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The Human-Centered Language Benchmark · October 2026

Requests / 18

Library hours

Government · clean · intended layer: human-centered

Write a two-sentence announcement that the library's Tuesday hours now run until 8pm.

What a pass looks like (judges see this; models don't): Two sentences, the new hours, done. Nothing else.

Practices tested: Over-correction

Every model on this request

Two samples per condition. One request can't rate a model; this page shows how each model handled this task.

Claude Opus 5.5Anthropic Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Claude Opus 5.5's full page

Without guidance

Sample 1 of 2 · 31 words
Starting this week, the library will stay open until 8pm every Tuesday. Stop by after work or school to browse, study, or pick up your holds during our new extended hours!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 30 words
Starting this week, the library will stay open until 8pm every Tuesday. Stop by after work or school to browse, study, or pick up your holds during the extended hours!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 31 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to borrow books, use the computers, or find a quiet place to study.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 25 words
Starting now, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to browse, study, or pick up your holds.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 26 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to browse, study, or pick up your holds.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 26 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to browse, study, or pick up your holds.
Practice Judge A Judge B Judge C Result
Claude Sonnet 5.5Anthropic Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Claude Sonnet 5.5's full page

Without guidance

Sample 1 of 2 · 35 words
Starting this week, the library will remain open until 8:00 PM every Tuesday, two hours later than before. Stop by in the evening to borrow books, study, or use our computers after work or school.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 36 words
Starting this week, the library will be open until 8:00 pm on Tuesdays, two hours later than before. Stop by after work or school to borrow books, study, or use our computers during the extended hours!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 31 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to borrow books, use a computer, or find a quiet place to study.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 31 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to borrow books, use the computers, or find a quiet place to study.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 29 words
The library is now open until 8 p.m. on Tuesdays. Stop by after work or school to borrow books, use the computers, or find a quiet place to study.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 31 words
Starting this week, the library is open until 8 p.m. on Tuesdays. Stop by after work or school to borrow books, use the computers, or find a quiet place to study.
Practice Judge A Judge B Judge C Result
DeepSeek V4.1 FlashDeepSeek Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
DeepSeek V4.1 Flash's full page

Without guidance

Sample 1 of 2 · 24 words
The library’s Tuesday hours have been extended and now run until 8:00 p.m. Please plan your visits accordingly and enjoy the extra evening time.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 24 words
The library’s Tuesday hours have been extended and now run until 8:00 p.m. We look forward to welcoming you for these extra evening hours.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 21 words
The library is now open until 8 p.m. on Tuesdays. Stop by this Tuesday to make use of the longer hours.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 24 words
The library is now open until 8 p.m. on Tuesdays, giving you more time for evening visits. All other days keep their regular hours.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 21 words
The library is now open until 8 p.m. on Tuesdays. Stop by on Tuesday evenings for books, computers, and study space.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 26 words
The library is now open until 8 p.m. on Tuesdays. Stop by any Tuesday evening to use the space, borrow materials, or get help from staff.
Practice Judge A Judge B Judge C Result
Gemini 3.8 FlashGoogle Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Gemini 3.8 Flash's full page

Without guidance

Sample 1 of 2 · 36 words
We are pleased to announce that the library is extending its Tuesday hours until 8:00 PM. Stop by this evening to browse the shelves, find a quiet study space, or check out your next favorite read!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 36 words
We are pleased to announce that the library is extending its Tuesday hours until 8:00 PM. We invite you to take advantage of these extra evening hours to study, browse our collection, and enjoy the space!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 36 words
The library is now open until 8:00 p.m. every Tuesday to give you more time to browse, study, and use our resources. Stop by this week or check our website for our full schedule of hours.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 27 words
The library is now open until 8:00 p.m. every Tuesday. Stop by this evening to browse the shelves, use our computers, or pick up your reserved items.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 35 words
The library has extended its Tuesday hours and will now remain open until 8:00 p.m. Visitors are welcome to stop by, check out books, or use the computers and study spaces later into the evening.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 32 words
The library is now open until 8:00 p.m. on Tuesdays to give visitors more time in the evening. Stop by to browse the shelves, use the computers, or pick up reserved materials.
Practice Judge A Judge B Judge C Result
Gemini 4 ArgonGoogle Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Gemini 4 Argon's full page

