Run: 2026-09-23-01M37PJZM7DJJ3P3Z2FC76HVPS

Run Details

Duration:
27.2s
Cost:
$0.049160
Provider:
Claude Platform on AWS

Evaluation summary

Score Evaluator
Details Link
98.71% Matches word count (details)
16.29% Dialogue to Total Word Ratio (details)
57.5023% 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 kitchen table and pinned its corners with four mugs of cold tea. It was not, strictly speaking, a blueprint. It was a birthday invitation shaped like a dinosaur, with a map drawn on the back in purple crayon. "Right," she said. "Saturday, two o'clock. Tobias Pemberton-Hale turns seven. Forty guests. Bouncy castle. And a present table, Bill. An entire table." Bill leaned over, squinting. "Is that a moat?" "That's the paddling pool." "Looks like a moat." "It's a paddling pool shaped like a moat, because Tobias is having a knights-and-dragons theme, which is why you'll be wearing this." She dropped a foam helmet in front of him. Bill picked it up by one floppy plume. It had the dignity of a wet sock. "Why am I the knight?" "Because I'm the entertainment." Molly produced a business card. "Magnifica the Marvellous. Balloon animals, card tricks, and a disappearing act." "You can't do magic." "I don't need to do magic. I only need to make one thing disappear, and it's the pile of gifts." Bill turned the helmet over, thinking. Thinking was a slow, visible process for Bill, like watching a kettle decide whether to bother. Eventually he set it down. "What's our getaway?" "Ice cream van. I've borrowed it from my cousin Derek." "Borrowed, or *borrowed*?" "He'll get it back. Mostly. The chimes are broken, so it only plays 'Greensleeves' at double speed." "That's not suspicious at all." "Nobody suspects an ice cream van, Bill. Children run toward it. Adults ignore it. Police buy a Fab and wave." He nodded, impressed despite himself. Then his face fell. "What about the mums?" Molly's jaw tightened. She had researched the mums. The mums were the real security system. One of them, a woman named Fiona, had once tackled a man in Waitrose over the last organic chicken, and she had RSVP'd yes. "The mums," Molly said carefully, "will be distracted by the prosecco fountain." "There's a prosecco fountain?" "There is now. I'm sending one as an anonymous gift." "That's generous." "It's tactical." She tapped the crayon map. "Four o'clock, cake gets cut. Every child sprints to the patio. That's our window. Ninety seconds. You load the presents into the moat." "The paddling pool." "The moat, Bill. Commit to the theme. Then we drag it out the side gate to the van." Bill was quiet for a long moment. Outside, a car alarm went off and stopped, as if embarrassed. "Molly," he said finally. "What if it's just socks?" "What?" "The presents. What if they're all socks and colouring books? My nan only ever gave me socks." Molly looked at the dinosaur invitation. She looked at the foam helmet. She thought about Fiona. "Bill," she said, "the Pemberton-Hales live on Chestnut Crescent. Nobody on Chestnut Crescent has ever given a child socks." He picked up the helmet and put it on. The plume flopped over one eye. "Then I'm in," he said.
created_at"2026-09-23T17:56:32.541Z" 9/23/2026, 5:56:32 PM
model"anthropic/claude-opus-5.5-20260921"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4774
moderation_latency(null)
generation_time27139
tokens_prompt75
tokens_completion1203
native_tokens_prompt95
native_tokens_completion2439
native_tokens_completion_images(null)
native_tokens_reasoning1320
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"
usage0.04916
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790186192-Uud41zylMHHkYDokBxV8"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790186192-X1LVFZSrAPYmNnnPxTsk"
upstream_id"msg_011CfLoWDFogZa1Tguey91x7"
provider_responses
0
endpoint_id"3a2388bc-3740-4e64-a1f5-4e301726b6b9"
id"msg_011CfLoWDFogZa1Tguey91x7"
is_byokfalse
latency1243
model_permaslug"anthropic/claude-opus-5.5-20260921"
provider_name"Claude Platform on AWS"
status200
total_cost0.04916
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
98.71% Matches word count n/a
neededCleanfalse
words494
16.29% Dialogue to Total Word Ratio
Ratio: 56.02%, Deviation: 6.02%
neededCleanfalse
wordsTotal498
wordsDialogue279
57.5023%