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Kimi Vivace vs SuperGrok Heavy
Kimi Vivace is for committed Kimi users at full-time volume; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost. SuperGrok Heavy costs $300/mo, 1.5x Kimi Vivace's $199/mo.
Our verdict
The Moonshot AI ladder. Every Kimi tier runs the same open-weight K3 on the same credit mechanics, and the rungs are credit multiples of the $19 tier (roughly 2x, 5x and 10x its allowance). Pick a rung by how much you will use; the model is identical everywhere.
The xAI ladder. It splits at $30. Lite, below that, is chat only; from SuperGrok up every rung runs the same Grok CLI and model. xAI publishes no usage multiples, so we cannot say what a bigger rung buys beyond "more". The one feature only this ladder sells is live X search, and only SuperGrok Plus has it.
Kimi Vivace is for committed Kimi users at full-time volume; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost.
SuperGrok Heavy costs $300/mo, 1.5x Kimi Vivace's $199/mo.
We have not measured Kimi Vivace on its own plan; its card below points at the closest graded evidence.
We have not measured SuperGrok Heavy on its own plan; its card below points at the closest graded evidence.
At $199 this sits next to the strongest plans on the page. Full-time volume on an open-weight model is a coherent thing to want; wanting it from a model moving the wrong way in our own use is the hard part.
Pros
- Ten times the entry allowance
- Full-time open-weight volume
Cons
- Priced against far stronger rivals
- K3 has got worse while the price has not
Best for Committed Kimi users at full-time volume.
How far it goes: we have not measured this plan
No graded Kimi subject at the moment; see the leaderboard for graded alternatives.
The leaderboard lists every plan we do grade.
The most expensive plan we track, and the least knowable: xAI publishes no usage multiple, so we cannot say what $300 buys beyond "more". The model is the same 4.6 that runs at $30, currently the slowest agent we run.
Pros
- The highest xAI limits sold
- The full Grok product, X features included
Cons
- Ten times the price of the $30 tier, same model
- No published multiple: the extra allowance is unquantified
Best for Grok users who want the highest limits, whatever they cost.
How far it goes: we have not measured this plan
Same Grok CLI as SuperGrok with a far bigger allowance - the SuperGrok scorecard is the closest evidence.
The leaderboard lists every plan we do grade.
Verdicts and prices are the quiz's versioned editorial catalog, last reviewed 2026-08-20; usage figures come from our own published runs and stay a share of each plan's own allowance. Any other pair composes on the subscription comparison, and the quiz turns your answers into a recommendation.
Frequently asked questions
Which should I pick, Kimi Vivace or SuperGrok Heavy?
Kimi Vivace is for committed Kimi users at full-time volume; SuperGrok Heavy is for Grok users who want the highest limits, whatever they cost.
How much do Kimi Vivace and SuperGrok Heavy cost?
Kimi Vivace costs $199/month (public price as of 2026-08-12); SuperGrok Heavy costs $300/month (public price as of 2026-08-12).