Run: 2026-07-25-01KYCR36MQ17JQ5QJ9RYXZJ150

Run Details

Duration:
22.0s
Cost:
$0.029240
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
9.61% Matches word count (details)
0.51% Dialogue to Total Word Ratio (details)
5.0615% 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 napkin across the diner table and smoothed it flat with the side of her hand like it was a blueprint, which, as of ninety seconds ago, it was. "That's the bouncy castle," she said, tapping a blob of gravy. "That's a stain." "It's both. Bouncy castle here, buffet table here, presents stacked on the piano in the conservatory. Twenty-two children, four adults, one clown." Bill set down his coffee. "One clown." "His name is Mr. Bubbles. He does not have a license." "To drive?" "To be a clown. There's a registry, Bill. He's not on it." "So we're robbing children," Bill said, "and the moral high ground is that the clown is unregistered." "The moral high ground is that Fiona Duckworth-Pyle is turning seven and her parents have invited every family within four postcodes with an income over two hundred grand. There will be a present pile the size of a Fiat. There will be gift bags containing actual silver. Last year a child received a pony." "How do you steal a pony?" "You don't. You lead it. That's the beauty of a pony." Molly stole one of his chips. "But we're not after the pony this time. Too much paperwork." "And the plan is what, exactly? We walk in the front door?" "You walk in the front door. Dressed as Mr. Bubbles." Bill went very still. "No." "Bill—" "The last time I wore face paint I broke out for eleven days and a woman in Tesco asked if I was contagious." "You'll wear a base coat." "I'll wear a base coat," he repeated, hollow. "And what are you doing while I'm blowing up balloon giraffes for the children of hedge fund managers?" "Balloon dachshunds. Giraffes are advanced. I'll be in the conservatory with a duvet cover, working quietly and efficiently, while you keep twenty-two seven-year-olds entertained for eleven minutes." "Eleven minutes." "Nine if you're good." "Molly, I have never been good with children. I made my own nephew cry at a christening." "You dropped him." "I *caught* him. Eventually. The point is, children can smell fear, and I am *made* of it." He picked up the napkin and studied the gravy. "What if one of them wants a swan?" "Then you tell them the swan is a protected species and it would be illegal to make one out of a balloon." Bill thought about it. "That's actually quite good." "I know. Now the exit. There's a side gate behind the hydrangeas, unlocked, because the caterers use it. You'll hear me whistle." "Whistle what?" "Happy Birthday." "Everyone will be whistling Happy Birthday." "Not in D minor," Molly said. "Trust me, you'll know." Bill exhaled slowly, the long exhale of a man who has already agreed and is now just grieving. "And if it goes wrong?" "It won't." "But if." "Then you run," said Molly, "in enormous shoes, and I meet you at the car, and we never speak of Mr. Bubbles again." "Deal." Bill drained his coffee. "I want it noted that I'm doing this under protest." "Noted." Molly folded the napkin into her pocket. "Wear the wig, Bill."
created_at"2026-07-25T13:40:35.615Z" 7/25/2026, 1:40:35 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2945
moderation_latency(null)
generation_time21919
tokens_prompt75
tokens_completion802
native_tokens_prompt93
native_tokens_completion1151
native_tokens_completion_images(null)
native_tokens_reasoning38
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"
usage0.02924
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsTFRyDwUS42nWRRx5c"
is_byokfalse
latency1253
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784986835-y2bPgbWirQjCEMRIkOoo"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986835-42V9CXg6MQojy7qP7hdI"
upstream_id"msg_011CdNsTFRyDwUS42nWRRx5c"
total_cost0.02924
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
9.61% Matches word count n/a
neededCleanfalse
words522
0.51% Dialogue to Total Word Ratio
Ratio: 80.27%, Deviation: 10.27%
neededCleanfalse
wordsTotal527
wordsDialogue423
5.0615%