NC Bench
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Run: 2026-02-20-01KHY8HXXX7KKRDDBYV0BTY679
Run Details
Model:
Grok 4 Fast
Test:
Dialogue tags
Scenario:
Write 200 words with 90% dialogue
Duration:
4.3s
Cost:
$0.000282
Provider:
xAI
Evaluation summary
Score
Evaluator
Details Link
2.01%
Matches word count
(details)
2.15%
Dialogue to Total Word Ratio
(details)
2.0788%
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 kitchen table in their dingy apartment, a crumpled party invitation spread out like a treasure map. Bill paced, twirling a lockpick like a baton. "Listen, Bill," Molly said, eyes gleaming. "It's perfect. Rich kid's birthday bash at the mansion. Balloons, cake, and a mountain of presents—unwrapped, so no fuss. We slip in dressed as clowns, grab the loot, and vanish before the piñata bursts." Bill snorted, stopping to gawk. "Clowns? Molly, you couldn't juggle a beach ball without dropping it. And kids? They'll swarm us like piranhas. What if one bites?" She waved him off. "We'll stuff our faces with face paint and fake noses. You do the silly walk, I'll distract with balloon animals. Swipe the big boxes—Xbox, bikes, that pony statue thing. Easy peasy." "Pony statue? That's not a present, that's yard art!" Bill groaned, rubbing his temples. "And the parents? Snooty types with security cams. One wrong honk on that clown horn, and we're busted faster than a bad magic trick." Molly grinned wickedly. "That's why we go at cake time—chaos city. Kids hyped on sugar, adults tipsy on punch. We'll be ghosts in greasepaint. Richest haul since that bakery caper." Bill sighed, smirking. "Fine, but if a toddler tackles me, you're bribing the cop with leftover cupcakes." "Deal," she laughed. "To the clown car!"
created_at
"2026-02-20T19:31:17.064Z"
2/20/2026, 7:31:17 PM
model
"x-ai/grok-4-fast"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2090
moderation_latency
(null)
generation_time
3804
tokens_prompt
77
tokens_completion
350
native_tokens_prompt
216
native_tokens_completion
542
native_tokens_completion_images
0
native_tokens_reasoning
224
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
0.00028195
router
(null)
provider_responses
0
endpoint_id
"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id
"963c2838-a404-5cee-3a08-d5c1b511ddf2"
is_byok
false
latency
949
model_permaslug
"x-ai/grok-4-fast"
provider_name
"xAI"
status
200
api_type
"completions"
id
"gen-1771615877-71NlxqHQcET7sqItMyae"
upstream_id
"963c2838-a404-5cee-3a08-d5c1b511ddf2"
total_cost
0.00028195
cache_discount
0.00003225
upstream_inference_cost
0
provider_name
"xAI"
Evaluation details
Result
Evaluator
Details
Meta Data
2.01%
Matches word count
n/a
neededClean
false
words
225
2.15%
Dialogue to Total Word Ratio
Ratio: 76.00%, Deviation: 14.00%
neededClean
false
wordsTotal
225
wordsDialogue
171
2.0788%