xAI is Elon Musk’s AI lab building the Grok model family. Grok models are closed source and accessed through the X platform and an API.
Visit xAIModels tracked
14
Open weight
0
API only
14
Avg score
73.0
Top benchmark
93.2
Arena Score
Total HF downloads
—
Context window
131K – 2.0M
First release
Aug 2024
Latest release
Apr 2026
Ranked by composite score across benchmarks, popularity, efficiency, and versatility.
The strongest model from this provider in each modality. Click a card to open the model page.
How this provider’s catalog splits across text, image, video, audio, and embedding.
When each model shipped, newest first.
Apr 17
Feb 16
Nov 18
Nov 16
Nov 16
Sep 30
Sep 30
Jul 8
Mar 31
Mar 31
Feb 23
Aug 12
Composite grades across this provider’s catalog. Higher is better, blending benchmarks, popularity, and efficiency.
Closed-source models accessed through xAI’s API.
API pricing is per million tokens unless noted otherwise.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | text | SS86.1 | — | Nov 2025 | |
| 2 | Grok 4.1API | text | SS85.7 | — | Nov 2025 |
| 3 | text | AA78.7 | — | Feb 2026 | |
| 4 | text | AA74.7 | 500B | Apr 2026 | |
| 5 | text | AA73.0 | — | Nov 2025 | |
| 6 | text | AA72.7 | — | Sep 2025 | |
| 7 | text | AA71.8 | — | Sep 2025 | |
| 8 | text | AA70.3 | — | Jul 2025 | |
| 9 | Grok 2API | text | BB69.7 | — | Aug 2024 |
| 10 | text | BB69.3 | — | Feb 2025 | |
| 11 | text | BB67.9 | — | Mar 2026 | |
| 12 | text | BB67.5 | — | Mar 2026 | |
| 13 | text | BB67.4 | — | Mar 2025 | |
| 14 | text | BB67.0 | — | Mar 2025 |
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