阶跃发布旗舰模型 Step 5 Preview (StepFun newsroom post, 20 September 2026)
StepFun newsroom post dated 20 September 2026 introducing Step 5 Preview, read in the stepfun.com build file as it stood on 29 October 2026.
- Issued by
- StepFun / 阶跃星辰
- Authors credited
- No authorship claim recorded yet. The source record lists StepFun.
- Dates
- Announced 2026-09-20 issue evidence
- Exact source
- 阶跃星辰官网（构建文件 index-4zBpLKmx.js） StepFun (阶跃星辰), stepfun.com · publication date unknown · Undated page, retrieved on 2026-10-29 (SHA-256 4a9822256a9c02a015133c2dbf8edd147c117d9c13e633cdd6c50258ae484ae5) directly from the publisher. Version: index-4zBpLKmx.js. The stepfun.com pages are served as an empty JavaScript shell; their text (newsroom posts with their dates, and the footer) is carried in this content-hashed build file, read as it stood on 29 October 2026. The file name changes with each site build; earlier builds not inspected. Its wording can change; earlier wording is not authenticated. English title (machine translation): “StepFun website build file carrying the newsroom posts and site footer”. · In Simplified Chinese (zh-Hans)
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Issue and authorship records
- Issued by: StepFun / 阶跃星辰StepFun's newsroom post dated 20 September 2026 announced Step 5 Preview as its new flagship model, said it was available in full from that day, and said the model weights would be released on 15 October.2026-09-20 · announcement · Stated in source · Supported Inspect claim & evidence ↗StepFun / 阶跃星辰: institution →
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