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stepfun-ai
SteptronOss
Python2026–2026
stepfun-ai / SteptronOss

SteptronOss

A lightweight, AI-native training framework for large language models. Designed for fast iteration, reproducible experiments, and modular configuration across SFT, RLVR, and evaluation workflows.

AI & Machine LearningAutomation & Workflows
Explore on GitHubRead Hacker News discussions
2Distinct people
2Mentions
0Explicit recommenders
589GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A lightweight, AI-native training framework for large language models. Designed for fast iteration, reproducible experiments, and modular configuration across SFT, RLVR, and evaluation workflows.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by day2 dated mentions

Observed mentions: 2026-03-03 12:30:21 UTC to 2026-04-01 17:09:28 UTC.

012026-03-03 00:00:00 UTC to 2026-03-04 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsMar 32026-03-04 00:00:00 UTC to 2026-03-05 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-05 00:00:00 UTC to 2026-03-06 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-06 00:00:00 UTC to 2026-03-07 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-07 00:00:00 UTC to 2026-03-08 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-08 00:00:00 UTC to 2026-03-09 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-09 00:00:00 UTC to 2026-03-10 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-10 00:00:00 UTC to 2026-03-11 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-11 00:00:00 UTC to 2026-03-12 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-12 00:00:00 UTC to 2026-03-13 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-13 00:00:00 UTC to 2026-03-14 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-14 00:00:00 UTC to 2026-03-15 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-15 00:00:00 UTC to 2026-03-16 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-16 00:00:00 UTC to 2026-03-17 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-17 00:00:00 UTC to 2026-03-18 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsMar 172026-03-18 00:00:00 UTC to 2026-03-19 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-19 00:00:00 UTC to 2026-03-20 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-20 00:00:00 UTC to 2026-03-21 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-21 00:00:00 UTC to 2026-03-22 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-22 00:00:00 UTC to 2026-03-23 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-23 00:00:00 UTC to 2026-03-24 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-24 00:00:00 UTC to 2026-03-25 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-25 00:00:00 UTC to 2026-03-26 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-26 00:00:00 UTC to 2026-03-27 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-27 00:00:00 UTC to 2026-03-28 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-28 00:00:00 UTC to 2026-03-29 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-29 00:00:00 UTC to 2026-03-30 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-30 00:00:00 UTC to 2026-03-31 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-31 00:00:00 UTC to 2026-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-04-01 00:00:00 UTC to 2026-04-02 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsApr 1

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Mar 32026-03-03 00:00:00 UTC2026-03-04 00:00:00 UTC110
Mar 42026-03-04 00:00:00 UTC2026-03-05 00:00:00 UTC000
Mar 52026-03-05 00:00:00 UTC2026-03-06 00:00:00 UTC000
Mar 62026-03-06 00:00:00 UTC2026-03-07 00:00:00 UTC000
Mar 72026-03-07 00:00:00 UTC2026-03-08 00:00:00 UTC000
Mar 82026-03-08 00:00:00 UTC2026-03-09 00:00:00 UTC000
Mar 92026-03-09 00:00:00 UTC2026-03-10 00:00:00 UTC000
Mar 102026-03-10 00:00:00 UTC2026-03-11 00:00:00 UTC000
Mar 112026-03-11 00:00:00 UTC2026-03-12 00:00:00 UTC000
Mar 122026-03-12 00:00:00 UTC2026-03-13 00:00:00 UTC000
Mar 132026-03-13 00:00:00 UTC2026-03-14 00:00:00 UTC000
Mar 142026-03-14 00:00:00 UTC2026-03-15 00:00:00 UTC000
Mar 152026-03-15 00:00:00 UTC2026-03-16 00:00:00 UTC000
Mar 162026-03-16 00:00:00 UTC2026-03-17 00:00:00 UTC000
Mar 172026-03-17 00:00:00 UTC2026-03-18 00:00:00 UTC000
Mar 182026-03-18 00:00:00 UTC2026-03-19 00:00:00 UTC000
Mar 192026-03-19 00:00:00 UTC2026-03-20 00:00:00 UTC000
Mar 202026-03-20 00:00:00 UTC2026-03-21 00:00:00 UTC000
Mar 212026-03-21 00:00:00 UTC2026-03-22 00:00:00 UTC000
Mar 222026-03-22 00:00:00 UTC2026-03-23 00:00:00 UTC000
Mar 232026-03-23 00:00:00 UTC2026-03-24 00:00:00 UTC000
Mar 242026-03-24 00:00:00 UTC2026-03-25 00:00:00 UTC000
Mar 252026-03-25 00:00:00 UTC2026-03-26 00:00:00 UTC000
Mar 262026-03-26 00:00:00 UTC2026-03-27 00:00:00 UTC000
Mar 272026-03-27 00:00:00 UTC2026-03-28 00:00:00 UTC000
Mar 282026-03-28 00:00:00 UTC2026-03-29 00:00:00 UTC000
Mar 292026-03-29 00:00:00 UTC2026-03-30 00:00:00 UTC000
Mar 302026-03-30 00:00:00 UTC2026-03-31 00:00:00 UTC000
Mar 312026-03-31 00:00:00 UTC2026-04-01 00:00:00 UTC000
Apr 12026-04-01 00:00:00 UTC2026-04-02 00:00:00 UTC101

What Hacker News says

2 sources
tarruda·Apr 1, 2026
Since that discussion, they released the base model and a midtrain checkpoint: - https://huggingface.co/stepfun-ai/Step-3.5-Flash-Base - https://huggingface.co/stepfun-ai/Step-3.5-Flash-Base-Midtra... I'm not aware of other AI labs that released base checkpoint for models in this size class. Qwen released some base models for 3.5, but the biggest one is the 35B checkpoint. They also released the entire training pipeline: - https://huggingface.co/datasets/stepfun-ai/Step-3.5-Flash-SF... - https://github.com/stepfun-ai/SteptronOss
In StepFun 3.5 Flash is #1 cost-effective model for OpenClaw tasks (300 battles)

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