NC Bench
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Run: 2026-02-20-01KHY8FT1G38CZKMDFZFV0AWBC
Run Details
Model:
Grok 4 Fast
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
5.2s
Cost:
$0.000279
Provider:
xAI
Evaluation summary
Score
Evaluator
Details Link
20.19%
Matches word count
(details)
7.25%
Dialogue to Total Word Ratio
(details)
13.7209%
Overall
Model input
User/Human
You are a author of comedic heist books. Please write a 200 word scene that has 90% 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 hunched over the rickety kitchen table in their dimly lit apartment, blueprints of the upscale community center spread out like a treasure map. Bill paced, twirling a fake mustache. "Okay, Molly, hit me with the plan. Kids' birthday bash—prime target for swiping those shiny presents. Balloons, cake, chaos. Perfect cover." Molly grinned, circling a spot on the map. "Right. We crash as party clowns. I'll be 'Jiggles the Jester,' you 'Boom-Boom the Balloon Man.' Sneak in at 2 PM, when the rugrats are hyped on sugar. Distract with pratfalls while you stuff the gift pile into duffel bags hidden in the bounce house." Bill snorted. "Bounce house? Genius, but what if some pint-sized detective spots us? 'Hey, mister, why's your balloon sack jingling with Barbies?'" "Improvise! Yell 'Magic trick!' and vanish into the piñata pile. We hit the exits at 2:30, before the piñata explodes and buries us in candy evidence. Load the getaway van disguised as the ice cream truck—free scoops for alibis." Bill laughed, slapping the table. "Alibis? We're pros. But if we snag that diamond-encrusted teddy bear from the rich kid's stack, we're golden. Just don't trip over a toddler on the way out." "Deal. Operation Present Pilfer—let's make it a birthday they'll never forget." Molly winked, folding the map.
created_at
"2026-02-20T19:30:07.548Z"
2/20/2026, 7:30:07 PM
model
"x-ai/grok-4-fast"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3056
moderation_latency
(null)
generation_time
5048
tokens_prompt
77
tokens_completion
339
native_tokens_prompt
216
native_tokens_completion
536
native_tokens_completion_images
0
native_tokens_reasoning
216
native_tokens_cached
215
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
0.00027895
router
(null)
provider_responses
0
endpoint_id
"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id
"c0e5e852-2533-3141-46df-b3c3c142f545"
is_byok
false
latency
1848
model_permaslug
"x-ai/grok-4-fast"
provider_name
"xAI"
status
200
api_type
"completions"
id
"gen-1771615807-mAqA5EQ9gSOa6x55fzra"
upstream_id
"c0e5e852-2533-3141-46df-b3c3c142f545"
total_cost
0.00027895
cache_discount
0.00003225
upstream_inference_cost
0
provider_name
"xAI"
Evaluation details
Result
Evaluator
Details
Meta Data
20.19%
Matches word count
n/a
neededClean
false
words
220
7.25%
Dialogue to Total Word Ratio
Ratio: 77.27%, Deviation: 12.73%
neededClean
false
wordsTotal
220
wordsDialogue
170
13.7209%