StepFun
Step 5 PreviewOpen weights
Released 2026-09-18 · Context 1049K · Data snapshot 2026-10-22
Overall score
54.2
Ranked #36Benchmark coverage
68.2%
15 third-party benchmarks
Context window
1049K
tokens
Input price
$1.00
Cache read $0.10
Output price
$2.70
per million tokens
OpenRouter usage
#15
2.3T tokens/day
Prices converted at snapshot-day rate (USD/CNY 6.6761)
Dimension performance
Reasoning
65.8
Human preference
63.9
Office
59.9
Coding
44.3
Above averageBelow averageAnchored at 50 (reference models’ average); every 15 points ≈ one standard deviation
Benchmark details
Coding3 items
LiveBench 2.0 · Coding85.6
LiveBench 2.0 · Long Agentic27.5
LiveBench 2.0 · Browser24
Reasoning2 items
LiveBench 2.0 · Reasoning83.8
AA Intelligence Index43.7
Office9 items
LiveBench 2.0 · Design76.9
LiveBench 2.0 · Research72.8
LiveBench 2.0 · Data Analysis63.5
AA Economics52.8
AA Strategy & Ops47.1
AA Legal46.2
AA Finance & Accounting45.4
AA Engineering45
AA Healthcare & Medical41.1
Human preference1 items
LMArena Human Blind Vote1446.2508
Multiple reasoning tiers of the same benchmark take the best value; raw scores have different scales and are not comparable across benchmarks.
Score trend
2026-10-202026-10-22
View daily data
| 2026-10-22 | 54.2 |
| 2026-10-21 | 54.0 |
| 2026-10-20 | 54.1 |