Run: 2026-05-31-01KSYXJ8M2AJWYQVV4V3D5GQHQ

Run Details

Duration:
21.0s
Cost:
$0.028465
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)
0.00% Dialogue to Total Word Ratio (details)
50.0000% 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
Bill spread the crinkled blueprint across the table, smoothing it with the reverence of a man unveiling the Mona Lisa. "Behold," he said. "The Henderson residence. Site of one Timmy Henderson's eighth birthday party." Molly leaned in, squinting. "Bill, this is a drawing of a house. A child drew this." "I commissioned it from a reliable source." "The reliable source used a crayon. There's a sun with sunglasses in the corner." "Aurora," Bill said with dignity, "is seven and the best inside operative we've got. Now focus. The presents accumulate here, on the gift table, between two and four PM." Molly crossed her arms. "And how exactly do two grown adults blend into a children's birthday party?" "Disguises." Bill produced a paper bag and dumped its contents triumphantly. A clown wig. A unicorn onesie. A mustache. "That's a mustache." "For me." "You'll be a mustached man lurking at a child's party. They'll arrest you before you reach the cake." Bill waved this away. "Details. The plan is foolproof. You distract with balloon animals while I commandeer the gift table." "I can't make balloon animals." "You make a balloon. Call it a snake. Children are not critics." Molly picked up the unicorn onesie, holding it at arm's length like it might bite. "And I'm assuming this monstrosity is mine?" "It conveys whimsy. Trust. You'll be one of them." "I'm five foot nine, Bill. I will be a horrifying giant unicorn. The children will scream." "Screaming is chaos. Chaos is cover." He tapped the blueprint. "We're in, we're out, we're rich. Do you know what people spend on eight-year-olds now? iPads. Drones. There's a kid getting a *pony*, Molly." "We can't fit a pony in the getaway car." "The pony is symbolic of the wealth involved." Molly sighed and sat down. "Walk me through the exit." "Simple. Once the presents are bagged, I signal you with the secret word." "Which is?" "'Piñata.'" "Bill, there will be an *actual* piñata. You'll say 'piñata' and forty children will swarm a papier-mâché donkey while I stand there in a unicorn costume holding a bag of stolen Legos." A long silence settled over the table. Bill stroked his chin thoughtfully. "The contingency plan," he said slowly, "accounts for that." "There's a contingency plan?" "There is now. New signal word. 'Asparagus.' No child has ever gotten excited about asparagus." Molly stared at him for a long moment, then, against every instinct she possessed, felt the corner of her mouth twitch. "This is the dumbest job we've ever planned." "And yet," Bill said, sliding the clown wig toward her, "you haven't left." She picked up the wig, turning it over in her hands. "If I do this—*if*—I want fifty percent and you wear the unicorn." "Sixty percent and you wear the unicorn." "Fifty-five, and we never speak of the mustache again." Bill extended a hand across the table, beaming. "Molly, my dear, we're going to ruin a child's birthday." "It's the only thing we've ever been good at."
created_at"2026-05-31T11:44:02.704Z" 5/31/2026, 11:44:02 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1032
moderation_latency(null)
generation_time20943
tokens_prompt77
tokens_completion804
native_tokens_prompt93
native_tokens_completion1120
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
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web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.028465
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01UaZG22ZiLq75sKE3ogtJqF"
is_byokfalse
latency1032
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-1780227842-NN8MZO9NZk4XuHTASaX0"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227842-QSoamYZ3cqJJNNTj5QLN"
upstream_id"msg_01UaZG22ZiLq75sKE3ogtJqF"
total_cost0.028465
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
words500
0.00% Dialogue to Total Word Ratio
Ratio: 71.63%, Deviation: 21.63%
neededCleanfalse
wordsTotal504
wordsDialogue361
50.0000%