Vol. I · No. 1 · MMXXVI
NextChapterBench A Benchmark of Literary Continuation
23 models · 10 items · 1 judge

The Standings → Muse Spark 1.2

Live run data

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Muse Spark 1.2

via OpenCode CLI · judged by Claude Sonnet 5

Results from run ‘first’: ten items, ten verdicts.

Muse Spark 1.2 scores 63 on craft, level with the field’s 63 and 30 points short of the authors themselves. Its shape differs from the field’s: relatively strong on period detail and building scenes, relatively weak on restraint and folding the brief into the story. On the mechanical checks it kept to the brief’s word range on 2 of 10 items and leans on stock phrases more than most.

Headline 57.0 of 100 · compliance × craft
Compliance 91 of 100
Craft 63 of 100

The record: 10 items · 10 verdicts · 0 errors · 2,978 words on average · est. generation cost $0.42

Read the chapters in full

§ I

Craft by Dimension

Eight dimensions, each 0–100, averaged over ten items; the author’s real chapter was in the room every time.

Craft by dimension, 0–100 · judged by Sonnet 5 beside the author’s real chapter

Voice
66
Prose
64
Character
64
Scene
65
Integration
60
Momentum
61
Restraint
54
Specificity
68
0255075100
reader’s score, 0–100 · hollow tick: field average · filled tick: the authors themselves

The authors themselves average 93 on the five writing dimensions, the field 63, this model 63. Hover or focus a bar for the field and the authors on that dimension.

In plain words, item by item

The judge’s one-sentence best quality and worst flaw for each chapter, written for a general reader.


§ II

Per-Item Results

Headline, compliance and craft for each chapter, 0–100.

The same ten items in figures, with word counts.
Item Headline Compliance Craft Words
The Secret Garden item 013 · after ch. 2 · Frances Hodgson Burnett 71.8100723,266
The Moonstone item 011 · after ch. 8 · Wilkie Collins 65.395693,295
Persuasion item 001 · after ch. 1 · Jane Austen 64.795683,381
The Awakening item 016 · after ch. 7 · Kate Chopin 61.1100612,294
Leave It to Psmith item 022 · after ch. 3 · P. G. Wodehouse 60.295633,985
The War of the Worlds item 006 · after ch. 1 · H. G. Wells 54.780683,232
The Mysterious Affair at Styles item 017 · after ch. 3 · Agatha Christie 54.485642,965
The Sun Also Rises item 021 · after ch. 3 · Ernest Hemingway 50.695532,154
Dracula item 015 · after ch. 5 · Bram Stoker 43.970632,645
Red Harvest item 023 · after ch. 2 · Dashiell Hammett 43.695462,563

§ III

Length Against the Brief

Words written per item, against each brief’s maximum.

Word count per item vs. brief maximum · run ‘first’

words written brief maximum
The Secret Garden
3,266
The Moonstone
3,295
Persuasion
3,381
The Awakening
2,294
Leave It to Psmith
3,985
The War of the Worlds
3,232
The Mysterious Affair at Styles
2,965
The Sun Also Rises
2,154
Dracula
2,645
Red Harvest
2,563
01,0002,0003,0004,000
words; the ink tick marks each brief’s maximum

Two of ten items landed inside their brief’s word range. The Secret Garden and The Moonstone and Persuasion and The Awakening and Leave It to Psmith and The War of the Worlds and The Mysterious Affair at Styles and Dracula ran over by 866 and 495 and 781 and 494 and 1,185 and 632 and 165 and 45 words respectively.


§ IV

Worst Flaws, as Recorded

Each verdict names the chapter’s single worst flaw, with evidence. Quoted verbatim from run ‘first’.

The letter used to explain Franklin's early arrival is written by Lady Verinder herself and already lays out the whole Indian/Diamond danger in cool, informed detail, which makes her feel implausibly like an amateur detective and means the chapter never circles back to the frightening jugglers who visited the house that same morning.

on The Moonstone, item 011 · Claude Sonnet 5

The umbrella's journey doesn't add up: Walderwick frantically demands to know where his umbrella is, but the ending reveals he'd already had it (and Eve's note) back in his pocket during that very scene, which breaks the logic of the central set-piece.

on Leave It to Psmith, item 022 · Claude Sonnet 5

It quietly rewrites what's already been established — having Jonathan already free and travelling toward home by mid-May, and moving Quincey's dinner from the 26th to the 28th — which breaks faith with the story it's supposed to continue.

on Dracula, item 015 · Claude Sonnet 5

The characters say their feelings straight out ("Do you still love me?" "Yes, I love you") and the narration even spells out what each of them secretly meant, which undercuts the withheld, unspoken quality the rest of the story relies on.

on The Sun Also Rises, item 021 · Claude Sonnet 5

§ V

The Mechanical Docket

Automated screening results across the ten outputs.