Grok 4.1 Fast (Reasoning)
Closed weights. No supported local deployment or GPU requirement is published.
GeekRadar / The comparison desk
COMPARE.
AI modelsGrok 4.1 Fast (Reasoning)
AI model Released
- Context window
- 2,000,000 tokens
- Maximum output
- 30,000 tokens
- Open weights
- No
Capability & preference
Human preference · Arena
Overall text preferences from head-to-head votes. Not factual accuracy or a task-success rate.
Recorded results
Only the same benchmark, version, workload, scenario and unit share a row. Missing results are not zero. System results include the full submitted hardware and software configuration.
Arena text preference / chinesehuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,440.83 rating
Confidence interval: 1,431.73 – 1,449.92
4399 votes
- Category
- chinese
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / codinghuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,411.40 rating
Confidence interval: 1,405.79 – 1,417.02
13893 votes
- Category
- coding
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / creative_writinghuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,394.24 rating
Confidence interval: 1,387.54 – 1,400.93
8994 votes
- Category
- creative_writing
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / englishhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,419.94 rating
Confidence interval: 1,415.45 – 1,424.44
24358 votes
- Category
- english
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / exclude_tieshuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,391.50 rating
Confidence interval: 1,387.11 – 1,395.89
41559 votes
- Category
- exclude_ties
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / experthuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,397.98 rating
Confidence interval: 1,388.81 – 1,407.15
4444 votes
- Category
- expert
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / frenchhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,415.88 rating
Confidence interval: 1,399.40 – 1,432.36
1429 votes
- Category
- french
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / germanhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,403.38 rating
Confidence interval: 1,383.59 – 1,423.17
930 votes
- Category
- german
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / hard_promptshuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,407.32 rating
Confidence interval: 1,403.28 – 1,411.37
33652 votes
- Category
- hard_prompts
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,414.28 rating
Confidence interval: 1,408.75 – 1,419.81
14589 votes
- Category
- hard_prompts_english
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,384.04 rating
Confidence interval: 1,377.92 – 1,390.15
11039 votes
- Category
- industry_business_and_management_and_financial_operations
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,381.08 rating
Confidence interval: 1,374.99 – 1,387.17
11149 votes
- Category
- industry_entertainment_and_sports_and_media
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,402.29 rating
Confidence interval: 1,392.96 – 1,411.62
4208 votes
- Category
- industry_legal_and_government
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,420.06 rating
Confidence interval: 1,413.58 – 1,426.53
9481 votes
- Category
- industry_life_and_physical_and_social_science
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,403.56 rating
Confidence interval: 1,392.44 – 1,414.68
2954 votes
- Category
- industry_mathematical
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,412.05 rating
Confidence interval: 1,402.34 – 1,421.76
3864 votes
- Category
- industry_medicine_and_healthcare
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,417.42 rating
Confidence interval: 1,412.62 – 1,422.21
20616 votes
- Category
- industry_software_and_it_services
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,387.21 rating
Confidence interval: 1,381.56 – 1,392.87
13402 votes
- Category
- industry_writing_and_literature_and_language
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / instruction_followinghuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,376.09 rating
Confidence interval: 1,370.95 – 1,381.23
17255 votes
- Category
- instruction_following
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / japanesehuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,349.18 rating
Confidence interval: 1,320.65 – 1,377.70
445 votes
- Category
- japanese
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / koreanhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,360.48 rating
Confidence interval: 1,340.38 – 1,380.59
886 votes
- Category
- korean
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / longer_queryhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,389.81 rating
Confidence interval: 1,384.69 – 1,394.92
18596 votes
- Category
- longer_query
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / mathhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,407.84 rating
Confidence interval: 1,397.88 – 1,417.80
3609 votes
- Category
- math
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / multi_turnhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,389.06 rating
Confidence interval: 1,382.65 – 1,395.47
10288 votes
- Category
- multi_turn
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / non_englishhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,391.33 rating
Confidence interval: 1,387.34 – 1,395.32
33138 votes
- Category
- non_english
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / overallhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,407.93 rating
Confidence interval: 1,404.74 – 1,411.11
57500 votes
- Category
- overall
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / polishhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,399.83 rating
Confidence interval: 1,384.41 – 1,415.24
1445 votes
- Category
- polish
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / russianhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,386.74 rating
Confidence interval: 1,379.50 – 1,393.97
7086 votes
- Category
- russian
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / spanishhuman preference · 2026-10-28 · rating
Grok 4.1 Fast (Reasoning)
1,412.52 rating
Confidence interval: 1,397.37 – 1,427.68
1641 votes
- Category
- spanish
- Evaluated configuration
