NC Bench
Overview
About
Tests
Models
Model
Claude Haiku 4.5
Test
Dialogue tags
Scenario
Write 200 words with 10% dialogue
Run ID
2026-02-08-01KGYZMKAAXQ94J3V8N27Q1QME
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 10% words of dialogue between two thieves named Molly and Bill who are planning to break into a children's party to steal all the presents. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Molly crouched behind the inflatable bounce house, studying the gymnasium through binoculars. Streamers hung from every corner like colorful nooses, and a mountain of wrapped presents sat unguarded near the punch bowl. "Bill, how many six-year-olds do you think we're dealing with?" she whispered. "At least forty. Maybe fifty if you count the sugar-crazed ones." She nodded grimly. This would require precision. They'd cased the joint for weeks, studying party patterns, pizza delivery schedules, and the critical bathroom break window. Bill adjusted his fake mustache, which was already peeling at the corners from nervous sweating. Molly pulled out their blueprints, marked with X's indicating present locations and danger zones. The clown in the corner presented an unexpected obstacle. She hadn't anticipated a clown. "What about the clown?" Bill asked, reading her mind. "We distract him with balloon animals." Bill squinted at the gymnasium again. A child shrieked with laughter. Another knocked over the punch bowl. The presents sat there, glorious and defenseless, waiting to be liberated by two professional thieves with absolutely no experience handling children's birthday parties.
created_at
"2026-02-08T15:59:05.010355+00:00"
Sunday, February 8th, 2026 at 3:59:05 PM GMT+00:00
model
"anthropic/claude-4.5-haiku-20251001"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
522
moderation_latency
(null)
generation_time
4336
tokens_prompt
61
tokens_completion
239
native_tokens_prompt
75
native_tokens_completion
275
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00145
router
(null)
provider_responses
0
id
"msg_01HiY41hShfSdWZqf3HQYGw9"
status
200
is_byok
false
latency
510
endpoint_id
"41d2915a-92e6-4993-b537-210b4e10cba8"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-haiku-20251001"
api_type
"completions"
id
"gen-1770566339-S7KbX7RH5T7Ds0NF3S9C"
upstream_id
"msg_01HiY41hShfSdWZqf3HQYGw9"
total_cost
0.00145
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
27.1658%
Matches word count
n/a
neededClean
false
words
181
55.1293%
Dialogue to Total Word Ratio
Ratio: 18.78%, Deviation: 8.78%
neededClean
false
wordsTotal
181
wordsDialogue
34
41.1475%