Gemini CLI Version Tracker: Environment Variables, Models & Features#

Published on July 14, 2026

We analyze Google's Gemini CLI releases to document the environment variables, model IDs, and feature surface of each build. Because Gemini CLI is fully open source, every finding is grounded in the published source at the release tag and the tag-to-tag diff — commits, contributors, and the subsystems that moved — plus the official release notes.

Tracking the other agents too? See the Claude Code Version Tracker, Codex CLI Version Tracker, OpenCode Version Tracker, and Amp Version Tracker.

Version History#

v0.53.1 — August 4, 2026#

sandbox + RCE hardening · JSON-safe edits · coreTools→tools.core · 66 commits · 14 authors

The v0.47.0 to v0.53.1 range is a consolidation window: no new env vars, model IDs, or feature flags, with the gemini-3.1 and 3.5 families already present at the baseline. Google spent six stable releases on the security boundary instead, moving macOS Seatbelt profiles to deny-default, making ~/.gitconfig read-only in the sandbox, fixing path-traversal on skill install and a symlink escape in the memory importer, and preventing RCE in the agent-to-agent server. Edit reliability improved (write_file and replace now skip LLM correction for JSON and IPYNB), coreTools migrated to tools.core, and a new caretaker-agent Cloud Run triage service appeared in tools/ outside the shipped CLI. 66 commits, 14 authors, weekly stable cadence held.

v0.47.0 — July 14, 2026#

288 env vars · 39 model IDs · baseline snapshot

The first tracked Gemini CLI build. 288 environment-variable literals (about 160 of them telemetry attribute keys), 39 model-ID strings from the 1.5 to 3.5 families, 25 experimental flags, a built-in model router, and four auth backends. The surface every later post diffs against.