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Run: 2026-06-01-01KT1HYR3PS3Y2D0S5TMZCXX93
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write 500 words with 70% dialogue
Duration:
21.0s
Cost:
$0.028790
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
98.71%
Matches word count
(details)
5.37%
Dialogue to Total Word Ratio
(details)
52.0424%
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
Messages
Meta
AI
Molly spread the blueprint across the table, smoothing out the wrinkles with theatrical precision. "Behold," she said. "The Henderson residence. Site of one Timmy Henderson's seventh birthday party." Bill squinted at the paper. "That's a child's drawing of a house." "It's reconnaissance." "There's a sun wearing sunglasses in the corner." "Timmy has artistic flair. Focus, Bill." She tapped the page. "The presents will be stacked here, by the cake table. We go in, we grab the loot, we're out before they finish singing 'Happy Birthday.'" Bill crossed his arms. "I'm not robbing a seven-year-old." "We're not robbing him. We're robbing his *guests*. Twenty kids, twenty presents. Do you know what kids get these days? iPads. Drones. One of these brats is probably getting a pony." "You can't fit a pony in a getaway car." "It's a metaphorical pony, Bill." "I don't even know what that means." Molly sighed and pulled out a second sheet. "Here's the plan. You'll go in disguised as the entertainment. A clown." Bill's face drained of color. "Absolutely not. I have a documented fear of clowns." "You *are* the clown." "That doesn't help! That makes it worse! I'll be afraid of myself!" "While you distract the children with your tortured psyche," Molly continued, "I slip in through the back posing as a caterer. I locate the present pile, load everything into the bouncy castle—" "The bouncy castle?" "It deflates. We drag it out like a sack. Genius, right?" Bill rubbed his temples. "Molly, these are children. They cry. They have those little faces." "Which is exactly why this works. Nobody suspects the clown. Nobody pats down the caterer. We're invisible." She leaned in. "And the parents? Loaded. Did you see the invitation? Embossed. Who embosses a birthday invitation?" "Someone with too much money and not enough sense." "Exactly our demographic." Bill picked up the blueprint again, studying the crayon sun. "What about security?" "The Hendersons hired a magician. That's it. One man. With doves." "Doves are unpredictable." "You're afraid of doves now?" "I'm afraid of a *lot* of birds, Molly, and I won't apologize for it." She slid a red foam nose across the table. "Put it on." Bill stared at it like it was a live grenade. "And after we get the presents?" "We sell them. Mint condition toys, still in the packaging? Collectors go feral for that stuff. We could clear ten grand." "Ten grand," Bill repeated softly. "Ten grand and not a single grown-up gets hurt." "Just the emotional well-being of two dozen innocent children." Molly waved a hand. "Builds character. Disappointment is a crucial part of childhood. We're practically doing them a favor." Bill picked up the foam nose, turning it over in his fingers. "If I do this, I want a real wig. Not the cheap one. The cheap one makes my scalp itch." A slow grin spread across Molly's face. "Bill, my friend, for this job? You'll have the finest synthetic hair money can steal." He squeezed the nose. It honked. "God help us," he muttered.
created_at
"2026-06-01T12:18:52.155Z"
6/1/2026, 12:18:52 PM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1054
moderation_latency
(null)
generation_time
20996
tokens_prompt
77
tokens_completion
818
native_tokens_prompt
93
native_tokens_completion
1133
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.02879
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_01GiaYbci63k8kToUKnqjQ8T"
is_byok
false
latency
1054
model_permaslug
"anthropic/claude-4.8-opus-20260528"
provider_name
"Anthropic"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer
(null)
request_id
"req-1780316332-KJEni1utl8y6chOE2L4o"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780316332-fUB3tmpDAmi1DnTcDV0c"
upstream_id
"msg_01GiaYbci63k8kToUKnqjQ8T"
total_cost
0.02879
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
98.71%
Matches word count
n/a
neededClean
false
words
506
5.37%
Dialogue to Total Word Ratio
Ratio: 77.65%, Deviation: 7.65%
neededClean
false
wordsTotal
510
wordsDialogue
396
52.0424%