Run: 2026-05-29-01KSSJQYA8TK863R2KFBHSR4PY

Run Details

Duration:
20.0s
Cost:
$0.029715
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
99.38% Matches word count (details)
2.77% Dialogue to Total Word Ratio (details)
51.0715% 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 crumpled blueprint across the table, smoothing it with both palms. "Okay, here's the situation," she said. "Birthday party. Saturday. One o'clock sharp." Bill leaned in, squinting. "Whose birthday?" "Does it matter?" "It matters to me, Molly. I like to know whose childhood I'm ruining." "Some kid named Timmy. Turning seven." Bill whistled low. "Seven. That's a lot of presents." "Exactly. That's why we're hitting it." She tapped the paper. "Now, point of entry is the back gate, here. The bounce castle blocks the view from the kitchen window." "What about the parents?" "Distracted. There's always a clown." Bill straightened up, his face going pale. "A clown?" "Bill." "You didn't say anything about a clown, Molly. We talked about this." "I forgot you had the thing." "It's not a thing. It's a perfectly reasonable fear of grown men in face paint who carry balloons and laugh for no reason." Molly pinched the bridge of her nose. "Fine. I'll handle the clown. You handle the gift table." "And where's this gift table?" "Living room. By the window." She drew a circle. "Stack 'em, bag 'em, out the back. We're gone before they cut the cake." Bill frowned. "We're not staying for cake?" "We are robbing the party, Bill. We are not guests." "I'm just saying, it's a lot of effort to skip cake." "There will be no cake." He sulked for a moment, then perked up. "What about the loot? What are we even getting? Could be socks. Could be educational toys." "At a seven-year-old's party? Please. We're talking action figures, video games, maybe a tablet if the rich aunt shows up." "The rich aunt." Bill nodded slowly, reverently. "There's always a rich aunt." "Now you're getting it." "And the getaway?" "Parked around the corner. Tinted windows. I'll have the engine running." Bill chewed his lip. "There's gonna be a piñata, right?" "Probably. Why?" "Just thinking. While everybody's swinging at the piñata, eyes closed, blindfolded—nobody's watching the table." Molly paused, then pointed at him. "That's actually good." "I have moments." "You have moments approximately once a year." "And today's the day." He grinned. "So I create a distraction at the piñata, you neutralize the clown, we clear the table, we vanish." "Like ghosts." "Like ghosts who steal from children." Molly stood, rolling up the blueprint. "Any questions?" Bill raised his hand like a schoolboy. "Yeah. One." "What?" "If there happens to be cake, and it happens to be near the exit, and nobody's looking—" "Bill." "It's a hypothetical." "No cake." "You're a hard woman, Molly." "I'm a professional." She tucked the blueprint under her arm. "Saturday. One o'clock. Wear something forgettable." Bill glanced down at his bright orange shirt. "This is forgettable." "That shirt is a felony all by itself." "It brings out my eyes." "It'll bring out the witnesses." She headed for the door, then stopped. "And Bill?" "Yeah?" "Stay away from the clown." He shuddered. "Don't have to tell me twice."
created_at"2026-05-29T09:58:42.259Z" 5/29/2026, 9:58:42 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency954
moderation_latency(null)
generation_time19980
tokens_prompt77
tokens_completion841
native_tokens_prompt93
native_tokens_completion1170
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"
usage0.029715
router(null)
provider_responses
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endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01TYKYC9u1kt7rfLGBhuNEx3"
is_byokfalse
latency954
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-1780048722-F3U33G5ETxYOZADBcdXy"
session_id(null)
api_type"completions"
id"gen-1780048722-cDfPLjd7lcOwE52hCY3d"
upstream_id"msg_01TYKYC9u1kt7rfLGBhuNEx3"
total_cost0.029715
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
99.38% Matches word count n/a
neededCleanfalse
words495
2.77% Dialogue to Total Word Ratio
Ratio: 78.47%, Deviation: 8.47%
neededCleanfalse
wordsTotal497
wordsDialogue390
51.0715%