Run: 2026-05-31-01KSYXB30F2V9PAPY9JMVQAYP2

Run Details

Duration:
21.4s
Cost:
$0.029765
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.98% Matches word count (details)
0.00% Dialogue to Total Word Ratio (details)
49.9920% 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

AI
Molly spread the blueprint across the kitchen table, smoothing out the wrinkles with the side of her hand. "Behold," she said. "The Hendersons' backyard. Ground zero for Operation Birthday Bonanza." Bill leaned in, squinting. "That's a napkin." "It's a tactical diagram." "You drew a bouncy castle in crayon." "I drew it to scale," Molly said, offended. "And that's not crayon, it's a fine-point marker. Now focus. The party starts at noon. By twelve-thirty, the presents will be stacked on that gift table like treasure on a pirate ship." Bill scratched his stubble. "And how exactly do two grown adults walk into a seven-year-old's birthday party without anyone noticing?" "Disguises." Molly grinned and produced a paper bag. From it she pulled two enormous foam costumes. "We go as the entertainment." Bill held one up. It was a bright purple dinosaur with a permanently surprised expression. "Absolutely not." "You'll be Mister Stompy. I'll be his lovely assistant, Sparkle the Clown." "Why do you get to be the clown?" "Because I have range, Bill." He sighed and stepped into the dinosaur suit, zipping it to his chin. "This smells like somebody's nightmare." "That's the smell of professionalism." Molly applied a red foam nose. "Here's the plan. You distract the kids with your dance routine. While they're mesmerized—" "I don't have a dance routine." "Improvise. You're a dinosaur, just stomp menacingly." She mimed a robotic shuffle. "Meanwhile, I sneak to the gift table, load everything into the bouncy castle, then we deflate it and roll the whole thing out to the van." Bill stared at her through the dinosaur's mesh mouth. "We're stealing presents from a child." "We're stealing *unopened* presents," Molly corrected. "Which is basically a victimless crime. The kid never even knew what he was missing. We're saving him from disappointment." "That's the most twisted logic I've ever heard." "Thank you. Now, what's our exit code phrase?" Bill thought about it. "How about, 'Let's leave'?" "No, it needs to be subtle. Something only we'd recognize." Molly snapped her fingers. "If I yell 'Who wants cake?', that's your signal to grab the loot and run." "Everyone at a birthday party wants cake, Molly. You'll start a stampede." She paused. "Okay, fair. New code phrase. 'The piñata has spoken.'" "Nobody says that. Ever. In the history of language." "Exactly. It's untraceable." Bill flopped down onto a chair, the dinosaur tail flopping with him. "Remind me again why we don't just rob a bank like normal criminals?" "Because banks have security guards, alarms, and lasers." Molly tightened her clown wig. "A birthday party has a distracted dad with a spatula and a goodie bag policy. We're playing chess while everyone else plays checkers." "We're playing dress-up while everyone else eats hot dogs." "Same energy." She slapped the table. "Now get in the van, Mister Stompy. We've got a party to crash." Bill stood, the foam dinosaur creaking with every step. "If I get tackled by toddlers, I'm blaming you." "That's the spirit. Roar like you mean it."
created_at"2026-05-31T11:40:07.58Z" 5/31/2026, 11:40:07 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1122
moderation_latency(null)
generation_time21321
tokens_prompt77
tokens_completion821
native_tokens_prompt93
native_tokens_completion1172
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"
usage0.029765
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_0131pgSBbwUJZRoGEtPjkvq4"
is_byokfalse
latency1122
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-1780227607-BtycTYMpLbWCGmCKbO60"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227607-GwRo2orozsTx5u85Leb4"
upstream_id"msg_0131pgSBbwUJZRoGEtPjkvq4"
total_cost0.029765
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.98% Matches word count n/a
neededCleanfalse
words502
0.00% Dialogue to Total Word Ratio
Ratio: 73.18%, Deviation: 23.18%
neededCleanfalse
wordsTotal507
wordsDialogue371
49.9920%