Google's Gemini and xAI's Grok, compared through their current models on the Respan Index. The strongest Gemini model today is Gemini 4 Argon (#3 on the Respan Index, 70.3); the strongest Grok model is Grok 4.6 (#19, 51.0). Gemini's best models lead in coding, agents, reasoning, knowledge and human preference.
| Category | Gemini | Grok |
|---|---|---|
| coding | Gemini 4 Argon 64.4 | Grok 4.7 43.2 |
| agents | Gemini 4 Argon 75.9 | Grok 4.7 65.6 |
| reasoning | Gemini 4 Argon 78.0 | Grok 4.6 51.7 |
| knowledge | Gemini 3.1 Pro Preview 72.9 | Grok 4.7 55.7 |
| human preference | Gemini 4 Argon 57.4 | Grok 4.7 56.0 |
Each family's highest Respan Index category score; the higher one is bold. * Estimated: no published scores in that category.
Respan Index rank and score, blended list price per 1M tokens.
The cheapest ranked Gemini model is Gemini 3.1 Flash-Lite at $0.563 per 1M tokens blended; the cheapest Grok model is Grok 4.1 Fast Reasoning at $0.275.