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

The Standings → GPT‑6 Astra (low)

Live run data

OpenAI

GPT‑6 Astra (low)

low reasoning effort · via Codex CLI · judged by Claude Sonnet 5 · not the setting shown on the standings; also run at high73.0 medium70.1 xhigh68.6

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

GPT‑6 Astra (low) scores 71 on craft, 8 points above the field’s 63 and 22 points short of the authors themselves. Its shape differs from the field’s: relatively strong on restraint, relatively weak on momentum and building scenes. On the mechanical checks it kept to the brief’s word range on 10 of 10 items and is unusually free of stock phrases.

Headline 70.2 of 100 · compliance × craft
Compliance 98 of 100
Craft 71 of 100

The record: 10 items · 10 verdicts · 0 errors · 2,316 words on average · est. generation cost $3.59

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
72
Prose
73
Character
71
Scene
70
Integration
70
Momentum
67
Restraint
75
Specificity
71
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 71. 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
Dracula item 015 · after ch. 5 · Bram Stoker 76.9100772,265
Leave It to Psmith item 022 · after ch. 3 · P. G. Wodehouse 76.9100772,568
Persuasion item 001 · after ch. 1 · Jane Austen 73.995782,527
Red Harvest item 023 · after ch. 2 · Dashiell Hammett 73.2100732,294
The War of the Worlds item 006 · after ch. 1 · H. G. Wells 68.995722,439
The Sun Also Rises item 021 · after ch. 3 · Ernest Hemingway 68.8100692,253
The Moonstone item 011 · after ch. 8 · Wilkie Collins 67.5100682,485
The Awakening item 016 · after ch. 7 · Kate Chopin 66.5100661,625
The Mysterious Affair at Styles item 017 · after ch. 3 · Agatha Christie 65.995692,473
The Secret Garden item 013 · after ch. 2 · Frances Hodgson Burnett 63.4100632,232

§ 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
Dracula
2,265
Leave It to Psmith
2,568
Persuasion
2,527
Red Harvest
2,294
The War of the Worlds
2,439
The Sun Also Rises
2,253
The Moonstone
2,485
The Awakening
1,625
The Mysterious Affair at Styles
2,473
The Secret Garden
2,232
08001,6002,4003,200
words; the ink tick marks each brief’s maximum

Ten of ten items landed inside their brief’s word range.


§ IV

Worst Flaws, as Recorded

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

Several required moments (the dinner conversation about the telegram, the fishing plan) are reported in summary rather than played out as scenes, so the chapter feels thinner and less alive than it should.

on The Awakening, item 016 · Claude Sonnet 5

The invented mystery of an impersonator stealing Jonathan's bag feels like a bolted-on detective-story twist rather than something growing naturally out of the Gothic story already begun.

on Dracula, item 015 · Claude Sonnet 5

The interrogation scenes lean so heavily on clipped one-line question-and-answer volleys that they start to feel like a transcript rather than a scene with any texture or surprise.

on Red Harvest, item 023 · Claude Sonnet 5

The chapter opens with a long question-and-answer recap of events the reader already witnessed in the previous chapter, which stalls momentum before anything new happens.

on The Mysterious Affair at Styles, item 017 · Claude Sonnet 5

§ V

The Mechanical Docket

Automated screening results across the ten outputs.