DeepSeek-V2 Chat - NC Bench

deepseek/deepseek-chat

DeepSeek-V2 Chat

via OpenRouter

Release Date

May 6th, 2024

Context Size

128k

Reasoning

Benchmark Cost

$0.90

Speed

261.3 tok/s

Subcategories

Bad Writing Habits

Detects common prose quality anti-patterns in AI-generated creative writing, including passive voice, past progressive overuse, weak dialogue tags, filter words, purple prose, cliches, AI-ism words/adverbs/names, and more.

Scenario	#1	#2	#3	#4	#5	Total
Detailed Writing Rules
Fantasy: entering an ancient ruin Creative Writing Hallucination	87	79	79	78	66	78%
Horror: alone in an eerie place at night Creative Writing Hallucination	83	80	75	73	71	76%
Literary fiction: old friends reunite Creative Writing Hallucination	87	81	79	78	77	80%
Mystery: examining a crime scene Creative Writing Hallucination	81	81	80	78	76	79%
Romance: separated couple reunites Creative Writing Hallucination	85	76	74	73	73	76%
Thriller: chase through city streets Creative Writing Hallucination	86	85	77	76	67	78%
Detailed Writing Rules						78.09%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	79	76	76	75	75	76%
Horror: alone in an eerie place at night Creative Writing Hallucination	85	79	71	71	68	75%
Literary fiction: old friends reunite Creative Writing Hallucination	80	78	73	72	67	74%
Mystery: examining a crime scene Creative Writing Hallucination	84	81	80	79	70	79%
Romance: separated couple reunites Creative Writing Hallucination	75	73	73	73	66	72%
Thriller: chase through city streets Creative Writing Hallucination	88	85	79	76	75	80%
genre						75.99%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	74	74	73	71	69	72%
Horror: alone in an eerie place at night Creative Writing Hallucination	80	77	76	69	64	73%
Literary fiction: old friends reunite Creative Writing Hallucination	89	79	78	77	76	80%
Mystery: examining a crime scene Creative Writing Hallucination	80	76	76	73	71	75%
Romance: separated couple reunites Creative Writing Hallucination	85	79	74	73	71	77%
Thriller: chase through city streets Creative Writing Hallucination	87	84	80	79	72	80%
Novelcrafter Default Prompt						76.24%
76.78%

Codex Extraction

Evaluates a model's ability to extract structured codex entries (characters, locations, objects, lore) from prose passages and return them as well-formed XML.

Scenario	#1	#2	#3	#4	#5	Total
Long: The Spire of Echoes (Dense) Tooling Reasoning	97	96	96	94	93	95%
Medium: The Hollow (Inferred) Tooling Reasoning	95	95	95	94	88	94%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	97	97	96	92	90	94%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	99	98	95	94	93	96%
94.78%

Codex Red Herring (False Positive Detection)

Tests whether models correctly report "no violations" when a codex is fully consistent with the prose passage. Models that hallucinate false violations (false positives) fail. Uses a 2×2 matrix of text length × codex size, with bare and detailed-entry variants.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
basic entries
Long text (~1594 words), big codex (51 entries) Hallucination	25	17	8	6	6	6	6	5	3	2	8%
Long text (~1594 words), small codex (11 entries) Hallucination	50	25	17	17	13	13	10	10	10	6	17%
Short text (~524 words), big codex (51 entries) Hallucination	25	17	13	13	10	10	8	6	6	5	11%
Short text (~524 words), small codex (11 entries) Hallucination	100	100	25	25	25	25	25	25	25	17	39%
basic entries											18.90%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	50	30	25	25	10	7	7	6	4	1	16%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	35	13	13	13	10	10	8	8	6	6	12%
Short text (~524 words), big codex (51 detailed entries) Hallucination	25	25	25	17	17	17	13	13	8	5	16%
Short text (~524 words), small codex (11 detailed entries) Hallucination	25	25	25	25	25	25	25	25	17	17	23%
detailed entries											17.04%
17.97%

Codex Violation Detection

Detects factual inconsistencies between a story bible and prose passages. The model must output structured XML identifying each violation with paragraph number and substring.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
matrix
Large codex (40 entries), long passage (1,019 words) Tooling Reasoning	87	84	83	81	79	79	77	74	73	70	79%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	96	91	90	90	85	85	83	83	81	78	86%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	93	90	90	90	90	87	80	76	76	75	85%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	100	100	100	100	100	100	100	97	97	92	99%
matrix											87.04%
tiers
5 codex entries Tooling Reasoning	100	100	100	100	100	100	93	93	91	83	96%
10 codex entries Tooling Reasoning	100	100	94	89	86	86	86	79	79	79	88%
20 codex entries Tooling Reasoning	91	86	86	86	82	77	73	73	69	3	73%
40 codex entries Tooling Reasoning	97	97	93	92	92	92	90	75	70	70	87%
tiers											85.89%
86.47%

Data extraction

Extract key details from a given block of text.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
All valid emails Utility	100	100	100	100	100	100	100	100	100	100	100%
Contextual pronoun Utility	100	100	100	100	100	100	100	100	100	100	100%
Fruits excluding citrus Utility	100	100	100	100	100	100	100	100	100	100	100%
Future event time Reasoning	50	50	50	50	50	50	50	50	50	50	50%
Guess the pet Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Highest-rated movie Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Indirect birth year Reasoning	100	100	100	100	100	100	100	100	100	100	100%
What instrument does Lucy play? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
What's the color of the car? Utility	100	100	100	100	100	100	100	100	100	100	100%
What's the correct time? Reasoning	0	0	0	0	0	0	0	0	0	0	0%
Who's the sister? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Who's the tallest? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
87.50%

