Gemini CLI — October 2026 Releases

4 releases in October 2026.

What's new in Gemini CLI, October 2026

Gemini CLI ships stability, session resume and terminal rendering fixes, plus OTLP headers

Gemini CLI's October 2026 releases so far are mostly reliability work, with a few additions: custom OTLP headers for telemetry in v0.65.0 and MCP OAuth that can reach private endpoints in v0.66.0. Four releases have shipped this month, from v0.63.0 to v0.66.0, and the month is still in progress.

The fixes cluster around long sessions and state. v0.63.0 bounds tool output size to limit memory growth in long-running agent loops and shows a retry progress indicator during connection recovery. v0.64.0 prevents a CPU hang when @ appears within code, makes file tool writes atomic, and persists state atomically with recovery from a backup on corruption. v0.65.0 fixes duplicate tool response turns and deleted history when resuming sessions, and enforces read-only workspace settings in untrusted folders. v0.66.0 adds synchronized output and isolates spinner rendering to reduce flicker, and disables interactive credential and SSH prompts in the git environment.

  • Custom OTLP headers are now supported for telemetry (v0.65.0)
  • MCP OAuth can now reach private endpoints (v0.66.0)
  • Session resume fixes: no duplicate tool response turns, no deleted history on quick exit (v0.65.0)
  • Workspace settings are read-only in untrusted folders (v0.65.0)
  • Atomic file tool writes and state persistence with backup recovery on corruption (v0.64.0)
  • Synchronized output and isolated spinner rendering for smoother terminal display (v0.66.0)

Upgrading from v0.62.0? See every change through v0.66.0.

Gemini CLI full changelog