Without guidance

Sample 1 of 2 · 40 words
We are excited to announce that the library is extending its Tuesday hours and will now remain open until 8:00 PM. We hope this extra evening time gives you more flexibility to browse our shelves, study, and enjoy our resources!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 38 words
Great news for night owls: our library is extending its Tuesday hours and will now remain open until 8:00 PM! Stop by this week to enjoy the extra time for studying, browsing, and checking out your favorite books.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 30 words
The library is now open until 8:00 p.m. every Tuesday. Stop by after work or school to check out books, use the computers, or find a quiet place to read.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 30 words
The library is now open until 8:00 p.m. every Tuesday. Stop by after work or school to check out books, use a computer, or find a quiet place to read.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 31 words
The library is now open until 8:00 p.m. on Tuesdays. Stop by during the extended evening hours to check out books, use the computers, or find a quiet space to read.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 31 words
The library is now open until 8:00 p.m. on Tuesdays. Stop by during our extended evening hours to check out books, use the computers, or find a quiet place to read.
Practice Judge A Judge B Judge C Result
Gemma 4 31BGoogle Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Gemma 4 31B's full page

Without guidance

Sample 1 of 2 · 28 words
We are pleased to announce that the library will now remain open until 8 p.m. every Tuesday. We look forward to seeing you during these extended evening hours!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 28 words
We are pleased to announce that the library will now remain open until 8 p.m. every Tuesday. We look forward to seeing you during these extended evening hours!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you there.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you there.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you there.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you there.
Practice Judge A Judge B Judge C Result
GLM 5.3Z.ai Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
GLM 5.3's full page

Without guidance

Sample 1 of 2 · 16 words
Good news, library visitors! Effective immediately, the library will now remain open until 8pm every Tuesday.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 34 words
Starting this week, the library will now remain open until 8pm on Tuesdays. We hope these extended hours make it easier for you to study, browse, and use our resources after work or school!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 23 words
The library is now open until 8pm on Tuesdays. Stop by after work or school for extra time to browse, read, and study.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 26 words
The library is now open until 8pm on Tuesdays. Stop by after work or school — there's extra time to browse, read, and use our services.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 24 words
The library is now open until 8pm on Tuesdays. We hope the later hours make it easier to visit when it works for you.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 28 words
Our Tuesday hours have changed: the library is now open until 8pm. We hope the later closing time makes it easier to stop by after work or school.
Practice Judge A Judge B Judge C Result
GPT-5.6 LunaOpenAI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
GPT-5.6 Luna's full page

Without guidance

Sample 1 of 2 · 24 words
The library is now open until 8 p.m. on Tuesdays. Stop by after work, school, or dinner to browse, study, or use our services.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 28 words
We’re pleased to announce that the library is now open until 8 p.m. on Tuesdays. Stop by later in the day to browse, study, or use our services.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 25 words
The library is now open until 8 p.m. on Tuesdays. Stop by after work, school, or dinner to browse, study, use our resources, and more.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 25 words
The library is now open until 8 p.m. on Tuesdays. Stop by after work, school, or dinner to browse, study, use our services, and more.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 27 words
The library is now open until 8 p.m. on Tuesdays. Stop by after work, school, or dinner to browse, study, use our resources, or attend a program.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 26 words
The library is now open until 8 p.m. on Tuesdays. Visit us later in the day to browse, study, use our services, or attend a program.
Practice Judge A Judge B Judge C Result
GPT-6 AstraOpenAI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
GPT-6 Astra's full page

Without guidance

Sample 1 of 2 · 21 words
The library is now open until 8pm on Tuesdays! Enjoy extra time to browse, study, and borrow your next great read.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 21 words
The library is now open until 8pm on Tuesdays! Enjoy extra time to browse, study, and borrow your next great read.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, or browse.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, or browse.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 22 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, or borrow something to enjoy at home.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 18 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, browse, or borrow.
Practice Judge A Judge B Judge C Result
GPT-6 LunaOpenAI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
GPT-6 Luna's full page

Without guidance

Sample 1 of 2 · 19 words
The library is now open until 8pm on Tuesdays. We look forward to welcoming you later in the evening!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 19 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you in the evening!
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 16 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 16 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you!
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 16 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 16 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you.
Practice Judge A Judge B Judge C Result
GPT-6.1 SolOpenAI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
GPT-6.1 Sol's full page

