NC Bench
Overview
About
Tests
Models
Model
Claude Opus 4.5
Test
Dialogue tags
Scenario
Write 500 words with 30% dialogue
Run ID
2026-02-08-01KGYZ3797T48EAN9FF2AJJF9K
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 minivan smelled like stale chicken nuggets and broken dreams. Molly pressed her binoculars against the window, fogging up the glass as she watched the parade of parents carrying wrapped boxes into the suburban fortress known as 47 Maple Lane. Bill fidgeted with his fake mustache in the rearview mirror. It was the kind of mustache that screamed either children's entertainer or someone who shouldn't be within five hundred feet of a school. Perfect for their purposes. "That's the fourteenth present in the last twenty minutes," Molly announced, scribbling in her notebook. "These kids are making out like bandits. Unlike us, who are actual bandits and currently making out with nothing." "Remind me again why we're robbing a seven-year-old's birthday party?" Molly lowered the binoculars and fixed him with a stare that could curdle milk. "Because, Bill, little Timmy Henderson's father is Marcus Henderson. Ring any bells?" Bill's face remained magnificently blank. "Marcus Henderson. The man who fired me from Henderson's Diamond Emporium for allegedly stealing a sapphire necklace." "Did you steal it?" "That's not the point. The point is that man owes me, and I intend to collect through his son's birthday presents. Call it severance pay with interest." Bill scratched his head, disturbing his disguise. They were dressed as party entertainers, complete with rainbow suspenders and shirts advertising Magic Mike's Magnificent Birthday Bash. The real Magic Mike was currently enjoying an all-expenses-paid trip to a spa three towns over, courtesy of a gift certificate Molly had won in a raffle she'd rigged. "The security seems pretty tight for a kid's party," Bill observed. "I count at least fifteen parents in there. That's thirty eyeballs, Molly." "Parents at children's parties are the least observant people on the planet. They're running on two hours of sleep and boxed wine. We could waltz in wearing ski masks and they'd just ask if we're with the catering company." She pulled out a crumpled flyer and smoothed it against the dashboard. The advertisement promised magic tricks, balloon animals, and something called the Happy Fun Time Dance Explosion. "Do you actually know any magic tricks?" Bill asked. "I can make myself disappear when the check comes. That's magic enough for our purposes." The plan was elegant in its simplicity. They would enter as entertainers, distract the sugar-crazed children with mediocre balloon animals, then load the presents into their van during the cake-cutting ceremony. By the time anyone noticed the missing gifts, they'd be three counties away, pawning whatever electronics and gift cards they could find. Bill adjusted his rainbow suspenders with the gravity of a man preparing for battle. "What if there's a real entertainer scheduled?" "Already handled. Magic Mike sends his regrets due to a sudden case of food poisoning." "You poisoned a children's entertainer?" "Relax. Laxatives aren't poison. They're just aggressive encouragement to stay near a bathroom." Bill nodded slowly, accepting this logic the way he accepted most of Molly's plans.
created_at
"2026-02-08T15:49:50.117484+00:00"
Sunday, February 8th, 2026 at 3:49:50 PM GMT+00:00
model
"anthropic/claude-4.5-opus-20251124"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1560
moderation_latency
(null)
generation_time
18726
tokens_prompt
61
tokens_completion
639
native_tokens_prompt
75
native_tokens_completion
729
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
0.0186
router
(null)
provider_responses
0
id
"msg_01Su3vf1weLPbRecEVvPGQk3"
status
200
is_byok
false
latency
1560
endpoint_id
"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-opus-20251124"
api_type
"completions"
id
"gen-1770565770-Yx95oGCdVOsdWwVKC69X"
upstream_id
"msg_01Su3vf1weLPbRecEVvPGQk3"
total_cost
0.0186
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
99.3769%
Matches word count
n/a
neededClean
false
words
495
0.0016%
Dialogue to Total Word Ratio
Ratio: 44.85%, Deviation: 14.85%
neededClean
false
wordsTotal
495
wordsDialogue
222
49.6893%