Run: 2026-05-31-01KSYXM3EV5XTCY5QNZHCNAPM3

Run Details

Duration:
20.6s
Cost:
$0.028515
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.92% Matches word count (details)
0.12% Dialogue to Total Word Ratio (details)
50.0220% Overall

Model input

User/Human
You are a author of comedic heist books. Please write a 500 word scene that has 70% 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 crayon-drawn map across the table and tapped it with authority. "Okay, Bill, focus. The target is a seventh birthday party. Theme is, and I quote the invitation we intercepted, 'Dinosaurs and Princesses.'" "That's two themes," Bill said. "That's chaos. No commitment." "Stay on mission. The presents will be stacked on a table here, by the bouncy castle." "A bouncy castle." Bill leaned back, crossing his arms. "Molly, I don't like bouncy castles. They're unstable. Untrustworthy. My cousin lost a tooth in one." "Nobody is asking you to enter the bouncy castle." "I'm just establishing my boundaries." "Noted. Now, the way I see it, we go in dressed as entertainers. You'll be the magician, I'll be the face painter." Bill's eyebrows shot up. "Why do you get to be the face painter?" "Because you can't draw, Bill. You tried to sketch the getaway route and it looked like a sad worm." "That worm had ambition." "The point is, while you distract the children with card tricks, I grab the presents and load them into the van disguised as the ice cream truck." "Wait." Bill held up a hand. "If we're an ice cream truck, the kids are going to want ice cream." Molly paused. "We give them ice cream. It enhances the cover." "With what money? We're stealing presents because we're broke!" "It's an investment, Bill." "You can't run a heist and a small business simultaneously!" "Lower your voice." Molly glanced at the window. "Now, the only real obstacle is the mother. Her name is Karen—" Bill snorted. "Of course it is." "—and she runs that household like a military operation. Snacks rotated every fifteen minutes. Goody bags inventoried. She will notice if presents go missing." "So what's the plan?" "We replace them. We bring decoy presents. Empty boxes wrapped beautifully. By the time anyone opens them, we're three counties away, eating gas-station nachos like kings." Bill considered this. "That's actually... not terrible." "Don't sound so surprised." "I'm just saying, usually your plans involve more crying. Mine or yours." "This plan is foolproof." Molly straightened. "There is only one variable I can't control." "Which is?" "The clown." Bill froze. "There's a clown?" "Karen hired a professional. Goes by 'Mr. Giggles.' Allegedly very territorial about his audience." "Molly, I am not getting into a turf war with a clown." "You won't have to, as long as you stick to balloon animals and don't oversell the magic." "What if he challenges me?" "Then you challenge him back. You're a professional. Sort of." Bill stood, suddenly resolute. "You know what? Fine. Let's do it. For the presents. For the nachos." "For the nachos," Molly agreed. "One question." "Yes?" "Can I keep one present? Just one. The big shiny one." Molly stared at him for a long moment. "You want a child's toy." "I want to feel something, Molly." She sighed, rolling up the crayon map. "Fine. One present. But if it's a doll, I'm telling everyone." "Deal."
created_at"2026-05-31T11:45:02.954Z" 5/31/2026, 11:45:02 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1125
moderation_latency(null)
generation_time20598
tokens_prompt77
tokens_completion818
native_tokens_prompt93
native_tokens_completion1122
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"
usage0.028515
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01YNCqc1EfGS45oDUiSnRFLy"
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-1780227902-lbQvejo7C88tk5cqEbGk"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227902-b8zRWOu8bQujAPo2e820"
upstream_id"msg_01YNCqc1EfGS45oDUiSnRFLy"
total_cost0.028515
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
0.12% Dialogue to Total Word Ratio
Ratio: 81.56%, Deviation: 11.56%
neededCleanfalse
wordsTotal499
wordsDialogue407
50.0220%