Grok 4 Fast
SpaceXAI
42.9#225 of 427 overall
- Input / output
- US$ 0,20 / US$ 0,50 US$ per 1M tokens
- Context
- — tokens
- Release
- 09/19/2025 release date
- Weights
- Closed
- Speed
- 0 tok/s first token in 0.00 s
Family history
The 2 versions of this family, from first to newest, by release date. Click a point to open that version.
See the data as a table
| Model | Released | Score | Rank | Elo Arena |
|---|---|---|---|---|
| Grok 4 Fast | 09/19/2025 | 42.9 | #225 | 1407 |
| Grok 4.1 Fast | 11/19/2025 | 43.2 | #218 | 1408 |
Scores by source
Scores by sourcepercentile = % of ranked models it beats| Metric | Value | Percentile | Source |
|---|---|---|---|
| Arena text (Elo) weight 2 | 1407 | 48% | LMArena |
| Arena WebDev (Elo) weight 1 | 1159 | 1% | LMArena |
| Humanity's Last Exam weight 1 | 19.1 | 67% | Artificial Analysis |
| GPQA Diamond | 84.7 | 77% | Artificial Analysis |
| Long-context reasoning | 73.7 | 71% | Artificial Analysis |
By category
| Category | Score | Rank | Metrics |
|---|---|---|---|
| Coding | 25.4 | #118 | Arena WebDev (Elo) |
| Reasoning | 64.7 | #115 | Humanity's Last Exam, GPQA Diamond |
| Research | 60.4 | #98 | Long-context reasoning |
| Design | 25.4 | #118 | Arena WebDev (Elo) |
| Chat | 49.1 | #102 | Arena text (Elo) |
History
RankingIA score on each collection day (hover to see the rank).
Daily collection started on 10/30/2026. The chart appears from the second day the model is ranked.