Google I/O 2026: Gemini 3.5 Flash, Gemini Omni video, and Antigravity 2.0 ship a full AI-first stack

Demis Hassabis used the I/O stage to position Gemini Omni as a single multimodal model that translates between text, audio, images and video, with an initial focus on video creation — users can prompt outputs like a 'claymation explainer of protein folding' from mixed media inputs. Alongside Omni, Google shipped Gemini 3.5 Flash as the new default, with Gemini 3.5 Pro scheduled for next month. AI Studio lead Logan Kilpatrick framed 3.5 as 'the start of a new era,' the payoff of 2.5 years of infrastructure work.

The more strategically loaded announcement was Antigravity 2.0: a five-surface platform anchored by a single-agent harness, plus agentic features like Gemini Spark and Universal Cart. A widely circulated r/singularity post (1,947 upvotes) showed Antigravity stitching together 96 agents to build a working operating system from scratch in 12 hours for under $1K in token costs — and running Doom on it. Sundar Pichai tweeted that Antigravity weekly quotas had been tripled again to keep up.

Pricing is the other shock. Coverage on Medium dissects Gemini 3.5 Flash's claim of sub-half pricing versus competitors, walking through token math, batch mode, and free-tier limits. Combined with Omni's video-gen push, Google is now competing on price AND modality breadth simultaneously — putting pressure on OpenAI's IPO-era margin story and on Anthropic's Claude pricing.

Not everyone is sold. Simon Willison declined to write about I/O because he prefers shipped products to announcements. HN flagged Antigravity as a possible 'bait and switch' (553 points), and a separate Gemini-Omni-as-AGI piece argues the model is impressive but not the milestone some are claiming. Confusion is already biting users: Google Flow credits don't automatically unlock Gemini Omni Flash, creating tier friction for early adopters expecting parity.