Run: 2026-09-23-01M37PXHN5HNXAWC2ZJS2A09PB

Run Details

Duration:
19.5s
Cost:
$0.023240
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
99.38% Matches word count (details)
47.17% Dialogue to Total Word Ratio (details)
73.2725% 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 hood of the stolen ice cream van and pinned one corner down with a half-eaten corn dog. Bill squinted at it for a long time. "This is a drawing of a bouncy castle," he said. "It's a floor plan of a bouncy castle," Molly corrected. "Big difference. Floor plans are professional." Bill turned his head sideways, as if that might reveal hidden depths in the crayon. The sun was setting over the cul-de-sac, painting the tidy lawns orange, and somewhere behind a white picket fence, a banner fluttered in the breeze: HAPPY 7TH BIRTHDAY TOBY. "Walk me through it again," Bill said. "Fourteen kids. Two parents. One clown named Mr. Giggles, who I've already bribed with a pack of cigarettes and a vague promise." Molly tapped the drawing. "The presents are stacked on a table beside the castle. We go in disguised as the entertainment, wait for the cake, and when everyone's distracted singing, we grab the loot and run." "What are we disguised as?" Molly reached into the van and pulled out a pair of costumes. One was a purple dinosaur. The other was a slightly smaller purple dinosaur. Bill stared at them. "Molly, I did eight years in Blackgate. I once cracked a vault using nothing but a paperclip and a strong sense of self-worth." "And now you'll crack it as Dino-Dave. Your backstory's on an index card in the tail." Bill took the costume and held it at arm's length, the way one might hold a live eel. The foam head gazed up at him with enormous, trusting eyes. He sighed the sigh of a man whose career had gone badly wrong somewhere around age thirty. "What's the haul, anyway? Worth it?" "Worth it?" Molly pulled out a crumpled list. "I intercepted the RSVPs. We're looking at three remote-control helicopters, a limited edition Lego pirate ship, and somebody's grandmother is giving that kid a savings bond." "A savings bond?" Bill gasped. "That's basically a bearer instrument." "Exactly. Plus, there's a goody bag for every guest." "We're not taking the goody bags." "We are absolutely taking the goody bags, Bill. Nobody leaves a birthday party empty-handed. That's just manners." Across the street, the front door opened. A small boy in a paper crown sprinted onto the lawn, screaming at a pitch that sent a nearby cat straight up a tree. Four more children followed, then six, then what appeared to be a flood of sugar-fueled chaos in miniature sneakers. Bill's face went pale beneath the streetlight. "There's more than fourteen," he whispered. "Stay calm." "One of them has a water gun, Molly." "They can smell fear, so don't give them any." A tiny girl stopped on the sidewalk, pointed directly at the van, and shrieked, "DINOSAURS!" Every child froze. Then, slowly, like a pack of wolves spotting a limping deer, they turned. Molly zipped up her costume with grim determination. "Change of plan," she said. "We run."
created_at"2026-09-23T18:02:18.678Z" 9/23/2026, 6:02:18 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4013
moderation_latency(null)
generation_time19416
tokens_prompt75
tokens_completion760
native_tokens_prompt95
native_tokens_completion1143
native_tokens_completion_images(null)
native_tokens_reasoning56
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"
usage0.02324
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790186538-dOdNGQzJeTGeYW6SOM4d"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790186538-eLnNjg9s1ShmLP4EowdE"
upstream_id"msg_011CfLowjA5x3U6rYyQea6Ct"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLowjA5x3U6rYyQea6Ct"
is_byokfalse
latency1164
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.02324
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
99.38% Matches word count n/a
neededCleanfalse
words495
47.17% Dialogue to Total Word Ratio
Ratio: 46.12%, Deviation: 3.88%
neededCleanfalse
wordsTotal503
wordsDialogue232
73.2725%