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stepfun

Step-2 16K Exp (202412)

Model evaluation

Capability & preference

Human preference · Arena

Overall text preferences from head-to-head votes. Not factual accuracy or a task-success rate.

Step-2 16K Exp (202412) 1320.9 Step-2 16K Exp (202412) · 95% interval 1312.3–1329.4 · 4,833 votes · 2026-10-28

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

Step-2 16K Exp (202412)

1,331.15 rating

Confidence interval: 1,298.95 – 1,363.35

328 votes

Category
chinese
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / codinghuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,315.92 rating

Confidence interval: 1,296.26 – 1,335.58

737 votes

Category
coding
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / creative_writinghuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,327.30 rating

Confidence interval: 1,306.68 – 1,347.92

751 votes

Category
creative_writing
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / englishhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,344.41 rating

Confidence interval: 1,333.65 – 1,355.17

2781 votes

Category
english
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / exclude_tieshuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,271.88 rating

Confidence interval: 1,258.16 – 1,285.60

3048 votes

Category
exclude_ties
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / experthuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,278.37 rating

Confidence interval: 1,247.58 – 1,309.16

310 votes

Category
expert
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / hard_promptshuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,298.96 rating

Confidence interval: 1,283.75 – 1,314.18

1221 votes

Category
hard_prompts
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,308.47 rating

Confidence interval: 1,289.96 – 1,326.98

786 votes

Category
hard_prompts_english
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,283.02 rating

Confidence interval: 1,258.40 – 1,307.63

506 votes

Category
industry_business_and_management_and_financial_operations
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,291.29 rating

Confidence interval: 1,273.03 – 1,309.56

873 votes

Category
industry_entertainment_and_sports_and_media
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,336.61 rating

Confidence interval: 1,303.27 – 1,369.94

278 votes

Category
industry_legal_and_government
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,329.90 rating

Confidence interval: 1,310.51 – 1,349.29

863 votes

Category
industry_life_and_physical_and_social_science
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,310.14 rating

Confidence interval: 1,287.84 – 1,332.43

543 votes

Category
industry_mathematical
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,354.73 rating

Confidence interval: 1,319.58 – 1,389.88

265 votes

Category
industry_medicine_and_healthcare
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,315.00 rating

Confidence interval: 1,299.38 – 1,330.63

1200 votes

Category
industry_software_and_it_services
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,303.42 rating

Confidence interval: 1,287.97 – 1,318.87

1326 votes

Category
industry_writing_and_literature_and_language
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / instruction_followinghuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,286.61 rating

Confidence interval: 1,274.08 – 1,299.15

1950 votes

Category
instruction_following
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / longer_queryhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,306.22 rating

Confidence interval: 1,285.18 – 1,327.26

693 votes

Category
longer_query
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / mathhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,304.46 rating

Confidence interval: 1,284.59 – 1,324.33

642 votes

Category
math
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / multi_turnhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,292.35 rating

Confidence interval: 1,272.33 – 1,312.36

805 votes

Category
multi_turn
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / non_englishhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,289.87 rating

Confidence interval: 1,277.31 – 1,302.42

2052 votes

Category
non_english
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / overallhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,320.88 rating

Confidence interval: 1,312.34 – 1,329.42

4833 votes

Category
overall
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference
Arena text preference / russianhuman preference · 2026-10-28 · rating

Step-2 16K Exp (202412)

1,323.80 rating

Confidence interval: 1,302.08 – 1,345.51

642 votes

Category
russian
Evaluated configuration
Step-2 16K Exp (202412)
Evaluation type
human preference

Run it locally

Inference · memory estimate

Step-2 16K Exp (202412)

Not enough verified architecture information for a reliable VRAM estimate.

Capabilities

Model license
Proprietary