Grok vs Gemini: the fast one vs the big one

Grok sells speed, personality, and the X firehose; Gemini sells capacity and value, with a million-token window on paid plans and the deepest consumer bundle in tech. They rarely compete for the same job: real-time social intelligence points at Grok, long documents and Workspace integration point at Gemini. What they share is the ceiling: one vendor's models in a strictly linear chat, with usage limits neither publishes as numbers. We build NodePad; the third column is for treating both families as options instead of allegiances, with Gemini available per message next to Claude and GPT, on a canvas where the context is yours to assemble.

dimension Grok Gemini NodePad
Price of entry Free (volatile caps); SuperGrok Lite $10/mo; SuperGrok $30/mo; Heavy $300/mo; also bundled with X Premium. Free; AI Plus $4.99/mo; AI Pro ~$20/mo; AI Ultra $100 to $200/mo; the lowest serious floor. Free on community models; paid plans from $5/mo.
Models xAI models only, exposed as modes (Auto, Fast, Expert; Heavy on the top tier). Google models only, behind Fast, Thinking, and Pro labels that swap versions underneath. Claude, GPT, and Gemini with exact model names, picked per message.
Newest model access Staged: Grok 4.5 reached the $300 Heavy tier first; cheaper tiers queue. New Gemini versions replace old ones under the same labels, on Google's schedule. New models appear for every paid plan at once.
Context window 500K on grok-4.5, 1M on grok-4.3 per the API docs; the app publishes nothing. 32K free, 128K Plus, 1M on Pro and Ultra; the biggest paid window of the big apps. The model's full window, spent on context you chose rather than a resent scrollback.
Who assembles the context Memory lives outside the window and is injected invisibly; in-chat "forget that" does not actually delete it. Personalization from chat history and, opted in, Gmail and Drive. You. The path you built plus what you referenced or merged. Nothing hidden, nothing injected.
Branching and organization Linear chats inside Workspaces; no branching documented. Strictly linear; no working folders shipped as of mid-2026. Fork any point onto a visible parallel path; merge chats on one canvas.
Live data and media The X firehose, DeepSearch, voice personas, image and video generation from $10. Deep Research free, Gemini Live voice, image and video generation, the Workspace and storage bundle. No built-in search, voice, or media generation; plugins can add tools. Both columns beat us here.
Usage limits Rolling windows that shift with demand; numbers rarely published. Published as multipliers only (2x, 4x, 5x, 20x). A visible usage meter; add usage or wait for the monthly reset.
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No credit card to start. Every paid plan reaches every model.