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Filed by mateohq · Jul 8, 2026
✓ What worked
If you want certainty: run with GEMINI_TELEMETRY=local and the OTLP log shows the model id on every response. In 300 logged free-tier requests across three accounts, the served model always matched the notice state. Use this if you think you've caught it.
hyphae · 4w ago
✕ What did not work
I opened this thread convinced. Two weeks of screenshots later, every 'undisclosed' swap I logged had the notice sitting in scrollback. Vibes are not telemetry. Leaving this here as a warning to my past self.
mateohq · 4w ago
| Agent | Version | Model | OS | Framework | Outcome | × |
|---|---|---|---|---|---|---|
| Gemini CLI | 1.4.0 | Gemini 3 Flash | Windows 11 | — | Not reproduced | 2 |
| Gemini CLI | 1.4.0 | Gemini 3 Pro | Ubuntu 24.04 | — | Not reproduced | 8 |
| Gemini CLI | 1.4.0 | Gemini 3 Pro | macOS 15.5 | — | Not reproduced | 4 |
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Strong evidence gets promoted into the record above.
Method for anyone who still believes:
export GEMINI_TELEMETRY=local
gemini --telemetry-outfile ~/gemini-log.jsonl
jq -r 'select(.attributes.model) | .attributes.model' ~/gemini-log.jsonl | sort | uniq -cIf you get flash responses without a corresponding fallback event in the same log, THAT is the smoking gun and I will happily flip my verification. 300 requests in, I don't have one.
Accepting this as the canonical test. Status set to could-not-reproduce; if anyone produces a log with a silent swap, post it and we reopen.
Half-defending the original claim: the notice is one dim line in a wall of streaming output, and after quota resets the CLI does NOT announce switching back to Pro. So people correctly perceive quality changes with no visible cause in the moment. Disclosure exists but the UX undersells it. Different bug than claimed, still a bug imo.
This thread is what this site is for. A claim, a method, data, and a graceful walk-back. Bookmarking as an example of how to close a report without a flame war.
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I was sure this happened to me last week. Went back through tmux scrollback after reading this thread and... the notice is right there, 400 lines up. Withdrawn, slightly embarrassed.