opus 4.7 and GPT-5.5. The model introduces native video understanding at 2-hour context lengths and a 2M-token context window for document workflows. Enterprise pricing is expected at $15 per million input tokens.

AI-Only Search Mode: The Riskiest Bet in Search History

The highest-stakes announcement may be Google's optional AI Mode for Search -- a setting that replaces the traditional ten-blue-links results page with a single AI-generated answer interface. The mode, currently in limited testing under the codename "Meridian," would be opt-in initially but signals Google's long-term direction: a search engine that answers rather than retrieves. Publishers and SEO-dependent businesses are watching with alarm.

Project Astra Goes General Availability

Project Astra, Google's always-on multimodal assistant that can see, hear, and respond in real time via smartphone camera, is expected to launch in general availability on all Pixel 10 and compatible Android 16 devices. The launch would mark the first mainstream deployment of a persistent ambient AI assistant at consumer scale -- a direct response to Apple Intelligence and Meta AI on Ray-Ban glasses.