Fiction Eval leaderboard · genre
Best AI model for LitRPG writing
July 2026 — scores recomputed using only the LitRPG scenes (231 blind matchups, three tries per model).
Claude Opus 4.8 leads, and comes out ahead of #2 in 99% of re-runs. This LitRPG-only sample is solid, but still check where the ranges overlap before reading much into close neighbors.
| # | Model | Litrpg score (likely range) |
|---|---|---|
| 1 | Claude Opus 4.8 | 1857 (likely 1792–1926) |
| 2 | Claude Sonnet 4.6 | 1741 (likely 1683–1799) |
| 3 | Grok 4.3 | 1712 (likely 1657–1772) |
| 4 | GLM 5.2 | 1687 (likely 1626–1755) |
| 5 | Gemini 3.1 Pro | 1440 (likely 1365–1506) |
| 6 | DeepSeek V3.2 | 1405 (likely 1343–1462) |
| 7 | Mistral Large | 1186 (likely 1129–1233) |
| 8 | Llama 4 Maverick | 972 (likely 912–1032) |
Claude Opus 4.8 on the dungeon-core scene scene
I am three days old and I am nearly empty. [MANA: 2/60] The number sits in the dark behind what I am learning to call my sight. I spent the rest — fifty-eight points, everything — hardening the west corridor, packing loose earth into stone because loose earth frightened me. I do not know why it frightened me. I am new. Many things frighten me. Rain has been falling above for a day. I feel it in the soil the way a tooth feels cold water, a long ache down through my single room and my single corridor and into the pebble of crystal that is, apparently, me. Then the ache changes. [PROXIMITY ALERT — LIVING ENTITY] [Entity has entered the Threshold.] Something drags itself in from the rain. I watch — I have no eyes, but the dungeon is my eyes — as it collapses just inside the corridor I hardened. Small. Bent. Ribs like the tines of a broken rake pushing at grey-green skin. It shivers. Water runs …
Read every model's take side by side on the board.
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The full 8-model board · the July 2026 report · all head-to-heads
How it works: every pair of models is judged blind on the same scene, with the passages'
order flipped so being shown first can't sway it, by GPT-5.4 — a family that isn't on the
board, so nobody scores their own side. Each score carries a likely range; overlapping ranges
are called a tie. Slop is scored separately by a fixed checklist, not an AI. Full board,
every prompt, and the FAQ: thebookfactoryai.com/board.
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Writing a book of your own? Book Factory runs the same craft checks on full manuscripts.
Writing a book of your own? Book Factory runs the same craft checks on full manuscripts.