Run: 2026-05-31-01KSYX8MM30THEZFSW63JMRYBD

Run Details

Duration:
20.3s
Cost:
$0.029165
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
90.48% Matches word count (details)
4.99% Dialogue to Total Word Ratio (details)
47.7366% 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 blueprints across the kitchen table, smoothing out the wrinkles with the reverence of a general planning an invasion. The paper crinkled, revealing a hand-drawn map of suburban hell: a backyard, a bouncy castle, and an X marking the gift table. Bill leaned over her shoulder, chewing a toothpick that had long since lost its flavor. "You're telling me," he said slowly, "that our big score is a pile of presents wrapped by people who can't even tie their own shoes?" "Don't underestimate the Hendersons," Molly said, jabbing a finger at the map. "Their kid turns seven this Saturday. Rich family. We're talking premium loot. Tablets. LEGO sets. Maybe even a Nintendo." Bill straightened up, unconvinced. He scanned the perimeter she'd sketched, noting the position of what appeared to be a clown labeled "THREAT LEVEL: UNKNOWN." "And the guards?" "Parents." Molly pulled out a second sheet, this one a list of names. "Twelve adults, minimum. All distracted, all exhausted, all hopped up on sheet cake and bad decisions. The moment that piƱata breaks, chaos erupts. That's our window." He picked up the list, frowning. "There's a guy here just labeled 'Uncle Greg.' Why's his name underlined three times?" "Uncle Greg," Molly said gravely, "drinks. By two o'clock he'll be asleep in a lawn chair. By two-fifteen, he won't notice a freight train rolling through the yard." Bill nodded, slowly coming around to the genius of it all. He paced the small kitchen, hands clasped behind his back like a man wrestling with destiny. "What about disguises?" Molly reached under the table and produced two enormous, fluffy costumes. She tossed one at him. It hit his chest with a soft, humiliating *poof*. He held it up. A dinosaur. Bright purple, with a sewn-on smile and a stubby little tail. "Absolutely not," he said. "Everybody loves a party mascot, Bill. Nobody questions the dinosaur. The dinosaur is invisible. The dinosaur is *trusted*." Bill stared into the costume's plastic, dead-eyed face. It seemed to be mocking him, this purple symbol of his fallen ambitions. He had once robbed an armored car. He had once outrun three squad cars on a motorcycle. And now, this. "And how exactly," he asked, "do we carry the presents out? In our little dinosaur arms?" Molly grinned, the kind of grin that meant she'd been waiting for this question all morning. She gestured dramatically toward the corner, where a battered ice cream cart sat covered in a tarp. "We roll in selling treats. We roll out with the goods stashed underneath. The kids get popsicles. We get the spoils. Everybody wins." Bill considered this. He looked at the cart. He looked at the dinosaur costume crumpled in his hands. He looked at Molly, who was practically vibrating with criminal enthusiasm. He sighed, a long sigh that carried the weight of every poor life choice that had led him to this exact moment. "Fine," he muttered, stepping one leg into the costume. "But I'm not doing the dinosaur voice." "You'll do the voice." "I'll do the voice."
created_at"2026-05-31T11:38:47.319Z" 5/31/2026, 11:38:47 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1027
moderation_latency(null)
generation_time20290
tokens_prompt77
tokens_completion799
native_tokens_prompt93
native_tokens_completion1148
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.029165
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01WaFWxwLLxKHy87zVoFKNDL"
is_byokfalse
latency1026
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-1780227527-Y7elYpqSNqlwI3w5zSS3"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227527-Q701dL0wCvWivfqhvHFE"
upstream_id"msg_01WaFWxwLLxKHy87zVoFKNDL"
total_cost0.029165
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
90.48% Matches word count n/a
neededCleanfalse
words510
4.99% Dialogue to Total Word Ratio
Ratio: 37.74%, Deviation: 7.74%
neededCleanfalse
wordsTotal514
wordsDialogue194
47.7366%