Released Jul 19, 2026. Everything the community has pinned to this exact release.
Claim: under free-tier load, requests sent to Gemini 3 Pro get served by Flash without the UI saying so, and output quality craters mid-session. Several of us have tried to catch it in the act and can't. Filing as could-not-reproduce with the evidence laid out.
Reproduction evidence on 1.4.0
| Problem | Version | OS | Outcome | Status |
|---|---|---|---|---|
| Gemini CLI silently downgrades to Flash on the free tier | 1.4.0 | Windows 11 | Not reproduced | Could Not Reproduce |
| MCP server memory leak in long sessions | 1.4.0 | Ubuntu 24.04 | Reproduced | Active Issue |
| Gemini CLI silently downgrades to Flash on the free tier | 1.4.0 | Ubuntu 24.04 | Not reproduced | Could Not Reproduce |
| Gemini CLI silently downgrades to Flash on the free tier | 1.4.0 | macOS 15.5 | Not reproduced |
| Could Not Reproduce |