NC Bench
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Run: 2026-02-16-01KHK9RV7PCZ6487JCRP8HB9GE
Run Details
Model:
GPT-5.1
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
1m 23s
Cost:
$0.055322
Provider:
OpenAI
Model input
User/Human
You are a author of comedic heist books. Please write a 200 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
Messages
Meta
AI
Molly peered over the hedge at the bouncy castle next door and adjusted her ski mask decorated with unicorns. The sun was offensively cheerful for grand larceny. "We are seriously robbing a birthday party, Bill?" She kept her voice low, though the karaoke machine screeched off-key versions of nursery rhymes. Bill, crouched beside her in a suit patterned with balloons, grinned. "Think of it as redistributing unearned plastic wealth, Molly." He unfolded a glittery blueprint of the backyard. "You just want the robot dog that pees glitter." Molly poked his shoulder. "That toy has better engineering than my actual car." Bill shrugged. "What about security?" she asked. "Four parents, one clown, zero situational awareness." He pointed at each human obstacle. "You are underestimating the sugar high militia." Children zipped past, shrieking like feral kazoos. "That is why we bring decoy cupcakes and a smoke machine." Bill tapped their duffel bag. "Explain the plan, and do not say mission frosting." "Fine, Operation Gift Lift: in, grab, swap, out, no witnesses." "Swap with what, exactly, Bill?" "Pamphlets; their parents will love us." "These kids will hunt us for sport." Somewhere inside, a balloon popped like a starter pistol, and Molly finally smiled.
created_at
"2026-02-16T13:22:16.973921+00:00"
2/16/2026, 1:22:16 PM
model
"openai/gpt-5.1-20251113"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3736
moderation_latency
(null)
generation_time
83098
tokens_prompt
77
tokens_completion
958
native_tokens_prompt
66
native_tokens_completion
5524
native_tokens_completion_images
0
native_tokens_reasoning
5228
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.0553225
router
(null)
provider_responses
0
id
"resp_01c5763f480bd4e401699319b594248195812d002ee2c72d59"
status
200
is_byok
false
latency
176
endpoint_id
"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5.1-20251113"
api_type
"completions"
id
"gen-1771248053-HT4u8C8N2pkeq0PCX132"
upstream_id
"resp_01c5763f480bd4e401699319b594248195812d002ee2c72d59"
total_cost
0.0553225
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
99.9990%
Matches word count
n/a
neededClean
false
words
201
100.0000%
Dialogue to Total Word Ratio
Ratio: 49.75%, Deviation: 0.25%
neededClean
false
wordsTotal
201
wordsDialogue
100
99.9995%