readable AI benchmarks (simplified)

readable AI benchmarks

StepFun

Step 5 Preview

reasoning · open weights · Sep 16, 2026

Step 5 Preview has a Quality Score of 43.4, ranking 73rd among 230 scored models. Per 1M tokens, pricing is $1.00 input, $2.70 output, and $0.100 cached input. It accepts text, image, and video input, outputs text, and has a 1M token context window. Its Reliability Score is 58.2, ranking 67th among 239 scored models, above average (total average: 46.3). Its Value Score is 32.7, high compared with the total Value average of 28.3.

Quality Score43.4coverage 100.0%: AA Intelligence and AA-Omniscience outcomes available
Value Score32.7
Factual reliability58.2
Cache Discount90%

Model specification

Reasoning
reasoning
Input modalities
text, image, video
Output modalities
text
Context window
1M tokens
Weights
open weights

Token prices USD per 1M tokens

Input
$1.00
Output
$2.70
Cached Input
$0.100
Cache write
not available
Cost per task
$2.35

Capability

Intelligence
28.5
Omniscience (native net)
16.4
Correct
36.4%
Blended price
$0.540

Answer outcomes

Fully graded outcomes (Correct + Incorrect): 56.3%

Correct 36.4%Incorrect 19.9%Partial / not attempted 43.7%

Artificial Analysis benchmarks aa-v5

Current Intelligence Index components

AA-Briefcase v1.1
1424.5 Elo
AutomationBench-AA
51.0%
private 657-task split from dataset v1.0.6
GDP.pdf
14.8%
FrontierCode v2.0
12.0%
AA Stirrup · 132 tasks, 3 attempts per task
Terminal-Bench v4.0
33.3%
AA mini-swe-agent standardized runs · 66 tasks, pass@1 averaged over 3 repeats per task
AA-Omniscience v1.1
16.4 native net
HLE-Diamond
24.3%
CritPt v2 Hard
32.5%
AA Stirrup · hard subset, 40 of 70 problems
Terminal-Bench-Science v0.1.0
2.4%

Standalone evaluations

GDPval-AA v2.1
1594.0 Elo

Historical evaluations

SciCode v1.0.1
58.9%
AA Long Context Reasoning v1.1
88.3%
Humanity's Last Exam
46.5%
CritPt
20.9%
FrontierCode
38.4%

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