Back

StepFun

Step 5 Preview

ReasoningOpen weightsModels.dev
Intelligence
28.5
Rank 135 of 768 measured models
Output speed
141 t/s
Rank 113 of 425 measured models
Price/1M
$1.43
Rank 461 of 726 measured models
Context window
1M
Rank 90 of 1296 measured models
Cost per task
$2.35
Rank 172 of 218 measured models

Step 5 Preview scores 28.5 on the Artificial Analysis Intelligence Index, ranking 135th of 768 measured models. The closest models on this index are DeepSeek V4.1 Flash (28.6), MiMo-V2-Pro (28.6), and GPT-5.2 Codex (Xhigh) (28.5). At $1.43 per million tokens (3:1 input/output blended price), it is cheaper than GPT-5.2 Codex (Xhigh) ($4.81), more expensive than DeepSeek V4.1 Flash ($0.525). With an output speed of 141 t/s, it is faster than GPT-5.2 Codex (Xhigh) (99.9 t/s), slower than DeepSeek V4.1 Flash (203 t/s).

Artificial Analysis Indices
Intelligence28.5
Rank 135 of 768 measured models
Capability indexes
Performance in specific industries, measured by Artificial Analysis
Finance & Accounting40.5
Rank 76 of 241 measured models
Strategy & Ops44.2
Rank 78 of 241 measured models
Legal38.6
Rank 82 of 241 measured models
Healthcare & Medical39.9
Rank 59 of 185 measured models
Engineering37.0
Rank 81 of 240 measured models
Economics40.2
Rank 97 of 248 measured models
Cyber Index
Artificial Analysis · v1
Cyber Index47.7%Rank 10 of 24 measured models
Successes
47.7%
Safety blocks
0.0%
Failures
52.3%
Cost per task$1.80
Standard Benchmarks
FrontierCode 2.012.0%
Rank 23 of 28 measured models
Terminal-Bench-Science2.4%
Rank 22 of 28 measured models
HLE-Diamond24.3%
Rank 16 of 28 measured models
CritPt v254.6%
Rank 17 of 28 measured models
AutomationBench-AA51.0%
Rank 21 of 28 measured models
GDP.pdf (all-pass)14.8%
Rank 22 of 28 measured models
HLE46.5%
Rank 45 of 681 measured models
SciCode58.9%
Rank 19 of 248 measured models
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.

Preferences and analytics

Rybbit: visits, performance, clicks, copies, forms and session replay (masked inputs), with your permission. Refusing does not limit the site.

Privacy

Allow navigation analytics?

With your permission, Rybbit measures visits, performance and interactions (clicks, copies, forms), including session replay, to improve BenchSift. Input values are masked in replays. Refusing does not limit the site.

Your choice is stored for 180 days. Change it at any time using “Privacy preferences” in the footer. Withdrawal reloads the page.

No choice stored: Rybbit is disabled.

Privacy