NC Bench
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Run: 2026-02-20-01KHY9FFWPBRT5ECW1SANR1FBK
Run Details
Model:
Grok 4.1 Fast
Test:
Dialogue tags
Scenario:
Write 200 words with 50% dialogue
Duration:
9.0s
Cost:
$0.000343
Provider:
xAI
Evaluation summary
Score
Evaluator
Details Link
99.38%
Matches word count
(details)
87.09%
Dialogue to Total Word Ratio
(details)
93.2331%
Overall
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 and Bill crouched in the shadows of their beat-up van, binoculars trained on the garish backyard across the street. Balloons bobbed like drunken sentinels, and a bounce house loomed like a pink whale. The blueprint of the McSnooty mansion sprawled between them, marked with crayon scribbles. "Bill, it's perfect," Molly whispered, eyes gleaming. "Rich kid's fifth birthday. Presents stacked to the ceiling—Xboxen, bikes, gold-plated Legos. We hit at cake time, kids distracted." Bill mopped his brow, glancing at the piñata dangling like a candy-filled piñata of doom. "Kids, Molly? They're tiny landmines! One tantrum and we're swarmed. What if they bite?" She slapped the blueprint. "Disguises! You as the clown, me as the magician. I saw the rabbit out of the hat, you juggle the swag bags into our van." "Juggle? I can barely juggle my debts!" Bill yelped. "And the parents? Snooty types with tasers in their tutus." "Distraction: Fake fire in the bounce house. Chaos! We grab the gift table, bolt. Fifty grand resale, easy." Bill sighed, grinning despite himself. "Fine. But if a kid cries, you're the bad cop." Molly high-fived him. "Deal. Operation Candy Heist launches at three." The van rumbled to life, headlights off.
created_at
"2026-02-20T19:47:25.731Z"
2/20/2026, 7:47:25 PM
model
"x-ai/grok-4.1-fast"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
259
moderation_latency
(null)
generation_time
8894
tokens_prompt
77
tokens_completion
391
native_tokens_prompt
216
native_tokens_completion
644
native_tokens_completion_images
0
native_tokens_reasoning
342
native_tokens_cached
151
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
0.00034255
router
(null)
provider_responses
0
endpoint_id
"9821aa0e-dce3-4c27-9716-161359123d0b"
id
"ddbbe0a9-4a24-2ce4-5ec4-d2f9a668c358"
is_byok
false
latency
52
model_permaslug
"x-ai/grok-4.1-fast"
provider_name
"xAI"
status
200
api_type
"completions"
id
"gen-1771616845-mDs3sI1BxCCDuw8NSbVH"
upstream_id
"ddbbe0a9-4a24-2ce4-5ec4-d2f9a668c358"
total_cost
0.00034255
cache_discount
0.00002265
upstream_inference_cost
0
provider_name
"xAI"
Evaluation details
Result
Evaluator
Details
Meta Data
99.38%
Matches word count
n/a
neededClean
false
words
205
87.09%
Dialogue to Total Word Ratio
Ratio: 56.10%, Deviation: 6.10%
neededClean
false
wordsTotal
205
wordsDialogue
115
93.2331%