Google Antigravity 2.0 wires Gemini 3.5 Flash as default backend — first major-lab IDE-plus-model bundled SKU

Google's Antigravity 2.0 IDE now ships with Gemini 3.5 Flash as the default backend, bundling model and IDE under a single Google AI subscription. The pairing makes Google the first major-lab vendor to integrate model and IDE as one procurement decision rather than two. With Flash hitting 76.2% Terminal-Bench, the bundling is no longer a capability compromise.

The procurement story is the point. Cursor and Windsurf are model-agnostic IDEs; Claude Code is a model-specific terminal CLI. Antigravity 2.0 is the first time a major-lab model gets sold inside its own IDE with the model-tier pricing already absorbed into the IDE subscription. Enterprise buyers running Google Workspace can layer Antigravity onto existing identity, billing, and compliance infrastructure — a meaningful onboarding-friction reduction.

The competitive question for Microsoft (with GitHub Copilot's partial MCP support), Anthropic (with Claude Code's model-specific posture), and OpenAI (currently shipping Codex through ChatGPT) is whether they ship comparable bundled-stack offerings. Q3 2026 should reveal which labs match the bundling pattern and which double down on the standalone-model + third-party-IDE pattern.

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