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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
17
Open weight
0
API only
17
Avg score
67.0
Top benchmark
99.2
MATH-500
Total HF downloads
—
Context window
131K – 2.0M
First release
Aug 2024
Latest release
Jul 2026
Ranked by composite score across benchmarks, popularity, efficiency, and versatility.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | Grok 4.1 (Thinking)API | text | SS87.7 | — | Nov 2025 |
| 2 | Grok 4.1API |
The strongest model from this provider in each modality. Click a card to open the model page.
Text
Grok 4.1 (Thinking)
Video
Grok Imagine Video 1.5
How this provider’s catalog splits across text, image, video, audio, embedding, and decision models.
When each model shipped, newest first.
Jul 8
Closed-source models accessed through xAI’s API.
API pricing is per million tokens unless noted otherwise.
| # | Model | Modality | Score | Params | Released |
|---|---|---|---|---|---|
| 1 | Grok 4.1 (Thinking)API | text | SS87.7 | — | Nov 2025 |
| 2 | Grok 4.1API |
Each family is a model series. Browse all releases in a family with their own leaderboard.
xAI ships 17 models that we track. Of those, 0 are open weight and 17 are accessed through their API.
It depends on the model. See the open-weight section above for models you can run locally, and the API-only section for closed models priced per token.
By composite score, Grok 4.1 (Thinking) is currently the top xAI model in our directory. Composite score blends benchmarks, popularity, efficiency, and versatility.
Full Directory
Open the full directory to filter by hardware, capability, license, and benchmark score.
Open Directory
See every release in a family side by side, with a timeline and a leaderboard. Useful when you have already picked a series and want the right size.
SS87.5 |
| — |
| Nov 2025 |
| 3 | Grok 4.20 Beta1API | text | AA83.1 | — | Feb 2026 |
| 4 | Grok 4.20 Multi-Agent Beta 0309API | text | AA72.5 | — | Mar 2026 |
| 5 | Grok 3 Mini BetaAPI | text | BB69.7 | — | Mar 2025 |
| 6 | Grok 4.3 betaAPI | text | BB68.0 | 500B | Apr 2026 |
| 7 | Grok 4.3API | text | BB67.6 | — | Apr 2026 |
| 8 | Grok 4 (0709)API | text | BB64.0 | — | Jul 2025 |
| 9 | Grok 4.5API | text | BB63.7 | — | Jul 2026 |
| 10 | Grok 4.1 Fast ReasoningAPI | text | BB62.9 | — | Nov 2025 |
May 30
Apr 30
Apr 17
Mar 9
Mar 9
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.
SS87.5 |
| — |
| Nov 2025 |
| 3 | Grok 4.20 Beta1API | text | AA83.1 | — | Feb 2026 |
| 4 | Grok 4.20 Multi-Agent Beta 0309API | text | AA72.5 | — | Mar 2026 |
| 5 | Grok 3 Mini BetaAPI | text | BB69.7 | — | Mar 2025 |
| 6 | Grok 4.3 betaAPI | text | BB68.0 | 500B | Apr 2026 |
| 7 | Grok 4.3API | text | BB67.6 | — | Apr 2026 |
| 8 | Grok 4 (0709)API | text | BB64.0 | — | Jul 2025 |
| 9 | Grok 4.5API | text | BB63.7 | — | Jul 2026 |
| 10 | Grok 4.1 Fast ReasoningAPI | text | BB62.9 | — | Nov 2025 |
| 11 | Grok Imagine Video 1.5API | video | BB62.6 | — | May 2026 |
| 12 | Grok 4 Fast ReasoningAPI | text | BB62.2 | — | Sep 2025 |
| 13 | Grok 2API | text | BB60.5 | — | Aug 2024 |
| 14 | Grok 3 Mini HighAPI | text | BB59.7 | — | Mar 2025 |
| 15 | Grok 4.20 Beta 0309 ReasoningAPI | text | BB59.0 | — | Mar 2026 |
| 16 | Grok 3 Preview 02-24API | text | CC54.4 | — | Feb 2025 |
| 17 | Grok 4 Fast ChatAPI | text | CC53.9 | — | Sep 2025 |
