NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-10-08-01M4DAGSST8Y2T1KJSTAZJDTKF
Run Details
Model:
Claude Haiku 5.5 (Adaptive)
Test:
Dialogue tags
Scenario:
Write 500 words with 50% dialogue
Duration:
11.6s
Cost:
$0.001076
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
86.38%
Matches word count
(details)
10.60%
Dialogue to Total Word Ratio
(details)
48.4926%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 50% 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 back booth of Lefty's Diner smelled of burnt coffee and bad decisions, which suited Molly and Bill just fine. Bill unrolled a blueprint across the sticky table and pinned the corners with a ketchup bottle, a sugar dispenser, and a stapler he had clearly borrowed without asking. "Party starts at two," Molly said, tapping the map with a french fry. "Birthday party for a seven-year-old named Brayden. The hall is on Elm Street, the back window is unlocked, and there are forty-two presents stacked by the piano." "Forty-two," Bill whispered, his eyes glowing. "Molly, that's a lot of Lego." "It's a lot of everything. Bikes, trains, one suspicious box that says 'Do Not Open Until Christmas.'" "Why would anyone do that to a kid?" "Focus, Bill. Phase one: the clown." "We're not using the clown again." "The clown is essential. Nobody looks twice at a clown carrying a sack." Bill frowned and crossed his arms. "Last time the clown got a cramp and sat on the goldfish." "That was a rough day for the goldfish. Phase two: the bouncy castle. We pop the side flap, let the kids spill out, and while the parents are chasing them back inside, we slip through the kitchen." Outside, a delivery truck rumbled past, rattling the windows. Molly didn't flinch. She had once robbed a jewelry store during a fire drill and walked out with a diamond necklace tucked inside a cereal box. "And the parents?" Bill asked. "Parents are the easy part. Give them a tray of cupcakes and they'll tell you anything. Ask about their mortgage and they'll cry." Bill scribbled furiously on a napkin. "I've got a problem. The vent above the presents is too small." "So we go through the front door like civilized criminals. Wrapping paper hides everything." "And if somebody sees us?" Molly pulled two plastic party hats from her jacket and set one on Bill's head. It was purple and slightly crushed. He looked like a deflated eggplant. "Then we say we're uncles." "We don't look like uncles." "Nobody looks like an uncle, Bill. That's what makes it work." He sighed and straightened the hat. "Fine. What do we do with the presents once we've got them?" "We sell them at the flea market on Saturday. Half price, no receipts. Everybody loves a bargain." Bill paused, the napkin going still in his hand. "Molly, are we the bad guys?" She considered the question seriously, tapping her chin. "We're the bad guys with a ninety percent success rate and a getaway van with a working radio. That's the best kind." "Ninety percent?" "The other ten percent is mostly the clown." Bill grinned, pulled a pair of novelty rubber masks from his coat pocket, and slid one across the table. It depicted a smiling cartoon giraffe. "Then let's go steal some birthdays." Molly slipped on her giraffe, adjusted the ears, and stood up. Behind the counter, the waitress shrugged and went back to her crossword. Nobody at Lefty's ever asked questions. That was why they came back every Thursday.
created_at
"2026-10-08T08:36:46.639Z"
10/8/2026, 8:36:46 AM
model
"anthropic/claude-haiku-5.5-20261007"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
11497
moderation_latency
(null)
generation_time
11497
tokens_prompt
75
tokens_completion
758
native_tokens_prompt
95
native_tokens_completion
2132
native_tokens_completion_images
(null)
native_tokens_reasoning
1031
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
0.0010755
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791448606-CzyVs56ksOlxP29GlacF"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791448606-rR7YSdaRvsmnGQcjfuWg"
upstream_id
"msg_011CfpTxBnFhEhrCMXxvk5Xo"
provider_responses
0
endpoint_id
"b6cdf493-3a61-441f-a134-e7944fddb980"
id
"msg_011CfpTxBnFhEhrCMXxvk5Xo"
is_byok
false
latency
765
model_permaslug
"anthropic/claude-haiku-5.5-20261007"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.0010755
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
86.38%
Matches word count
n/a
neededClean
false
words
511
10.60%
Dialogue to Total Word Ratio
Ratio: 56.70%, Deviation: 6.70%
neededClean
false
wordsTotal
515
wordsDialogue
292
48.4926%