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stepfun

step-1o-turbo-202506

Model evaluation

Capability & preference

Human preference · Arena

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

step-1o-turbo-202506 1335.6 step-1o-turbo-202506 · 95% interval 1328.8–1342.5 · 8,901 votes · 2026-10-15

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 · 2026-10-15 · rating

step-1o-turbo-202506

1,380.15 rating

Confidence interval: 1,354.97 – 1,405.34

545 votes

Category
chinese
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / codinghuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,338.91 rating

Confidence interval: 1,324.10 – 1,353.73

1494 votes

Category
coding
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / creative_writinghuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,306.80 rating

Confidence interval: 1,287.92 – 1,325.68

991 votes

Category
creative_writing
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / englishhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,352.71 rating

Confidence interval: 1,343.06 – 1,362.37

3993 votes

Category
english
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / exclude_tieshuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,288.29 rating

Confidence interval: 1,278.81 – 1,297.77

6353 votes

Category
exclude_ties
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / experthuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,307.59 rating

Confidence interval: 1,281.09 – 1,334.08

484 votes

Category
expert
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / germanhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,315.38 rating

Confidence interval: 1,283.81 – 1,346.95

341 votes

Category
german
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / hard_promptshuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,335.00 rating

Confidence interval: 1,325.16 – 1,344.85

3693 votes

Category
hard_prompts
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / hard_prompts_englishhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,354.23 rating

Confidence interval: 1,340.21 – 1,368.25

1704 votes

Category
hard_prompts_english
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_business_and_management_and_financial_operationshuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,328.78 rating

Confidence interval: 1,313.06 – 1,344.50

1384 votes

Category
industry_business_and_management_and_financial_operations
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_entertainment_and_sports_and_mediahuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,293.01 rating

Confidence interval: 1,278.02 – 1,308.00

1467 votes

Category
industry_entertainment_and_sports_and_media
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_legal_and_governmenthuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,354.49 rating

Confidence interval: 1,331.34 – 1,377.65

652 votes

Category
industry_legal_and_government
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_life_and_physical_and_social_sciencehuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,358.12 rating

Confidence interval: 1,342.92 – 1,373.32

1503 votes

Category
industry_life_and_physical_and_social_science
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_mathematicalhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,344.52 rating

Confidence interval: 1,320.35 – 1,368.68

569 votes

Category
industry_mathematical
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_medicine_and_healthcarehuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,349.49 rating

Confidence interval: 1,325.25 – 1,373.73

596 votes

Category
industry_medicine_and_healthcare
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_software_and_it_serviceshuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,353.26 rating

Confidence interval: 1,342.13 – 1,364.39

2790 votes

Category
industry_software_and_it_services
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / industry_writing_and_literature_and_languagehuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,309.19 rating

Confidence interval: 1,295.49 – 1,322.88

1828 votes

Category
industry_writing_and_literature_and_language
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / instruction_followinghuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,309.66 rating

Confidence interval: 1,296.89 – 1,322.43

2091 votes

Category
instruction_following
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / longer_queryhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,347.89 rating

Confidence interval: 1,331.57 – 1,364.20

1270 votes

Category
longer_query
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / mathhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,317.84 rating

Confidence interval: 1,294.12 – 1,341.56

564 votes

Category
math
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / multi_turnhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,340.93 rating

Confidence interval: 1,324.78 – 1,357.07

1354 votes

Category
multi_turn
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / non_englishhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,312.68 rating

Confidence interval: 1,303.87 – 1,321.50

4908 votes

Category
non_english
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / overallhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,335.65 rating

Confidence interval: 1,328.79 – 1,342.50

8901 votes

Category
overall
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / polishhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,303.98 rating

Confidence interval: 1,288.50 – 1,319.46

1584 votes

Category
polish
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference
Arena text preference / russianhuman preference · 2026-10-15 · rating

step-1o-turbo-202506

1,327.04 rating

Confidence interval: 1,305.87 – 1,348.21

653 votes

Category
russian
Evaluated configuration
step-1o-turbo-202506
Evaluation type
human preference

Run it locally

Inference · memory estimate

step-1o-turbo-202506

Not enough verified architecture information for a reliable VRAM estimate.

Capabilities

Model license
Proprietary