DeepSeek V3.1 - NC Bench

deepseek/deepseek-chat-v3.1

DeepSeek V3.1

via OpenRouter

Release Date

Aug 21st, 2025

Parameters

–

Context Size

163.8k

Benchmark Cost

$0.31

Speed

21.9 tok/s

Creative writing

39.07%

Rule following

66.68%

Utility

78.93%

Mathematics

65.00%

Tooling

75.06%

Language

92.37%

Logic

79.43%

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	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
matrix
Large codex (40 entries), long passage (1,019 words) 0-shot ToolingUtilityLogicRule following	89%	88%	85%	85%	81%	79%	78%	76%	62%	3%	73%
Large codex (40 entries), short passage (165 words) 0-shot ToolingUtilityLogicRule following	92%	92%	89%	89%	85%	85%	76%	69%	3%	3%	68%
Small codex (7 entries), long passage (734 words) 0-shot ToolingUtilityLogicRule following	93%	93%	93%	93%	89%	87%	82%	82%	82%	3%	80%
Small codex (7 entries), short passage (165 words) 0-shot ToolingUtilityLogicRule following	100%	100%	100%	100%	97%	97%	92%	92%	92%	92%	96%
tiers
5 codex entries 0-shot ToolingUtilityLogicRule following	100%	100%	100%	100%	100%	100%	91%	84%	83%	3%	86%
10 codex entries 0-shot ToolingUtilityLogicRule following	94%	92%	92%	86%	86%	86%	79%	79%	66%	64%	83%
20 codex entries 0-shot ToolingUtilityLogicRule following	96%	96%	92%	89%	88%	88%	81%	73%	69%	69%	84%
40 codex entries 0-shot ToolingUtilityLogicRule following	97%	92%	87%	84%	83%	83%	83%	79%	62%	62%	81%
81.36%

Data extraction

Extract key details from a given block of text.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
All valid emails 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Contextual pronoun 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Fruits excluding citrus 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Future event time 0-shot UtilityLogic	50%	50%	50%	50%	50%	50%	50%	50%	50%	50%	50%
Guess the pet 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Highest-rated movie 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Indirect birth year 0-shot UtilityMathematicsLogic	100%	100%	100%	50%	50%	50%	50%	50%	50%	50%	65%
What instrument does Lucy play? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	50%	0%	85%
What's the color of the car? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What's the correct time? 0-shot UtilityLogic	100%	100%	0%	0%	0%	0%	0%	0%	0%	0%	20%
Who's the sister? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Who's the tallest? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
85.00%

Dialogue tags

Various tasks related to dialogue tags in text.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
dialogue-200
Write 200 words with 10% dialogue 0-shot Creative writingRule following	50%	49%	47%	43%	41%	38%	34%	30%	7%	3%	34%
Write 200 words with 50% dialogue 0-shot Creative writingRule following	62%	50%	49%	47%	41%	34%	24%	20%	5%	0%	33%
Write 200 words with 90% dialogue 0-shot Creative writingRule following	100%	99%	85%	84%	73%	72%	68%	53%	50%	18%	70%
dialogue-500
Write 500 words with 30% dialogue 0-shot Creative writingRule following	49%	0%	0%	0%	0%	0%	0%	0%	0%	0%	5%
Write 500 words with 50% dialogue 0-shot Creative writingRule following	30%	18%	0%	0%	0%	0%	0%	0%	0%	0%	5%
Write 500 words with 70% dialogue 0-shot Creative writingRule following	50%	49%	45%	43%	39%	21%	10%	4%	4%	0%	26%
Ungrouped
Write unattributed dialogue 0-shot Creative writingRule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
39.07%

Language Comprehension

Does the model understand more than just English?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Asking for directions (Dutch) 0-shot Language	100%	100%	100%	100%	100%	100%
Asking for directions (German) 0-shot Language	100%	100%	100%	100%	100%	100%
Friend got new kittens (German) 0-shot Language	100%	100%	100%	100%	0%	80%
Friend got new kittens (Tagalog) 0-shot Language	100%	100%	100%	100%	100%	100%
95.00%

Language Writing

Can the model generate text in different languages?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Character dialogue (French) in a story 0-shot Language	91%	80%	78%	78%	75%	80%
Character dialogue (German) in a story 0-shot Language	100%	100%	100%	100%	67%	93%
Character dialogue (Hindi) in a story 0-shot Language	100%	100%	100%	100%	100%	100%
Character dialogue (Italian) in a story 0-shot Language	100%	100%	92%	80%	80%	90%
Character dialogue (Spanish) in a story 0-shot Language	100%	100%	90%	89%	58%	87%
90.26%

N-Length Sentences

Write sentences with exactly N words

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Write sentences with 5 words each 0-shot Rule following	100%	100%	99%	98%	98%	97%	90%	85%	84%	82%	93%
Write sentences with 10 words each 0-shot Rule following	85%	84%	82%	81%	79%	75%	73%	46%	37%	31%	67%
Write sentences with 20 words each 0-shot Rule following	7%	6%	0%	0%	0%	0%	0%	0%	0%	0%	1%
53.96%

Novel outline

Handle questions about the outline of a novel in various formats

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
outline-count
Count acts 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count chapters 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count scenes 0-shot ToolingUtility	100%	0%	0%	0%	0%	0%	0%	0%	0%	0%	10%
pov-count
Count point of views for Jack and Olivia 0-shot ToolingUtility	100%	100%	100%	100%	50%	50%	50%	0%	0%	0%	55%
Count point of views for Jack Harper 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Count point of views for Olivia 0-shot ToolingUtility	100%	100%	0%	0%	0%	0%	0%	0%	0%	0%	20%
62.50%

Tool usage within Novelcrafter

Output messages that are related to tool usage within Novelcrafter

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Create alternate prose sections 0-shot ToolingUtility	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	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Multiple speakers 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	0%	0%	0%	70%
Simple 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Simple (1-shot) 1-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Simple (5-shot) Few-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	0%	0%	80%
Unattributed dialogue 0-shot Utility	100%	100%	100%	100%	100%	0%	0%	0%	0%	0%	50%
76.00%

Write N of X

Write exactly N words/sentences/paragraphs...

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
paragraphs
1 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
3 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
5 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	0%	0%	80%
sentences
1 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
3 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
10 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
20 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	98%	98%	0%	90%
50 sentence summary 0-shot Rule following	98%	92%	77%	2%	0%	0%	0%	0%	0%	0%	27%
words
10 word summary 0-shot Rule following	100%	100%	100%	100%	100%	98%	98%	98%	98%	98%	99%
20 word summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	98%	92%	54%	27%	87%
50 word summary 0-shot Rule following	98%	77%	77%	77%	77%	77%	54%	54%	27%	9%	63%
100 word summary 0-shot Rule following	92%	92%	9%	9%	9%	9%	0%	0%	0%	0%	22%
200 word summary 0-shot Rule following	100%	27%	2%	0%	0%	0%	0%	0%	0%	0%	13%
75.44%