Gemini 3.7 Flash vs Grok 4.6 — TPU stream vs open 1-paste
Flash is the stream people clock with a Google key. Grok is the chat that usually completes 1-paste. Same audit. Different honest path. Not an intelligence ranking.
Use this when the decision is a tight Gemini loop versus an instrumented Grok session. Clock Flash on own-key if you care about first-to-last tokens on that socket. Clock Grok on 1-paste if you care whether the chat will talk to the harness at all. Do not treat a faster stream as a smarter model.
Slowtest splits Generation tok/s (decode window when we have one) from full-turn tok/s (start of the job to the last token or finish beacon). Fidelity is Line 1 MODEL: plus 800–1200 words. This table is path context, not a ledger. Live numbers belong on a receipt or the Insights TPS ledger once someone pastes a real run. Method: How we measure.
Own-key hits Gemini and xAI from your browser. 1-paste needs a model that will POST start and finish. Grok is typically Open. Flash 1-paste is Unrated — it depends whether that Gemini UI will POST; if it will not, stream it. An Open harness is not IQ. See Harness Restriction.
| What you can actually clock | Gemini 3.7 Flash | Grok 4.6 |
|---|---|---|
| Own-key Generation | In-browser Gemini stream — clean first-to-last | xAI stream if you have a key |
| 1-paste / Harness | Unrated — depends if that Gemini UI will POST | Open — typically completes start/finish |
| Full-turn | Whole Gemini job: prefill, tools, queue, POST | Whole Grok job: think, tools, queue, POST |
| Fidelity | Same audit: Line 1 MODEL:, 800–1200 words |
Same audit: Line 1 MODEL:, 800–1200 words |
| Honest pair | Label the mode. A Flash own-key stream and a Grok 1-paste beacon are both real windows — still different products. | |
Three questions for this pair
Is a Flash stream the same clock as a Grok 1-paste?
Both can be real Generation windows, but they are different products. Flash own-key is first-to-last token on a Gemini socket. Grok 1-paste is server start/finish beacons. Compare Generation to Generation only if you label the mode. Full-turn still includes think, tools, and queue on each side.
When is own-key the only honest Generation number for Flash?
When that Gemini surface will not POST start and finish. Insights leaves Flash 1-paste Unrated on purpose. Own-key from the home page is the clean first-to-last clock. If the UI refuses the hook, do not invent a Flash 1-paste tok/s.
Does an Open harness mean Grok is the better model?
No. Open means Grok typically completes the Slowtest handshake. That is Harness Restriction — willingness to run wired-up — not quality and not a faster decode. Fidelity is still Line 1 plus 800–1200 words. A fast Flash miss is not a win. How we measure.
Stream Flash. Paste Grok. Same audit.
Label the mode. Keep Generation and full-turn on separate lines. Empty ledger cells stay empty.
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