NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-29-01M3P2JYKM47Z0Z140TM11MY5F
Run Details
Model:
Claude Sonnet 5.5 (Reasoning)
Test:
Dialogue tags
Scenario:
Write 500 words with 30% dialogue
Duration:
19.1s
Cost:
$0.023180
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
0.00%
Matches word count
(details)
9.54%
Dialogue to Total Word Ratio
(details)
4.7705%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 30% 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
The bouncy castle was shaped like a dragon, and Molly was fairly sure it was watching her. She lowered her binoculars and handed them to Bill, who crouched beside her in the hydrangeas wearing a paper crown. He insisted it was camouflage. She had stopped arguing forty minutes ago. "Twenty-two children," she whispered. "Four parents. One magician who is definitely drunk." "And the presents?" "Stacked by the patio. Taller than a toddler, shinier than my last three getaway cars." Bill squinted. "That's a lot of gift wrap. Ethically, I feel we should only take the good ones." "We're robbing a seven-year-old, Bill. Ethics left the van at the last exit." He nodded solemnly and straightened his crown. Across the lawn, a clown wrestled a balloon into the shape of a poodle. The balloon won. It burst, and three children began to wail in perfect harmony. "When the cake comes out, every eye goes to the candles," Molly said. "You take the wagon, I take the pile." "Why do I get the wagon? It's pink." "Because it's the only thing that can carry forty presents, and you're already wearing a tiara." "It's a crown." "It's sparkling, Bill." He touched it, wounded. Then a shrill voice rang out across the yard, announcing cake. The parents cheered, and the children stampeded toward the table like a herd of tiny, sugar-fueled wildebeest. "Go," Molly hissed. They moved during the second verse of the birthday song. Bill hauled the pink wagon across the grass, its left wheel squeaking like a dying mouse, while Molly slipped toward the mountain of presents. She stopped short. A small girl in a unicorn costume stood guard in front of it, arms folded. "You're not parents," the girl said. "We're entertainment," Molly said smoothly. "The magician's already here." "We're his backup," Bill offered. "Very high-level. Ask anyone." The girl studied his head. "That's my crown." Bill went pale. "Is it?" "Ten percent," she said. "Or I scream." Molly stared at her. Twenty years of thieving, and she had never been so proud or so terrified of another human being. "Five, and you keep the wagon." "Seven, and I keep the wagon." "Deal." They shook on it, palm to sticky palm. Behind them the candles were blown out to wild applause, and nobody noticed forty presents rolling quietly toward the hedge, pulled by a grown man in a tiara, squeaking all the way.
created_at
"2026-09-29T07:55:36.442Z"
9/29/2026, 7:55:36 AM
model
"anthropic/claude-sonnet-5.5-20260928"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3579
moderation_latency
(null)
generation_time
19100
tokens_prompt
75
tokens_completion
916
native_tokens_prompt
95
native_tokens_completion
2299
native_tokens_completion_images
(null)
native_tokens_reasoning
1423
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
0.02318
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790668536-ofqWrdRRZ1OhfgMPLK39"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790668536-VoNcrIai764aZT26HaTO"
upstream_id
"msg_011CfXNXrBxtxZdqvpMETpPw"
provider_responses
0
endpoint_id
"99aaad94-923b-4fc1-b763-271ed5486f7a"
id
"msg_011CfXNXrBxtxZdqvpMETpPw"
is_byok
false
latency
669
model_permaslug
"anthropic/claude-sonnet-5.5-20260928"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.02318
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
402
9.54%
Dialogue to Total Word Ratio
Ratio: 36.86%, Deviation: 6.86%
neededClean
false
wordsTotal
407
wordsDialogue
150
4.7705%