Short answer, then the detail.
For Heavy Google Workspace users; Multimodal and video generation work, Gemini is the more direct fit. For Tracking overseas reaction while it happens; English technical questions, Grok gets there with less fighting.
Both have free tiers, so cost only separates them once you hit the limits. Gemini takes more text in one go (1M tokens (Gemini 4 Argon unified context; Pro models take 1M input and 64K output) (checked 2026-10-29) vs 500K tokens (grok-4.7) (checked 2026-10-29)), which matters for whole books, long contracts and big codebases.
| Dimension | Gemini | Grok |
|---|---|---|
| Free tier | Yes | Yes |
| Pricing | Google AI Pro $19.99/mo ($199.99/yr); Google AI Ultra $99.99/mo; Google AI Plus $7.99/mo (third-party figure) (checked 2026-10-29) | X Subscription: Free $0; Plus $8/mo; Premium $30/mo; Super $100/mo; Ultra $200/mo (annual billing discounted) (checked 2026-10-29) |
| Context window | 1M tokens (Gemini 4 Argon unified context; Pro models take 1M input and 64K output) (checked 2026-10-29) | 500K tokens (grok-4.7) (checked 2026-10-29) |
| Platforms | Web, iOS, Android, macOS, Windows | Web, iOS, Android |
| Best for | Heavy Google Workspace users; Multimodal and video generation work; Very long source material | Tracking overseas reaction while it happens; English technical questions; X creators who post all day |
| Availability | Personal accounts are not open in mainland China, where only Workspace accounts work, and there is no China edition (checked 2026-10-29). | No mainland China edition; reaching it from there needs a proxy or VPN (checked 2026-10-29). |
Heavy Google Workspace users; Multimodal and video generation work; Very long source material. Its strongest point: Cites source links you can open and check yourself. Watch out for: Plan names get renamed often enough to be hard to track.
Tracking overseas reaction while it happens; English technical questions; X creators who post all day. Its strongest point: Reads live X posts and groups how a topic is argued. Watch out for: States guesses in the same tone as confirmed facts.
Running both is not wasteful here: one earns its keep on retrieval and tool use, the other on long text you intend to keep.
Gemini if you want Heavy Google Workspace users. Grok if Tracking overseas reaction while it happens. Neither has a learning curve worth worrying about past the first day.
Yes — both have free tiers, and the pair covers more ground than either alone.
Gemini takes more text in one go (1M tokens (Gemini 4 Argon unified context; Pro models take 1M input and 64K output) (checked 2026-10-29) vs 500K tokens (grok-4.7) (checked 2026-10-29)), which matters for whole books, long contracts and big codebases.