Aya Expanse 8B
Stored tensors can include buffers and repeated shared weights. A verified unique parameter count is unavailable. Checkpoint size is not the memory required to run the model.
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AI modelsAya Expanse 8B
AI model Released
- Context window
- 8,000 tokens
- Maximum output
- 4,000 tokens
- Open weights
- Yes
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
Aya Expanse 8B
1,180.87 rating
Confidence interval: 1,157.59 – 1,204.16
618 votes
- Category
- chinese
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / codinghuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,160.23 rating
Confidence interval: 1,145.80 – 1,174.66
1567 votes
- Category
- coding
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / creative_writinghuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,167.75 rating
Confidence interval: 1,152.82 – 1,182.68
1528 votes
- Category
- creative_writing
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / englishhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,190.79 rating
Confidence interval: 1,182.10 – 1,199.48
5497 votes
- Category
- english
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / exclude_tieshuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,052.53 rating
Confidence interval: 1,040.94 – 1,064.13
6336 votes
- Category
- exclude_ties
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / experthuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,152.38 rating
Confidence interval: 1,128.93 – 1,175.83
600 votes
- Category
- expert
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / germanhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,187.63 rating
Confidence interval: 1,150.37 – 1,224.89
240 votes
- Category
- german
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / hard_promptshuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,155.81 rating
Confidence interval: 1,144.57 – 1,167.04
2576 votes
- Category
- hard_prompts
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,153.82 rating
Confidence interval: 1,139.50 – 1,168.14
1620 votes
- Category
- hard_prompts_english
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,176.23 rating
Confidence interval: 1,158.33 – 1,194.13
1096 votes
- Category
- industry_business_and_management_and_financial_operations
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,149.79 rating
Confidence interval: 1,136.12 – 1,163.46
1784 votes
- Category
- industry_entertainment_and_sports_and_media
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,224.90 rating
Confidence interval: 1,200.01 – 1,249.80
551 votes
- Category
- industry_legal_and_government
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,203.65 rating
Confidence interval: 1,189.36 – 1,217.93
1689 votes
- Category
- industry_life_and_physical_and_social_science
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,176.42 rating
Confidence interval: 1,160.41 – 1,192.43
1146 votes
- Category
- industry_mathematical
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,202.93 rating
Confidence interval: 1,176.06 – 1,229.79
470 votes
- Category
- industry_medicine_and_healthcare
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,176.69 rating
Confidence interval: 1,164.87 – 1,188.52
2471 votes
- Category
- industry_software_and_it_services
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,185.43 rating
Confidence interval: 1,174.24 – 1,196.61
2746 votes
- Category
- industry_writing_and_literature_and_language
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / instruction_followinghuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,154.70 rating
Confidence interval: 1,145.18 – 1,164.21
4006 votes
- Category
- instruction_following
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / japanesehuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,120.43 rating
Confidence interval: 1,084.80 – 1,156.06
231 votes
- Category
- japanese
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / longer_queryhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,191.11 rating
Confidence interval: 1,176.39 – 1,205.83
1483 votes
- Category
- longer_query
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / mathhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,168.09 rating
Confidence interval: 1,153.02 – 1,183.16
1307 votes
- Category
- math
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / multi_turnhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,159.60 rating
Confidence interval: 1,145.24 – 1,173.97
1746 votes
- Category
- multi_turn
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / non_englishhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,179.90 rating
Confidence interval: 1,170.77 – 1,189.03
4321 votes
- Category
- non_english
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / overallhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,185.09 rating
Confidence interval: 1,178.17 – 1,192.01
9818 votes
- Category
- overall
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / russianhuman preference · 2026-10-28 · rating
Aya Expanse 8B
1,197.11 rating
Confidence interval: 1,182.42 – 1,211.81
1474 votes
- Category
- russian
- Evaluated configuration
- Aya Expanse 8B
- Evaluation type
- human preference