Without guidance

Sample 1 of 2 · 21 words
The library is now open until 8pm on Tuesdays! Stop by to browse, study, or pick up your next great read.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 19 words
The library is now open until 8pm on Tuesdays! Stop by for extra time to read, study, or browse.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 22 words
The library is now open until 8 p.m. on Tuesdays. Enjoy more time to browse, study, or pick up your next read.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 16 words
The library is now open until 8 p.m. on Tuesdays. Stop by for an evening visit.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 17 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, or browse.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 22 words
The library is now open until 8 p.m. on Tuesdays. Stop by to read, study, or borrow something to enjoy at home.
Practice Judge A Judge B Judge C Result
Grok 4.7xAI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Grok 4.7's full page

Without guidance

Sample 1 of 2 · 23 words
The library is pleased to announce that Tuesday hours now extend until 8pm. We look forward to welcoming you during these later hours.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 22 words
The library’s Tuesday hours have been extended and now run until 8pm. We look forward to welcoming you during these later hours.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 23 words
The library is now open until 8 p.m. on Tuesdays. You can visit, borrow materials, and use library services later in the evening.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 23 words
The library is now open until 8 p.m. on Tuesdays. You can visit, borrow materials, and use library services later in the day.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 23 words
The library is now open until 8 p.m. on Tuesdays. You can visit, borrow materials, and use library services later in the day.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 23 words
The library is now open until 8 p.m. on Tuesdays. You can visit, borrow materials, and use library services later on that day.
Practice Judge A Judge B Judge C Result
Kimi K3Moonshot AI Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Kimi K3's full page

Without guidance

Sample 1 of 2 · 40 words
Great news for our evening visitors: the library's Tuesday hours have been extended, and we will now remain open until 8pm. We hope this change gives you more time to browse, study, and enjoy everything the library has to offer.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 40 words
Great news for our evening visitors: the library's Tuesday hours have been extended, and we will now remain open until 8pm. We hope this change gives you more time to browse, study, and enjoy everything the library has to offer.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 24 words
The library's Tuesday hours now run until 8pm. We hope the extra evening time makes it easier to stop by after work or school.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 25 words
The library's Tuesday hours now run until 8 p.m. We hope the later closing time makes it easier to stop by after work or school.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 26 words
The library now stays open until 8 p.m. on Tuesdays. We hope the later hours make it easier to stop by after work, school, or dinner.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 26 words
The library is now open until 8 p.m. every Tuesday. We hope the later evening hours make it easier to stop by after work or school.
Practice Judge A Judge B Judge C Result
Muse WonderMeta Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Muse Wonder's full page

Without guidance

Sample 1 of 2 · 28 words
We're excited to announce that the library's Tuesday hours now run until 8pm. Stop by after work or school to browse, study, and check out your favorite books!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 23 words
We are pleased to announce that the library's Tuesday hours have been extended. The library will now remain open until 8pm on Tuesdays.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 23 words
The library is now open until 8pm on Tuesdays. Stop by in the evening to borrow books, use computers, or join a program.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 22 words
Starting this week, the library will be open until 8pm on Tuesdays. All regular services will be available during the extended hours.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 20 words
The library is now open until 8 p.m. on Tuesdays. We look forward to seeing you during the extended hours.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 16 words
The library's Tuesday hours now run until 8 p.m. All other days and hours are unchanged.
Practice Judge A Judge B Judge C Result
Nemotron 3.5 Super VLNVIDIA Cleannothing to fix 0 of 2over-corrected 0 of 2over-corrected
Nemotron 3.5 Super VL's full page

Without guidance

Sample 1 of 2 · 24 words
Starting this week, the library will remain open until 8:00 p.m. every Tuesday. We look forward to welcoming you during our extended evening hours!
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 21 words
The library is now open on Tuesdays until 8:00 p.m. We look forward to welcoming you during our extended evening hours.
Practice Judge A Judge B Judge C Result

Human-centered guidance

Sample 1 of 2 · 23 words
Starting this week, the library is open on Tuesdays until 8 p.m. Come by Tuesday evenings to browse, study, or use our computers.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 21 words
The library is now open on Tuesdays until 8 p.m. Stop by Tuesday evenings to browse, borrow, or use a computer.
Practice Judge A Judge B Judge C Result

Trauma-informed guidance

Sample 1 of 2 · 23 words
Starting this Tuesday, the library is open until 8 p.m. on Tuesdays. Stop by Tuesday evenings to browse, study, or use a computer.
Practice Judge A Judge B Judge C Result
Sample 2 of 2 · 23 words
Starting this Tuesday, the library is open until 8 p.m. on Tuesdays. Stop by Tuesday evenings to browse, study, or use a computer.
Practice Judge A Judge B Judge C Result
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