Run: 2026-05-31-01KSYXCJHBYZXD275SPEXV51VG

Run Details

Duration:
11.0s
Cost:
$0.015065
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)
90.71% Dialogue to Total Word Ratio (details)
95.3542% Overall

Model input

User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 10% 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 crouched behind the hydrangeas, binoculars trained on the bouncy castle wobbling in the suburban backyard. Streamers sagged from the gutters. A clown honked somewhere inside, sounding less festive than vaguely menacing. Beside her, Bill unrolled a hand-drawn map across his knees, smearing it with the cupcake frosting he'd stolen earlier as reconnaissance. "The presents are stacked by the piñata," he whispered. She nodded, scanning the perimeter. Two mothers guarded the snack table like prison wardens. A toddler armed with a juice box patrolled the gate, suspicious of everyone. Worst of all, a golden retriever named, according to the banner, Sir Barkington, dozed beside the gift mountain—wrapping paper glinting like treasure. Molly's plan was elegant. Bill would create a diversion by joining the limbo line, his criminal flexibility finally serving a purpose. Meanwhile she'd slip in disguised as the entertainment, having purchased a secondhand fairy costume that fit nobody comfortably. The wings alone could knock over a six-year-old. She checked her watch, then the cake, then her dignity, which had departed hours ago. "On three," she breathed. Bill swallowed nervously, adjusting his balloon-animal hat. Somewhere a child screamed about cake. Destiny called, frosted and ribboned, and the thieves answered.
created_at"2026-05-31T11:40:56.249Z" 5/31/2026, 11:40:56 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3437
moderation_latency(null)
generation_time10970
tokens_prompt77
tokens_completion406
native_tokens_prompt93
native_tokens_completion584
native_tokens_completion_images(null)
native_tokens_reasoning62
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"
usage0.015065
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01RdLm1oqLU5PSF6a2Qm7HFb"
is_byokfalse
latency1098
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-1780227656-UBIjyxMS63yYmeZ0DSuV"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227656-tV67pchawcH3fF8TpXZf"
upstream_id"msg_01RdLm1oqLU5PSF6a2Qm7HFb"
total_cost0.015065
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
words200
90.71% Dialogue to Total Word Ratio
Ratio: 4.41%, Deviation: 5.59%
neededCleanfalse
wordsTotal204
wordsDialogue9
95.3542%