NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-29-01M3P2J85CEGX2PVX0C5G49Y4W
Run Details
Model:
Claude Sonnet 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 500 words with 70% dialogue
Duration:
13.7s
Cost:
$0.014080
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
0.00%
Matches word count
(details)
89.03%
Dialogue to Total Word Ratio
(details)
44.5135%
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 pressed the binoculars to her eyes and sighed. "Seven-year-olds. Bouncy castle, a clown, and a pile of presents the size of a Buick." Bill lowered his sandwich. "Are we sure about this? Last week we robbed a jewelry store. Now we're robbing Braxton, who turns seven." "Braxton's parents spent four hundred dollars on a cake shaped like a excavator. Those people can afford to lose a few presents." "That's the moral high ground you're standing on? Cake?" "It's a very expensive excavator, Bill. Now focus. Here's the plan. You go in as the pizza guy." "Why me?" "Because you look like someone who's delivered a lot of pizza." Bill glanced down at his shirt. "That's fair, actually." "While you distract the parents, I'll slip in through the side gate, grab the presents, and load them into the laundry cart." "What laundry cart?" "The one you're going to steal from the neighbor's porch." "When did this become my job?" "When you stopped arguing about the pizza thing. Keep up." Bill chewed thoughtfully. "What about the clown?" Molly lowered the binoculars slowly. "Kevin is a problem." "You know his name?" "I've done my research. Kevin has been to four of these parties this month. Rumor is he never breaks character, even when he's alone. Even in the parking lot." "That's terrifying." "That's professionalism. Which is why you'll keep him busy." "Me? With the clown?" "Ask him to make you a balloon animal. Ask for something complicated, like a giraffe. Those take forever." Bill swallowed. "And if he asks me to do the magic trick where I pick a card?" "Then you pick a card, Bill. Be a team player." A rustle came from the hedge beside them. Both thieves froze. A small boy in a paper crown and a dinosaur costume peered out at them, holding a juice box like a weapon. "I heard everything," he said. Molly cleared her throat. "Braxton, buddy, hi. We're, uh, landscapers." "You said laundry cart." "Very big lawns," Bill offered weakly. Braxton narrowed his eyes. "I want forty percent." Molly blinked. "Excuse me?" "Forty percent. Plus the excavator cake. My cousin Dylan got me a Lego set I already own, and I want it gone." Bill leaned toward Molly and whispered, "He's better at this than we are." "Thirty," Molly said to the boy. "Thirty-five, and I'll distract Kevin." "Deal," said Bill instantly. "Please take Kevin." Braxton spat in his palm and held it out. Molly stared at it for a long moment, sighed, and shook it. "Kid," she said, "you're going places." "I know," said Braxton, and marched back toward the bouncy castle like a tiny warlord.
created_at
"2026-09-29T07:55:13.459Z"
9/29/2026, 7:55:13 AM
model
"anthropic/claude-sonnet-5.5-20260928"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3246
moderation_latency
(null)
generation_time
13672
tokens_prompt
75
tokens_completion
811
native_tokens_prompt
95
native_tokens_completion
1389
native_tokens_completion_images
(null)
native_tokens_reasoning
389
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.01408
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790668513-4oErxncQQ66RxeBDwJLH"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790668513-rawVPNjQtT4JgXNoR3S7"
upstream_id
"msg_011CfXNWAGbnaMkNJCPXAwds"
provider_responses
0
endpoint_id
"99aaad94-923b-4fc1-b763-271ed5486f7a"
id
"msg_011CfXNWAGbnaMkNJCPXAwds"
is_byok
false
latency
613
model_permaslug
"anthropic/claude-sonnet-5.5-20260928"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.01408
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Claude Platform on AWS"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
0.00%
Matches word count
n/a
neededClean
false
words
443
89.03%
Dialogue to Total Word Ratio
Ratio: 71.52%, Deviation: 1.52%
neededClean
false
wordsTotal
446
wordsDialogue
319
44.5135%