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Specifications
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
—2M
These models have no shared benchmark scores.
Overview
CompanyGoogleSpaceXSI
Release dateOct 28 2026Sep 19 2025
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Gemini 4 Carbon and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 Fast shipped 404 days before Gemini 4 Carbon, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — Gemini 4 Carbon and Grok 4 Fast don't publish scores on any of the same benchmarks.