Grok vs Kimi
In short: Kimi comes out higher on quality (Elo and editorial score combined), Kimi is stronger on privacy and GDPR, and Grok is cheaper to get started with.
A bar fills towards the model's side; yellow is a clear difference, grey falls within the margin of measurement.
| Criterion | Grok | Kimi |
|---|---|---|
| Quality (Elo)Quality from blind duels on LMArena: users choose between two anonymous answers. A difference of about 20 points is noticeable, a few points is noise. How we measure | 1471 | 1487 |
| Editorial scoreOur own assessment on 10 of suitability for professional work, price and privacy. This is a judgement, not a measurement; that is why it always sits alongside the Elo. How we measure | 7,8 / 10 | 7,6 / 10 |
| Code EloThe same blind duels on LMArena, but only with programming tasks. How we measure | 1640 | 1687 |
| API price in, per 1M | $2 | $2 |
| API price out, per 1M | $6 | $10 |
| Entry price (subscription) | $10 / month | $19 / month |
| Business | on request | on request |
| Context window | 500K tokens (Grok 4.7) | 1M tokens |
| Modalities | Text, Image, Code | Text, Image, Video |
| EU hosting | No | No |
| Self-hostable | No | Yes |
| No training (business) | No | No |
| GDPR profileOur summary of what the provider itself publishes about your data. For a professional tool: whether the data is stored in the EU, whether there is a certification or GDPR guarantee, and whether the provider is based in the Netherlands or the EU. For a general model: EU hosting, no training on your data and self-hosting. From Strong to Unknown; Caution only for a model with a documented problem. How we measure | Caution | Caution |
Source: LMArena, OpenRouter · retrieved 9 November 2026
Choose Grok if…
- real-time X/Twitter and web data matters to you
- a DeepSearch research agent matters to you
- price is a decisive factor
Choose Kimi if…
- self-hosting your flagship K3 (2.8T parameters, 1M context) and open-weight K2.6 matters to you
- being multimodal, with text, image and video in one architecture, matters to you
- you want the highest overall quality
- privacy and GDPR weigh heavily
Frequently asked questions
By field
Which is better: Grok or Kimi?
On combined quality (LMArena Elo + our editorial score), Kimi comes out higher, but the right choice depends on your field and requirements: Grok may suit you better on price or privacy. See the table above.
Which is better for privacy and GDPR: Grok or Kimi?
Kimi scores higher here (EU hosting, on-premise and no training on your data). Grok: no EU data residency; data goes to the US under the EU-US Data Privacy Framework. X/Grok uses public posts and conversations for training by default, with opt-out. Subject of GDPR investigation by the Irish DPC.
Which is cheaper: Grok or Kimi?
Grok has the lowest entry price. Always check current prices, as they change often.
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