Run: 2026-05-29-01KSSK5R7YP6YRTYZK9VWSZMWB

Run Details

Duration:
19.6s
Cost:
$0.027640
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.92% Matches word count (details)
97.85% Dialogue to Total Word Ratio (details)
98.8865% 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

AI
Molly spread the blueprint across the hood of the rusted Buick, smoothing its crinkled edges with the reverence of a general surveying a battlefield. The afternoon sun glinted off her oversized sunglasses, which she refused to remove despite being parked in a shadowy alley. "Okay, Bill, focus," she said, jabbing a finger at the paper. "The Hendersons' backyard. Saturday. Fourteen hundred hours sharp." Bill leaned in, squinting. He had a habit of breathing through his mouth when he concentrated, which made him sound like an asthmatic walrus. "This is just a drawing of a bouncy castle," he said. "It's a *layout*. The bouncy castle is here, the snack table is here, and the present pile—" she tapped dramatically, "—is right by the gazebo." Bill scratched his stubbled chin. He'd stolen jewelry, cars, and once, memorably, an entire vending machine. But this felt different. This felt wrong in a way he couldn't quite articulate. "They're seven-year-olds, Molly." "They're *spoiled* seven-year-olds with rich parents. Do you know what kids get these days? iPads. Drones. One of those little electric cars that cost more than my apartment." He had to admit, the electric car was tempting. The plan, as Molly explained it over the next twenty minutes, was elegant in its insanity. Bill would dress as a clown—a profession universally trusted yet universally ignored—and create a distraction near the bouncy castle. Meanwhile, Molly would slip behind the gazebo dressed as a caterer, load the presents into oversized cake boxes, and wheel them out to the van before anyone noticed the cake had legs. "I'm not wearing the clown suit," Bill said. "You already agreed to the clown suit." "I agreed to *a* costume. I assumed it would be dignified." Molly pulled the rubber nose from her jacket pocket and held it up like an interrogator presenting evidence. Bill stared at it the way a man stares at his own mortality. "Fine," he muttered, snatching it. "But if I get hit with a water balloon, I'm walking." "You won't get hit with a water balloon." "Children are unpredictable, Molly. They're tiny anarchists with sugar in their veins." She rolled her eyes, folding the blueprint with crisp efficiency. There was a beauty to the simplicity of it all. No lasers, no vaults, no armed guards. Just frosting, balloon animals, and the trusting naivety of suburban parents who thought a clown was a clown. Bill turned the rubber nose over in his hands, a strange melancholy settling over him. Somewhere in the back of his criminal heart, a tiny voice questioned whether stealing birthday presents crossed a moral line that even thieves shouldn't cross. Then he remembered the electric car. "What time do we get there?" he asked. Molly grinned, sliding her sunglasses down to reveal eyes sparkling with greed and showmanship. She clapped him hard on the shoulder, nearly knocking the nose from his grip. "Now you're thinking," she said. "Suit up, Bozo. We've got a party to ruin."
created_at"2026-05-29T10:06:14.789Z" 5/29/2026, 10:06:14 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1353
moderation_latency(null)
generation_time19604
tokens_prompt77
tokens_completion785
native_tokens_prompt93
native_tokens_completion1087
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
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origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.02764
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_015TK3rhkxEeqa7Zghcowdt6"
is_byokfalse
latency1353
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780049174-RsWWzjYhLK0ZTUcu1kNu"
session_id(null)
api_type"completions"
id"gen-1780049174-5PPL54Vdp2o6WTAq1rqI"
upstream_id"msg_015TK3rhkxEeqa7Zghcowdt6"
total_cost0.02764
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.92% Matches word count n/a
neededCleanfalse
words497
97.85% Dialogue to Total Word Ratio
Ratio: 29.34%, Deviation: 0.66%
neededCleanfalse
wordsTotal501
wordsDialogue147
98.8865%