Run: 2026-05-29-01KSSK2WC9HSPJTEA2GXJ8J7NP

Run Details

Duration:
19.6s
Cost:
$0.027240
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
86.38% Matches word count (details)
0.00% Dialogue to Total Word Ratio (details)
43.1902% 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 kind of reverence usually reserved for ancient treasure maps. In reality, it was a hand-drawn diagram of the Hendersons' backyard, complete with a poorly sketched bouncy castle and a stick figure labeled "CLOWN—DANGER." Bill leaned over her shoulder, chewing a toothpick with theatrical menace. He'd seen it in a movie once and had been doing it ever since, despite Molly's repeated complaints that it made him look like he was perpetually flossing. "The presents arrive at noon," she said, tapping the table. "By twelve-thirty, that gift table will be loaded. PlayStations, LEGO sets, possibly an iPad if little Timmy's grandparents are feeling generous." "And we just walk in and grab them?" "No, Bill. We blend in. We become part of the environment." He squinted at the diagram. "I'm forty-three years old. How exactly do I blend in at a six-year-old's birthday party?" Molly slid a folded paper bag across the table. He opened it, then immediately closed it. "Absolutely not." "It's a balloon-animal costume. You'll be the entertainment. Nobody questions a man making giraffes out of balloons." "I don't know how to make giraffes." "Then make snakes. A snake is just a balloon you didn't twist. Children have low standards, Bill. They eat glue." He grumbled but tucked the bag under his arm. "And what's your cover?" Molly produced a clipboard from thin air, the way she always did, which Bill found deeply unsettling. "I'm the party planner. Officious, important, holding a clipboard. The trifecta of invisibility. People assume anyone with a clipboard belongs." "That's actually genius." "I know. The plan is simple. While you distract the children with your tragic balloon snakes, I'll be loading presents into the catering van parked by the back gate." Bill frowned. "We have a catering van?" "We have a van. I wrote 'CATERING' on the side with a marker." "Did you spell it right this time?" There was a long, dangerous silence. "It's fine," Molly said. "Nobody reads. That's the beauty of this whole operation." She rolled up the blueprints with a flourish and stood, pacing the kitchen like a general before battle. Bill watched her, the toothpick drooping from his mouth. "There's one thing bothering me," he said. "Only one? You're growing." "What if the kids cry? When the presents disappear. I don't think I can handle the crying, Molly. I have a soul somewhere. I'm pretty sure I left it in a locker at the bus station, but it exists." Molly placed a comforting hand on his shoulder, her expression softening into something almost maternal. "Bill," she said gently, "they're rich kids. They'll get more presents tomorrow. Probably a pony. We're practically teaching them a valuable lesson about loss." He considered this. The toothpick rose again, hopeful. "You're right. We're basically educators." "Exactly. Now go practice your snakes. The future of crime depends on it."
created_at"2026-05-29T10:04:40.723Z" 5/29/2026, 10:04:40 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1405
moderation_latency(null)
generation_time19605
tokens_prompt77
tokens_completion795
native_tokens_prompt93
native_tokens_completion1071
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"
usage0.02724
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01FUbhj2pb1EbqFLySswS147"
is_byokfalse
latency1405
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-1780049080-KfoS6zsO1Q79SRMYFEsC"
session_id(null)
api_type"completions"
id"gen-1780049080-eSpqZrD0pabOFyKim3HK"
upstream_id"msg_01FUbhj2pb1EbqFLySswS147"
total_cost0.02724
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
86.38% Matches word count n/a
neededCleanfalse
words489
0.00% Dialogue to Total Word Ratio
Ratio: 61.82%, Deviation: 31.82%
neededCleanfalse
wordsTotal495
wordsDialogue306
43.1902%