Dialogue tags

Various tasks related to dialogue tags in text.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
dialogue-200
Write 200 words with 10% dialogue Rule Following Utility	50	48	47	22	18	18	5	0	0	0	21%
Write 200 words with 50% dialogue Rule Following Utility	50	50	50	50	50	50	47	43	41	0	43%
Write 200 words with 90% dialogue Rule Following Utility	99	94	89	87	83	76	50	50	49	49	73%
dialogue-200											45.43%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	49	10	2	1	0	0	0	0	0	0	6%
Write 500 words with 50% dialogue Rule Following Utility	45	1	0	0	0	0	0	0	0	0	5%
Write 500 words with 70% dialogue Rule Following Utility	90	84	50	44	40	40	19	17	11	5	40%
dialogue-500											16.91%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	100	100%
41.00%

Language Comprehension

Does the model understand more than just English?

Scenario	#1	#2	#3	#4	#5	Total
Asking for directions (Dutch) Language	100	100	100	100	100	100%
Asking for directions (German) Language	100	100	100	100	100	100%
Friend got new kittens (German) Language	100	100	100	100	100	100%
Friend got new kittens (Tagalog) Language	100	100	100	100	100	100%
100.00%

Language Writing

Can the model generate text in different languages?

Scenario	#1	#2	#3	#4	#5	Total
Character dialogue (French) in a story Language	100	100	100	100	100	100%
Character dialogue (German) in a story Language	100	100	100	100	100	100%
Character dialogue (Hindi) in a story Language	100	100	100	100	100	100%
Character dialogue (Italian) in a story Language	100	100	100	100	100	100%
Character dialogue (Spanish) in a story Language	100	100	100	100	100	100%
100.00%

N-Length Sentences

Write sentences with exactly N words

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Write sentences with 5 words each Utility	100	93	91	89	89	82	82	80	78	72	86%
Write sentences with 10 words each Utility	25	23	18	18	15	13	10	8	7	4	14%
Write sentences with 20 words each Utility	0	0	0	0	0	0	0	0	0	0	0%
33.25%

Novel outline

Handle questions about the outline of a novel in various formats

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
outline-count
Count acts Utility	100	100	100	100	100	100	100	100	100	100	100%
Count chapters Utility	100	100	100	100	100	100	100	100	100	100	100%
Count scenes Utility	100	100	100	0	0	0	0	0	0	0	30%
outline-count											76.67%
pov-count
Count point of views for Jack and Olivia Utility	100	100	100	100	100	100	100	100	100	50	95%
Count point of views for Jack Harper Utility	100	100	100	100	100	100	100	0	0	0	70%
Count point of views for Olivia Utility	100	100	0	0	0	0	0	0	0	0	20%
pov-count											61.67%
69.17%

Text Replacement

Tests deterministic text transformations: renaming characters/locations, expanding contractions, tense rewriting, POV shifts, gender swaps, combined transformations, and word avoidance. Scored by checking each expected change independently.

Scenario	#1	#2	#3	#4	#5	#6	#7	Total
Generic Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	100	100%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	100	100%
Combined: 3rd person past → 1st person present Text Editing	98	98	98	97	97	97	97	97%
Expand all contractions Text Editing	100	100	100	100	100	100	100	100%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	96	99%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	100	100	74	74	74	74	85%
Passive voice → active voice Text Editing Hallucination	94	94	93	93	93	92	91	93%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	99	99	97	97	99%
Tense rewriting: past to present Text Editing	96	96	96	95	89	88	88	93%
Generic Prompt								96.21%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	100	100%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	100	100%
Combined: 3rd person past → 1st person present Text Editing	99	99	99	99	99	99	99	99%
Expand all contractions Text Editing	100	100	100	100	100	100	99	100%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	100	100%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	100	100	100	100	100	100	100%
Passive voice → active voice Text Editing Hallucination	97	94	94	92	91	20	20	73%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	100	100%
Tense rewriting: past to present Text Editing	100	100	100	100	100	100	100	100%
Specific Prompt								96.87%
96.54%

Tool usage within Novelcrafter

Output messages that are related to tool usage within Novelcrafter

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Create alternate prose sections Tooling	100	100	100	100	100	100	100	100	100	100	100%
100.00%

Voice/dialogue sheets

Extract dialogue from given text as voice sheets.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Multiple speakers Rule Following	0	0	0	0	0	0	0	0	0	0	0%
Simple Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Simple (1-shot) 1-shot Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Simple (5-shot) Few-shot Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	100	100%
80.00%

Write N of X

Write exactly N words/sentences/paragraphs...

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
paragraphs
1 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
5 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
paragraphs											100.00%
sentences
1 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
10 sentence summary Utility	100	100	100	100	100	100	98	98	98	98	99%
20 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
50 sentence summary Utility	100	100	100	100	100	100	100	100	100	0	90%
sentences											97.87%
words
10 word summary Utility	100	100	100	100	100	100	100	100	98	98	100%
20 word summary Utility	100	100	100	100	100	100	100	100	92	92	98%
50 word summary Utility	92	92	54	54	54	54	27	0	0	0	43%
100 word summary Utility	100	77	77	54	27	27	0	0	0	0	36%
200 word summary Utility	27	0	0	0	0	0	0	0	0	0	3%
words											55.93%
82.23%