SpaceXAIGrok Code Fast 1
Grok Code Fast 1 is a SpaceXAI proprietary reasoning model, released 28 Aug 2025. Its best configuration ranks #529 of 785 on the BenchLeader Index at 44.7 ±4.8, in the lower half. The ± is the point: 315 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in long context (51) and lowest in coding (33). Last measured 23 Oct 2026.
- Blended price
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- Output speed
- –
- First answer
- –
- Context
- 256k
- Full answer
- –
- Cost per run
- –
- Released
- 28 Aug 2025
- Overall index45
- Reasoning44
- Coding33
- Agents & tools41
- Knowledge45
- Instruction following44
- Long context51
- Composite45
How its index has moved
9 Sept 2026 to 21 Oct 2026The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.
Benchmark results
See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Reasoning
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| GPQA Diamond (AA)not in index | 72.7%#274 | Artificial Analysis | |
| Humanity's Last Exam (AA)not in index | 8.0%#353 | Artificial Analysis | |
| Kagi LLM Benchmark | 52.5%#72 | Kagi LLM Benchmark | |
| CritPt | 0.0%#315 | Artificial Analysis |
Coding
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| WeirdML | 35.1%#128 | WeirdML | |
| Arena WebDev | 1167#137 | Arena (LMArena) | |
| LiveCodeBench | 62.0%#100 | Vals AI | |
| ALE-Benchnot in index | 587.7#99 | Epoch AI Benchmarking Hub |
Agents & tools
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| Terminal-Bench | 25.8%#65 | Terminal-Bench | |
| Terminal-Bench Hard | 17.4%#178 | Artificial Analysis | |
| τ²-Bench Telecom (AA)not in index | 75.7%#136 | Artificial Analysis |
Knowledge
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| AA-Omniscience | -37.1#310 | Artificial Analysis | |
| AA-Omniscience: accuracynot in index | 23.6%#256 | Artificial Analysis | |
| AA-Omniscience: non-hallucinationnot in index | 20.7%#274 | Artificial Analysis |
Instruction following
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| IFBench | 41.4%#250 | Artificial Analysis |
Long context
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| AA-LCR | 53.0%#309 | Artificial Analysis |
Composite
| Benchmark | not stated | Source | Trend |
|---|---|---|---|
| AA Intelligence Index v4.3.2 | 14.1#301 | Artificial Analysis |
More from SpaceXAI
See also
Questions people ask
- What are Grok Code Fast 1's benchmark scores?
- As of 25 Oct 2026, Grok Code Fast 1 scores 44.7 ±4.8 on the BenchLeader Index, strongest in long context (51) and weakest in coding (33). That rests on 11 independent benchmark results, and every score on this page links to its publisher.
- How does Grok Code Fast 1 rank?
- Grok Code Fast 1 is #529 of 785 ranked configurations on 25 Oct 2026. 315 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Opus 5.5 (max effort) at 72.6.
- When was Grok Code Fast 1 released?
- SpaceXAI released Grok Code Fast 1 on 28 Aug 2025.
Data as of 25 Oct 2026. Compare with another model.
Cite as: BenchLeader, “Grok Code Fast 1: benchmarks, pricing, speed and rank”, data as of 25 Oct 2026, https://www.benchleader.com/models/grok-code-fast-1.