- Grok 4.1 Fast (Reasoning)
- Evaluation type
- human preference
Arena text preference / chinesehuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,441.00 rating
Confidence interval: 1,431.89 – 1,450.10
4395 votes
- Category
- chinese
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / codinghuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,411.34 rating
Confidence interval: 1,405.73 – 1,416.95
13925 votes
- Category
- coding
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / creative_writinghuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,394.17 rating
Confidence interval: 1,387.47 – 1,400.86
9001 votes
- Category
- creative_writing
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / englishhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,419.92 rating
Confidence interval: 1,415.42 – 1,424.42
24370 votes
- Category
- english
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / exclude_tieshuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,391.60 rating
Confidence interval: 1,387.21 – 1,395.99
41600 votes
- Category
- exclude_ties
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / experthuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,398.07 rating
Confidence interval: 1,388.90 – 1,407.25
4456 votes
- Category
- expert
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / frenchhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,415.40 rating
Confidence interval: 1,398.90 – 1,431.91
1434 votes
- Category
- french
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / germanhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,403.61 rating
Confidence interval: 1,383.77 – 1,423.45
930 votes
- Category
- german
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / hard_promptshuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,407.35 rating
Confidence interval: 1,403.31 – 1,411.40
33678 votes
- Category
- hard_prompts
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,414.11 rating
Confidence interval: 1,408.58 – 1,419.65
14590 votes
- Category
- hard_prompts_english
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,384.39 rating
Confidence interval: 1,378.27 – 1,390.51
11039 votes
- Category
- industry_business_and_management_and_financial_operations
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,381.17 rating
Confidence interval: 1,375.09 – 1,387.26
11171 votes
- Category
- industry_entertainment_and_sports_and_media
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,402.39 rating
Confidence interval: 1,393.05 – 1,411.72
4211 votes
- Category
- industry_legal_and_government
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,420.42 rating
Confidence interval: 1,413.94 – 1,426.90
9473 votes
- Category
- industry_life_and_physical_and_social_science
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,403.35 rating
Confidence interval: 1,392.22 – 1,414.48
2955 votes
- Category
- industry_mathematical
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,412.31 rating
Confidence interval: 1,402.59 – 1,422.03
3865 votes
- Category
- industry_medicine_and_healthcare
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,417.37 rating
Confidence interval: 1,412.58 – 1,422.17
20649 votes
- Category
- industry_software_and_it_services
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,387.15 rating
Confidence interval: 1,381.49 – 1,392.81
13401 votes
- Category
- industry_writing_and_literature_and_language
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / instruction_followinghuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,376.05 rating
Confidence interval: 1,370.91 – 1,381.20
17269 votes
- Category
- instruction_following
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / japanesehuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,348.97 rating
Confidence interval: 1,320.47 – 1,377.47
446 votes
- Category
- japanese
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / koreanhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,361.29 rating
Confidence interval: 1,341.10 – 1,381.47
885 votes
- Category
- korean
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / longer_queryhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,390.05 rating
Confidence interval: 1,384.93 – 1,395.16
18626 votes
- Category
- longer_query
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / mathhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,408.15 rating
Confidence interval: 1,398.18 – 1,418.11
3609 votes
- Category
- math
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / multi_turnhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,389.04 rating
Confidence interval: 1,382.62 – 1,395.45
10284 votes
- Category
- multi_turn
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / non_englishhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,391.47 rating
Confidence interval: 1,387.48 – 1,395.46
33167 votes
- Category
- non_english
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / overallhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,408.00 rating
Confidence interval: 1,404.82 – 1,411.18
57541 votes
- Category
- overall
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / polishhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,400.06 rating
Confidence interval: 1,384.64 – 1,415.48
1444 votes
- Category
- polish
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / russianhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,387.20 rating
Confidence interval: 1,379.96 – 1,394.44
7085 votes
- Category
- russian
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Arena text preference / spanishhuman preference · 2026-10-15 · rating
Grok 4.1 Fast (Reasoning)
1,413.07 rating
Confidence interval: 1,397.89 – 1,428.26
1634 votes
- Category
- spanish
- Evaluated configuration
- grok-4-1-fast-reasoning
- Evaluation type
- human preference
Run it locally
API cost
Standard text-token estimate. Excludes taxes, caching, batch discounts, reasoning and multimodal surcharges. Provider limits and regional availability may differ.
Grok 4.1 Fast (Reasoning)
Capabilities
- Context window
- 2,000,000 tokens
- Maximum output
- 30,000 tokens
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- No
- Model license
- Proprietary
Input modalities
- text
- image
Output modalities
- text
0 selected Compare 0