Fiction Eval leaderboard · comparison
Claude Opus 4.8 vs DeepSeek V3.2 for fiction writing
Judged blind on fresh genre scenes (LitRPG, cozy mystery, romance, thriller,
xianxia…), July 2026 — three tries per model per scene, passages shown in both orders so
position can't sway it, graded by a third AI that isn't either of them.
Head-to-head
Claude Opus 4.8 won the direct matchup 30–0 (with 0 ties) across every prompt and sample.
| # | Model | Score | Record | Slop |
|---|
| 1 | Claude Opus 4.8 | 1927 (likely 1888–1976) | 150–14–43 | 14.88 |
| 6 | DeepSeek V3.2 | 1251 (likely 1201–1302) | 52–144–11 | 23.24 |
The score is each model's overall strength across the whole 8-model field
(like a chess rating); the range next to it is where the true score most likely sits. Slop is
a separate count of AI tells (lower is cleaner) — it isn't part of the ranking.
The same scene, both models
LitRPG — opening of the "dungeon-core scene" scene. Full passages for all models are on the board.
Claude Opus 4.8:
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 …
DeepSeek V3.2:
Rain seeped through the ancient soil, a constant, dripping pressure against its awareness. The core was a point of warmth and purpose in the dark, a consciousness three days old, defined by a single, driving urge: *harden*. It had spent those days pulling minute specks of mana from the stone, weaving them into a lattice of will along one corridor, five paces long. **Corridor Section Hardened.** **Mana: 0/10.** **Passive Mana Regeneration: 0.1 per hour.** The data was not read, but *felt*, a cold certainty in its being. The core rested, a faint blue gemstone buried in a niche, savoring the solidity of its work. The rain-drip was the only sound, the only change. Then, a new pressure. A weight upon the hardened earth of its entrance. A breach. A living heat, flickering and weak, entered its domain. The core’s awareness snapped to it, a lens focusing. It was small, bipedal, and wretched. Green skin was plastered with mud and rainwater. It shivered violently, ribs showing under a ratty pelt. It …
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Claude Opus 4.8 full review ·
DeepSeek V3.2 full review ·
the July 2026 report ·
all comparisons