NC Bench
Overview
About
Tests
Models
Vendors
Compare
Run: 2026-02-24-01KJ8X4DEX2QQVENA3MW94CRZN
Run Details
Model:
Claude Sonnet 4.6 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 500 words with 70% dialogue
Duration:
19.8s
Cost:
$0.013146
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
35.00%
Matches word count
(details)
34.09%
Dialogue to Total Word Ratio
(details)
34.5473%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 70% 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 spread the hand-drawn map across the hood of their rusted van and tapped it with a stubby finger. "The target is a six-year-old's birthday party," she said. "Pink balloons on the mailbox. Security is a golden retriever named Biscuit." Bill stared at her. "Molly. We are going to steal presents from a child." "We are going to redistribute gifts from a child whose parents clearly have more money than sense. There's a bouncy castle, Bill. A bouncy castle on a Tuesday." "That's not a crime." "It's offensive is what it is." She pointed to a crude rectangle on the map. "Present table is here. The party runs two to four. We go in at three fifteen when everyone's doing cake." Bill leaned against the van. "And how do we get past Biscuit?" "I have string cheese." "That's your whole plan? String cheese?" "It's very good string cheese." Bill rubbed his face with both hands. "What are we wearing? We can't just walk in looking like this." "I'm glad you asked." Molly reached into the back of the van and produced two enormous foam suits. "We are going as Chip and Dale." "The chipmunks." "The chipmunks." "Molly, those are just brown barrels with ears glued on." "They're artisanal." "One of them is leaking stuffing." "That one's yours. Now listen." She grabbed his arm and pulled him back to the map. "We go in, we mingle, we compliment someone's kid, we locate the presents, and when the cake comes out we load everything into the duffel bags we've hidden inside the suits." Bill blinked slowly. "Inside the suits." "Roomy suits." "And nobody is going to notice two enormous chipmunks waddling out the back gate carrying lumpy bags?" "Kids love chipmunks, Bill. They won't say a word. They'll think it's part of the entertainment." "What if a parent asks who hired us?" "We say the other parent did." "That's genius." "Thank you." "I mean that genuinely. That's actually quite clever." Molly straightened up and crossed her arms, looking pleased with herself. "I've been in this business fifteen years. You think I don't know how a birthday party operates?" "You absolutely do not know how a birthday party operates." "I have YouTube." Bill looked at the map again, then at the foam suits, then at the small cooler presumably containing the string cheese. He exhaled very slowly through his nose. "If Biscuit bites me," he said, "I'm keeping the presents." "Biscuit won't bite you. You're a chipmunk. Dogs love chipmunks." "Dogs chase chipmunks." "In a playful way." Bill picked up his suit and held it at arm's length. A small cloud of stuffing drifted to the gravel. He looked at Molly. Molly looked at him with the calm, absolute confidence of someone who had never once been right about anything but remained entirely unbothered by that fact. "Fine," Bill said. "But I'm driving us home."
created_at
"2026-02-24T22:43:18.633Z"
2/24/2026, 10:43:18 PM
model
"anthropic/claude-4.6-sonnet-20260217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
517
moderation_latency
(null)
generation_time
19693
tokens_prompt
77
tokens_completion
844
native_tokens_prompt
92
native_tokens_completion
858
native_tokens_completion_images
(null)
native_tokens_reasoning
81
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
0.013146
router
(null)
provider_responses
0
endpoint_id
"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id
"msg_012WC3jEnpRsjHfuYc8XtiX9"
is_byok
false
latency
501
model_permaslug
"anthropic/claude-4.6-sonnet-20260217"
provider_name
"Anthropic"
status
200
api_type
"completions"
id
"gen-1771972998-FBzEMTorMG1gduhWt601"
upstream_id
"msg_012WC3jEnpRsjHfuYc8XtiX9"
total_cost
0.013146
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
35.00%
Matches word count
n/a
neededClean
false
words
482
34.09%
Dialogue to Total Word Ratio
Ratio: 65.36%, Deviation: 4.64%
neededClean
false
wordsTotal
485
wordsDialogue
317
34.5473%