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Run: 2026-06-01-01KT1H6DAVKQZXP3BV286P7MJW
Run Details
Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Dialogue tags
Scenario:
Write 500 words with 70% dialogue
Duration:
22.0s
Cost:
$0.029440
Provider:
Anthropic
Evaluation summary
Score
Evaluator
Details Link
81.27%
Matches word count
(details)
0.50%
Dialogue to Total Word Ratio
(details)
40.8888%
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 crinkles with theatrical reverence. "Behold," she said. "The Hendersons' backyard. Site of Timmy's seventh birthday extravaganza." Bill squinted at the paper. "That's a napkin." "It's a *tactical* napkin. I sketched it from the bushes." "You were in their bushes?" "For reconnaissance, Bill. Now focus." She tapped the napkin. "Twelve children. One bouncy castle. And a mountain of unguarded presents." Bill leaned back, arms crossed. "Molly, we robbed a casino last month. We're really doing children's birthday parties now?" "That casino was a disaster. You set off the sprinklers." "I panicked!" "You panicked because a *waiter* looked at you funny." She jabbed a finger toward the napkin again. "This is foolproof. Kids don't call the cops. They cry, sure, but crying isn't admissible in court." "I don't love stealing from children." "We're not stealing from children, we're stealing from their *parents' poor financial decisions.* Did you know the average kid gets forty dollars of presents they'll forget about by Tuesday? We're practically doing them a favor. Teaching them about loss. Building character." Bill rubbed his temples. "What's the plan?" "So glad you asked." Molly produced a second napkin. "You'll be the entertainment. A clown." "Absolutely not." "A *magician,* then." "Molly—" "You distract the children with cheap card tricks while I, disguised as a caterer, load the presents into the minivan." "We don't have a minivan." "We'll steal a minivan." "So now we're stealing *two* things." "It's a layered operation, Bill. Heists have layers. Like onions. Or that lasagna we couldn't afford because *somebody* set off the sprinklers." Bill held up a hand. "Okay. Say I'm the magician. What if a kid asks me to do an actual trick?" "Pull a coin from his ear." "And if I don't have a coin?" "Pull *lint* from his ear. Children are stupid. They'll applaud." "That's offensive to children." "Everything's offensive to someone, Bill. That's why we work alone." She rolled up the napkins and tucked them into her jacket. "We strike at three o'clock. Cake time. Maximum distraction. Every adult will be busy pretending the store-bought sheet cake is homemade." Bill sighed the sigh of a man who had made several poor life choices in a row. "And the getaway?" "We bounce." "We *what?*" "The bouncy castle. It deflates. We hide inside, they pack it up, transport us off-site, and we emerge like heist butterflies." "That is the dumbest plan I have ever heard." "It's *avant-garde.*" Bill stood, grabbing his coat. "Fine. But if I get attacked by a seven-year-old, I'm retiring." "Noted." Molly beamed. "Oh, and Bill?" "What?" "Wear something festive. We're professionals." He paused at the door. "Molly, we're stealing presents from a child named Timmy." "And Timmy," she said solemnly, "will grow up stronger for it. One day he'll thank us." "He'll never know we existed." "The best thieves never do." She winked. "Now go practice your lint trick."
created_at
"2026-06-01T12:05:34.687Z"
6/1/2026, 12:05:34 PM
model
"anthropic/claude-4.8-opus-20260528"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1221
moderation_latency
(null)
generation_time
21933
tokens_prompt
77
tokens_completion
829
native_tokens_prompt
93
native_tokens_completion
1159
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
0.02944
router
(null)
provider_responses
0
endpoint_id
"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id
"msg_011x1CHVn2b6TMNq6Vy1unYh"
is_byok
false
latency
1221
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-1780315534-S8JUDB0ic7Gc57EREwoe"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1780315534-yBelDndItSkn3HihjST8"
upstream_id
"msg_011x1CHVn2b6TMNq6Vy1unYh"
total_cost
0.02944
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
81.27%
Matches word count
n/a
neededClean
false
words
488
0.50%
Dialogue to Total Word Ratio
Ratio: 80.28%, Deviation: 10.28%
neededClean
false
wordsTotal
492
wordsDialogue
395
40.8888%