📊 Industry-Leading Metrics

Performance Analytics

The world's most advanced end-to-end book generation platform. Quantifiable results that demonstrate industry-leading performance across all key publishing metrics.

Headline Performance

Industry-leading results validated by professional readers and rigorous testing.

4.7/5

Narrative Coherence

99.6%

Detail Recall

68%

Less Editing Effort

81%

Blind Test Completion

93.8%

Style Match

Business Impact

These metrics translate directly into measurable business outcomes and superior reader experiences.

More Compelling Books

Tighter narrative arcs, consistent character development, and satisfying story payoffs that keep readers engaged from beginning to end.

More Credible Non-Fiction

Verifiable sources, reduced hallucinations, and factual accuracy that meets professional publishing standards.

Faster to Market

Reduced rewriting requirements, lower production costs, and higher reader satisfaction scores across all genres.

Penwise vs. General LLMs

Coherence Improvement +0.8 points
Required Rewrites -29%
Cost per Book -66%
Blind Test Completion +34 points
Factual Hallucinations 3x fewer

Technical Architecture

Proprietary technologies specifically engineered for professional book creation

Longform Planner

Plans narrative arcs → chapters → scenes and locks them in for consistent story structure throughout the entire manuscript.

Continuity Memory

Entity graphs, timelines, and character sheets that maintain consistency across extensive narratives without degradation.

Style Lock

Learns and preserves your unique voice, tone, and rhythm throughout the entire book generation process.

Bibliography Guard

Automatic citations with source alignment checks for non-fiction accuracy and credibility verification.

Scene Rewriter

Targets weak passages for improvement without breaking narrative continuity or character consistency.

12M Tokens
Context Length

Case Studies

Real-world results across different genres and project scopes

Thriller

92,000 Words

Fiction
71%
Editing Time Reduction
4.8/5
Reader Score
97%
Outline Adherence

Business Guide

58,000 Words

Non-Fiction
0.9
Hallucinations / 5k Sentences
98%
Verifiable Citations
10 Days
Time to Publication

Epic Fantasy

110,000 Words

Fiction
94/100
Character-Arc Consistency
3x Fewer
Repetition Reduction
96%
World-Building Coherence

Research Methodology

Transparent and rigorous testing methodology ensuring reliable, reproducible results.

  • 1 128 book projects across 8 genres with 40k/60k/90k-word targets
  • 2 Standardized briefs and outlines; identical research packs for non-fiction
  • 3 Triple runs per project with different seeds; 95% confidence aggregation
  • 4 62 professional evaluators in double-blind reviews; inter-rater reliability kappa 0.81

Technical Foundation

Powered by Penwise Atlas v3 — our in-house long-form generation model designed exclusively for book-length narratives.

Ultra-Long Context Up to 1M token context window
Narrative Memory Advanced entity tracking & mapping
Editorial Optimization Fine-tuned on long-form editorial data

Frequently Asked Questions

Technical and performance inquiries

Track Your Writing Progress

Use detailed analytics to measure your growth