Step 5 Preview

by StepFun

Released · 112 days after Step 3.7 Flash

Key info

Context window
Max output
Input price
$1.00 /1M
Output price
$2.70 /1M

Prices are the median across providers tracked by Artificial Analysis, not Opper billing.

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#24 of 644 LLMs
TierStrong
Output speed93 tok/s
First token1.80s
Intelligence Index43.7
Reasoning & knowledge
Humanity's Last Exam
47%
Long-context reasoning
88%
Coding
SciCode
59%

Available routes

No routes currently available — Step 5 Preview isn't routed through the Opper gateway right now. It's tracked here for its release history.

Contact us about this model →

Available models from StepFun

Start building with 700+ models

One API key. Every major provider. Up and running in minutes.

Get startedView Documentation