Gemini CLI will stop working from June 18, 2026

Transition from Gemini CLI to Antigravity CLI

  • Gemini CLI support ends June 18, 2026; Antigravity CLI is positioned as its successor and is already available.
  • Some see this as mostly a rename/unification of harnesses; others emphasize Antigravity is a different, heavier product with missing features.
  • Enterprise users on certain Gemini Code Assist / Workspace licenses reportedly keep CLI access, but non‑enterprise plans lose Gemini Code Assist.

Features, Protocols, and Architecture

  • Antigravity CLI is described as a large Go binary with its own browser control stack, sandboxing, Git, language detection, skills system, subagents, artifacts review, and telemetry.
  • It appears to mirror many concepts from Claude Code (agents, skills, plugins, MCP), but current ACP support is missing, which worries people relying on it.
  • Some developers prefer minimal/agnostic harnesses (e.g., MCP-based tools, Pi, Codex) over such complex, opaque agents.

Open Source vs Closed and Vendor Lock‑In

  • Gemini CLI was Apache‑licensed open source; Antigravity CLI is closed, with only a minimal public repo.
  • A “chance” of open‑sourcing Antigravity is mentioned but viewed skeptically.
  • Several commenters see this as part of a broader shift away from open agents toward proprietary harnesses and tighter control over usage.

Quotas, Pricing, and Access

  • Antigravity CLI appears to use weekly rather than daily limits; some users report hitting quotas that then take a week to reset.
  • Many complain about opaque pricing, rapidly reduced quotas, and fragmented limits across Gemini CLI, Antigravity, and AI Studio now being consolidated.
  • Access is restricted by geography and age; some users can’t subscribe at all, despite wanting to pay. Others use Gemini via OpenRouter to avoid Google billing.

Reliability, UX, and Product Quality

  • Opinions on Gemini CLI are sharply split: some found it very useful; more describe it as slow, buggy, or “hot garbage.”
  • Early Antigravity CLI/IDE experiences are often negative: UI glitches, sandbox networking issues, lost settings/extensions after updates, confusing documentation, and quota-related failures.
  • A minority regard Antigravity as clearly superior and welcome centralizing on a single harness.

Impact on Developers and Trust in Google

  • The one‑month migration window is seen as disruptive, especially for workflows depending on ACP or Gemini CLI behavior.
  • Many cite this as another example of Google’s “graveyard” culture and say they now avoid building on Google AI tools or Google developer products generally.
  • Some argue internal politics, reorgs, and prioritizing Google’s own needs over external developers drive these decisions.

Branding, Strategy, and Ecosystem Confusion

  • Commenters criticize the proliferation and renaming of Google AI products (Gemini, Antigravity, Vertex, various “Pro/Ultra/Enterprise” plans), calling it incoherent and hostile to users.
  • There is debate over branding: some think separating “Gemini” (models) from “Antigravity” (platform/harness) makes sense; others think abandoning the better-known Gemini name for a confusing new brand is counterproductive.
  • Several say this volatility is why they stick with non‑Google providers (OpenAI, Anthropic, others) or open, vendor‑agnostic harnesses.