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simplescaling
s1
Python2025–2025
simplescaling / s1

s1

s1: Simple test-time scaling

3Distinct people
3Mentions
0Explicit recommenders
6.7KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

s1: Simple test-time scaling

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, 1:49:46 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 3-hour interval3 dated mentions

Observed mentions: 2025-02-03 17:56:11 UTC to 2025-02-06 12:28:00 UTC.

012025-02-03 15:00:00 UTC to 2025-02-03 18:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsFeb 3, 15:002025-02-03 18:00:00 UTC to 2025-02-03 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-03 21:00:00 UTC to 2025-02-04 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 00:00:00 UTC to 2025-02-04 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 03:00:00 UTC to 2025-02-04 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 06:00:00 UTC to 2025-02-04 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 09:00:00 UTC to 2025-02-04 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 12:00:00 UTC to 2025-02-04 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 15:00:00 UTC to 2025-02-04 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 18:00:00 UTC to 2025-02-04 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-04 21:00:00 UTC to 2025-02-05 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 00:00:00 UTC to 2025-02-05 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsFeb 5, 00:002025-02-05 03:00:00 UTC to 2025-02-05 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 06:00:00 UTC to 2025-02-05 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 09:00:00 UTC to 2025-02-05 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 12:00:00 UTC to 2025-02-05 15:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025-02-05 15:00:00 UTC to 2025-02-05 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 18:00:00 UTC to 2025-02-05 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-05 21:00:00 UTC to 2025-02-06 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-06 00:00:00 UTC to 2025-02-06 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-06 03:00:00 UTC to 2025-02-06 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-06 06:00:00 UTC to 2025-02-06 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-06 09:00:00 UTC to 2025-02-06 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-02-06 12:00:00 UTC to 2025-02-06 15:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsFeb 6, 12:00

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
Feb 3, 15:002025-02-03 15:00:00 UTC2025-02-03 18:00:00 UTC110
Feb 3, 18:002025-02-03 18:00:00 UTC2025-02-03 21:00:00 UTC000
Feb 3, 21:002025-02-03 21:00:00 UTC2025-02-04 00:00:00 UTC000
Feb 4, 00:002025-02-04 00:00:00 UTC2025-02-04 03:00:00 UTC000
Feb 4, 03:002025-02-04 03:00:00 UTC2025-02-04 06:00:00 UTC000
Feb 4, 06:002025-02-04 06:00:00 UTC2025-02-04 09:00:00 UTC000
Feb 4, 09:002025-02-04 09:00:00 UTC2025-02-04 12:00:00 UTC000
Feb 4, 12:002025-02-04 12:00:00 UTC2025-02-04 15:00:00 UTC000
Feb 4, 15:002025-02-04 15:00:00 UTC2025-02-04 18:00:00 UTC000
Feb 4, 18:002025-02-04 18:00:00 UTC2025-02-04 21:00:00 UTC000
Feb 4, 21:002025-02-04 21:00:00 UTC2025-02-05 00:00:00 UTC000
Feb 5, 00:002025-02-05 00:00:00 UTC2025-02-05 03:00:00 UTC000
Feb 5, 03:002025-02-05 03:00:00 UTC2025-02-05 06:00:00 UTC000
Feb 5, 06:002025-02-05 06:00:00 UTC2025-02-05 09:00:00 UTC000
Feb 5, 09:002025-02-05 09:00:00 UTC2025-02-05 12:00:00 UTC000
Feb 5, 12:002025-02-05 12:00:00 UTC2025-02-05 15:00:00 UTC101
Feb 5, 15:002025-02-05 15:00:00 UTC2025-02-05 18:00:00 UTC000
Feb 5, 18:002025-02-05 18:00:00 UTC2025-02-05 21:00:00 UTC000
Feb 5, 21:002025-02-05 21:00:00 UTC2025-02-06 00:00:00 UTC000
Feb 6, 00:002025-02-06 00:00:00 UTC2025-02-06 03:00:00 UTC000
Feb 6, 03:002025-02-06 03:00:00 UTC2025-02-06 06:00:00 UTC000
Feb 6, 06:002025-02-06 06:00:00 UTC2025-02-06 09:00:00 UTC000
Feb 6, 09:002025-02-06 09:00:00 UTC2025-02-06 12:00:00 UTC000
Feb 6, 12:002025-02-06 12:00:00 UTC2025-02-06 15:00:00 UTC101

What Hacker News says

3 sources
Agreed. Here are three things that I find surreal about the s1 paper. (1) The abstract changed how I thought about this domain (advanced reasoning models). The only other paper that did that for me was the "Memory Resource Management in VMware ESX Server". And that paper got published 23 years ago. (2) The model, data, and code are open source at https://github.com/simplescaling/s1. With this, you can start training your own advanced reasoning models. All you need is a thousand well-curated questions with reasoning steps. (3) More than half the references in the paper are from 2024 and Jan 2025. Just look at the paper's first page. https://arxiv.org/pdf/2501.19393 In which other field do you see this?
In S1: A $6 R1 competitor?

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