NC Bench
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Run: 2026-02-16-01KHK9TDRP77196105JY0ZNE95
Run Details
Model:
GPT-5.1
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
48.0s
Cost:
$0.033842
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
The balloons bobbed against the hall ceiling as Molly and Bill crouched behind the recycling bins, studying the streamers and paper crowns like blueprints. From inside, a chorus of sugarcharged shrieks rattled the windows. Confetti already peppered the grass, evidence of an ongoing crime against upholstery. Molly balanced a dogeared notebook on her knee, diagrams of cake tables and gift pyramids scrawled in three colors of pen. Bill peered over the lid of the bin like a meerkat in a discount balaclava, which was actually a repurposed spider-man mask. Somewhere nearby, a clown honked mournfully, as if sensing incoming doom. "We're really about to knock over a birthday party, Bill?" "Relax, Molly; they're amateurs with wrapping paper, we're professionals with bags." "Professionals don't get taken down by a piƱata shaped like a unicorn." "That unicorn is our cover; while they beat candy out, we extract presents." "And when a toddler tackles you for touching his LEGO, then what's plan B?" "Plan B is scream, 'Clown emergency,' point vaguely, and let chaos do overtime." "Fine, but I'm not getting frosting on the gloves again; last job reeked." "Deal; you grab the bright stuff, I'll handle subtle items like cash envelopes quietly."
created_at
"2026-02-16T13:22:34.021377+00:00"
2/16/2026, 1:22:34 PM
model
"openai/gpt-5.1-20251113"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
6788
moderation_latency
(null)
generation_time
47823
tokens_prompt
77
tokens_completion
1286
native_tokens_prompt
66
native_tokens_completion
3376
native_tokens_completion_images
0
native_tokens_reasoning
3098
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
0.0338425
router
(null)
provider_responses
0
id
"resp_020aaea9d951fed201699319e95034819481bec9ffe377eb4e"
status
200
is_byok
false
latency
153
endpoint_id
"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5.1-20251113"
api_type
"completions"
id
"gen-1771248105-5yjPKAa09rR2s3WxQ1yS"
upstream_id
"resp_020aaea9d951fed201699319e95034819481bec9ffe377eb4e"
total_cost
0.0338425
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%