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At Google I/O 2026, Google rebuilt Antigravity (AI coding tool) into a full Agent development suite, Antigravity 2.0, powered by Gemini 3.5 Flash, and added full workflow Agentic capabilities, directly competing with Claude Code and OpenAI Codex.
Nimbus is an agentic browser that leverages Claude Code UX for enhanced coding and browsing experiences.
Google DeepMind's 'Antigravity' division demoed an agent-first IDE that allows AI agents to plan, code, browse, validate themselves, and self-educate, all under 30 minutes.
Cline, an agentic coding harness, is reported to outperform Claude Code with Opus 4.6 and 4.7 according to its benchmarks.
ShioriCode is an open-source alternative to Codex and Claude Code, providing code assistance tools.