Gemini CLI shuts down June 18, 2026; multi-agent workloads move to Antigravity CLI (Go-based, async agent orchestration) with unified backend shared across desktop and terminal.
Summary
Terminal-first developers lose weekly release cadence and must migrate Agent Skills, Hooks, Subagents to new platform. The unified harness means desktop and CLI agents sync automatically—critical if you're splitting work across multiple agents—but feature parity gaps exist at launch.
Why it matters
Terminal-first developers lose weekly release cadence and must migrate Agent Skills, Hooks, Subagents to new platform. The unified harness means desktop and CLI agents sync automatically—critical if you're splitting work across multiple agents—but feature parity gaps exist at launch.
Implementation verdict
Antigravity CLI replaces Gemini CLI entirely; requires migration of Skills and plugins before June 18 deadline. Go implementation promises faster execution and async workflows (no terminal lock on large refactors), but deprecation timeline is tight and early feature gaps are acknowledged. Worth piloting now if you're already on multi-agent patterns; risky if you depend on Gemini CLI's full feature set.
Sources
Dev Signal
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