Claude Opus 4 - NC Bench

claude-opus-4-20250514

Claude Opus 4

via anthropic

Release Date

May 22nd, 2025

Parameters

–

Context Size

200k

Creative writing

54.27%

Rule following

74.82%

Utility

85.67%

Mathematics

100.00%

Tooling

80.00%

Language

87.81%

Logic

87.50%

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
Who's the tallest? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What's the color of the car? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What instrument does Lucy play? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Guess the pet 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What's the correct time? 0-shot UtilityLogic	100%	100%	100%	100%	100%	0%	0%	0%	0%	0%	50%
Who's the sister? 0-shot UtilityLogic	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%
Indirect birth year 0-shot UtilityMathematicsLogic	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%
Highest-rated movie 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
All valid emails 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
91.67%

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
Write unattributed dialogue 0-shot Creative writingRule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Write 200 words with 10% dialogue 0-shot Creative writingRule following	100%	97%	96%	95%	85%	80%	76%	70%	67%	49%	81%
Write 200 words with 50% dialogue 0-shot Creative writingRule following	50%	49%	49%	48%	47%	45%	34%	18%	3%	1%	34%
Write 200 words with 90% dialogue 0-shot Creative writingRule following	99%	99%	95%	93%	89%	86%	81%	68%	64%	21%	79%
Write 500 words with 30% dialogue 0-shot Creative writingRule following	50%	50%	50%	49%	34%	34%	22%	5%	0%	0%	29%
Write 500 words with 50% dialogue 0-shot Creative writingRule following	59%	50%	50%	47%	47%	18%	10%	7%	1%	0%	29%
Write 500 words with 70% dialogue 0-shot Creative writingRule following	48%	47%	43%	38%	38%	18%	18%	17%	1%	0%	27%
54.27%

Language Comprehension

Does the model understand more than just English?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Friend got new kittens (Tagalog) 0-shot Language	100%	100%	100%	100%	100%	100%
Friend got new kittens (German) 0-shot Language	100%	100%	100%	100%	100%	100%
Asking for directions (German) 0-shot Language	100%	100%	100%	100%	100%	100%
Asking for directions (Dutch) 0-shot Language	100%	100%	100%	100%	100%	100%
100.00%

Language Writing

Can the model generate text in different languages?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Character dialogue (Spanish) in a story 0-shot Language	93%	93%	86%	85%	79%	87%
Character dialogue (French) in a story 0-shot Language	83%	82%	82%	75%	74%	79%
Character dialogue (German) in a story 0-shot Language	100%	93%	90%	90%	67%	88%
Character dialogue (Italian) in a story 0-shot Language	93%	88%	77%	75%	69%	81%
Character dialogue (Hindi) in a story 0-shot Language	83%	50%	50%	47%	47%	55%
78.05%

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
Count chapters 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count chapters (indented) 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count acts 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count acts (indented) 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count scenes 0-shot ToolingUtility	100%	100%	100%	0%	0%	0%	0%	0%	0%	0%	30%
Count scenes (indented) 0-shot ToolingUtility	100%	100%	0%	0%	0%	0%	0%	0%	0%	0%	20%
Count point of views for Jack Harper 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count point of views for Jack Harper (indented) 0-shot ToolingUtility	100%	100%	100%	0%	0%	0%	0%	0%	0%	0%	30%
Count point of views for Olivia 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Count point of views for Olivia (indented) 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count point of views for Jack and Olivia 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	50%	95%
Count point of views for Jack and Olivia (indented) 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	50%	0%	0%	75%
78.33%

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%

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%	100%	100%	100%	100%	97%	95%	94%	93%	98%
Write sentences with 10 words each 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	88%	99%
Write sentences with 20 words each 0-shot Rule following	83%	75%	70%	70%	66%	64%	61%	61%	61%	53%	66%
87.66%

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
Simple 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Simple (1-shot) 1-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Simple (5-shot) Few-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Multiple speakers 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Unattributed dialogue 0-shot Utility	100%	100%	100%	0%	0%	0%	0%	0%	0%	0%	30%
86.00%

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
10 word summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
20 word summary 0-shot Rule following	100%	100%	100%	100%	100%	98%	98%	98%	98%	98%	99%
50 word summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	98%	98%	92%	92%	98%
100 word summary 0-shot Rule following	100%	98%	98%	92%	77%	54%	54%	27%	27%	0%	63%
200 word summary 0-shot Rule following	92%	77%	0%	0%	0%	0%	0%	0%	0%	0%	17%
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%	98%	92%	77%	77%	95%
50 sentence summary 0-shot Rule following	54%	9%	2%	0%	0%	0%	0%	0%	0%	0%	6%
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%	100%	100%	100%
82.92%