Arena text preference / chinesehuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,180.92 rating
Confidence interval: 1,157.63 – 1,204.20
618 votes
- Category
- chinese
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / codinghuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,160.33 rating
Confidence interval: 1,145.90 – 1,174.77
1567 votes
- Category
- coding
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / creative_writinghuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,167.91 rating
Confidence interval: 1,152.98 – 1,182.84
1528 votes
- Category
- creative_writing
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / englishhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,190.74 rating
Confidence interval: 1,182.05 – 1,199.43
5497 votes
- Category
- english
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / exclude_tieshuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,052.55 rating
Confidence interval: 1,040.95 – 1,064.14
6336 votes
- Category
- exclude_ties
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / experthuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,152.42 rating
Confidence interval: 1,128.96 – 1,175.87
600 votes
- Category
- expert
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / germanhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,187.63 rating
Confidence interval: 1,150.39 – 1,224.87
240 votes
- Category
- german
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / hard_promptshuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,155.80 rating
Confidence interval: 1,144.56 – 1,167.03
2576 votes
- Category
- hard_prompts
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,153.70 rating
Confidence interval: 1,139.38 – 1,168.03
1620 votes
- Category
- hard_prompts_english
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,176.27 rating
Confidence interval: 1,158.36 – 1,194.17
1096 votes
- Category
- industry_business_and_management_and_financial_operations
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,149.85 rating
Confidence interval: 1,136.18 – 1,163.52
1784 votes
- Category
- industry_entertainment_and_sports_and_media
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,224.65 rating
Confidence interval: 1,199.75 – 1,249.55
551 votes
- Category
- industry_legal_and_government
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,203.63 rating
Confidence interval: 1,189.34 – 1,217.91
1689 votes
- Category
- industry_life_and_physical_and_social_science
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,176.42 rating
Confidence interval: 1,160.41 – 1,192.42
1146 votes
- Category
- industry_mathematical
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,202.99 rating
Confidence interval: 1,176.11 – 1,229.86
470 votes
- Category
- industry_medicine_and_healthcare
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,176.78 rating
Confidence interval: 1,164.95 – 1,188.61
2471 votes
- Category
- industry_software_and_it_services
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,185.49 rating
Confidence interval: 1,174.30 – 1,196.68
2746 votes
- Category
- industry_writing_and_literature_and_language
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / instruction_followinghuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,154.70 rating
Confidence interval: 1,145.19 – 1,164.22
4006 votes
- Category
- instruction_following
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / japanesehuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,120.26 rating
Confidence interval: 1,084.66 – 1,155.86
231 votes
- Category
- japanese
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / longer_queryhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,191.15 rating
Confidence interval: 1,176.44 – 1,205.87
1483 votes
- Category
- longer_query
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / mathhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,168.05 rating
Confidence interval: 1,152.98 – 1,183.12
1307 votes
- Category
- math
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / multi_turnhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,159.60 rating
Confidence interval: 1,145.23 – 1,173.97
1746 votes
- Category
- multi_turn
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / non_englishhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,179.99 rating
Confidence interval: 1,170.86 – 1,189.12
4321 votes
- Category
- non_english
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / overallhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,185.07 rating
Confidence interval: 1,178.16 – 1,191.99
9818 votes
- Category
- overall
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Arena text preference / russianhuman preference · 2026-10-15 · rating
Aya Expanse 8B
1,197.27 rating
Confidence interval: 1,182.57 – 1,211.96
1474 votes
- Category
- russian
- Evaluated configuration
- c4ai-aya-expanse-8b
- Evaluation type
- human preference
Run it locally
Capabilities
- Context window
- 8,000 tokens
- Maximum output
- 4,000 tokens
- Reasoning
- No
- Tool calling
- No
- Open weights
- Yes
- Model license
- CC-BY-NC-4.0
- Checkpoint tensor payload
- 14.95 GiB
Input modalities
- text
Output modalities
- text
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