Claude Haiku 4.5 - NC Bench

anthropic/claude-haiku-4.5

Claude Haiku 4.5

via OpenRouter

Release Date

Oct 15th, 2025

Parameters

–

Context Size

200k

Creative writing

49.44%

Rule following

59.16%

Utility

80.00%

Mathematics

100.00%

Tooling

72.31%

Language

85.84%

Logic

81.25%

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	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
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%
87.50%

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%	61%	61%	92%
Write 200 words with 10% dialogue 0-shot Creative writingRule following	100%	100%	99%	97%	97%	94%	73%	50%	41%	38%	79%
Write 200 words with 50% dialogue 0-shot Creative writingRule following	96%	88%	76%	70%	68%	48%	41%	30%	16%	0%	53%
Write 200 words with 90% dialogue 0-shot Creative writingRule following	100%	98%	93%	87%	87%	60%	55%	52%	50%	44%	73%
Write 500 words with 30% dialogue 0-shot Creative writingRule following	50%	49%	41%	38%	34%	3%	1%	0%	0%	0%	22%
Write 500 words with 50% dialogue 0-shot Creative writingRule following	52%	47%	45%	26%	5%	0%	0%	0%	0%	0%	18%
Write 500 words with 70% dialogue 0-shot Creative writingRule following	64%	19%	6%	5%	4%	1%	1%	0%	0%	0%	10%
49.44%

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%	0%	80%
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 (Spanish) in a story 0-shot Language	89%	82%	71%	63%	53%	71%
Character dialogue (French) in a story 0-shot Language	100%	92%	86%	73%	62%	82%
Character dialogue (German) in a story 0-shot Language	85%	82%	77%	65%	64%	75%
Character dialogue (Italian) in a story 0-shot Language	94%	94%	93%	73%	67%	84%
Character dialogue (Hindi) in a story 0-shot Language	100%	100%	93%	53%	53%	80%
78.51%

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%	100%	100%	0%	0%	0%	0%	0%	50%
Count scenes (indented) 0-shot ToolingUtility	100%	100%	100%	100%	0%	0%	0%	0%	0%	0%	40%
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 Jack Harper (indented) 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%	100%	100%	0%	0%	0%	0%	0%	0%	40%
Count point of views for Olivia (indented) 0-shot ToolingUtility	100%	100%	0%	0%	0%	0%	0%	0%	0%	0%	20%
Count point of views for Jack and Olivia 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	0%	0%	0%	0%	60%
Count point of views for Jack and Olivia (indented) 0-shot ToolingUtility	100%	100%	100%	100%	50%	50%	0%	0%	0%	0%	50%
70.00%

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	99%	99%	99%	98%	97%	92%	90%	88%	86%	84%	93%
Write sentences with 10 words each 0-shot Rule following	89%	89%	86%	86%	82%	77%	74%	74%	74%	67%	80%
Write sentences with 20 words each 0-shot Rule following	71%	66%	52%	50%	33%	10%	0%	0%	0%	0%	28%
67.05%

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%	0%	0%	0%	0%	0%	0%	0%	0%	0%	10%
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%	100%	100%	100%	100%	100%	100%	100%	100%
82.00%

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%	98%	100%
20 word summary 0-shot Rule following	100%	100%	100%	98%	77%	54%	54%	27%	9%	9%	63%
50 word summary 0-shot Rule following	100%	100%	100%	92%	77%	54%	54%	27%	9%	0%	61%
100 word summary 0-shot Rule following	100%	54%	0%	0%	0%	0%	0%	0%	0%	0%	15%
200 word summary 0-shot Rule following	100%	27%	0%	0%	0%	0%	0%	0%	0%	0%	13%
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	98%	92%	77%	77%	77%	27%	27%	27%	9%	0%	51%
50 sentence summary 0-shot Rule following	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
1 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
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%	0%	0%	0%	0%	0%	0%	0%	0%	20%
62.57%