NC Bench
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Run: 2026-02-19-01KHVPFBQHFQ2169G3TX3WCD7W
Run Details
Model:
Gemini 3.1 Pro (Preview)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
36.4s
Cost:
$0.046814
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Thunder rattled the window frames. Rain pounded against the glass. Red blood stained the carpet. Detective Miller entered the room. The cold corpse lay still. A sharp knife rested nearby. Shadows danced across pale skin. Nobody heard the victim scream. The grandfather clock ticked loudly. Miller knelt beside the body. He recognized the dead woman. She wore a beautiful dress. Her diamond necklace was broken. One precious stone was missing. Someone wanted this woman silenced. Footsteps echoed in the hallway. The killer was still here. Miller reached for his weapon. He held his breath quietly. The heavy brass doorknob turned.
created_at
"2026-02-19T19:36:49.482Z"
2/19/2026, 7:36:49 PM
model
"google/gemini-3.1-pro-preview-20260219"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2955
moderation_latency
(null)
generation_time
35671
tokens_prompt
46
tokens_completion
1151
native_tokens_prompt
37
native_tokens_completion
3895
native_tokens_completion_images
0
native_tokens_reasoning
3772
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
"STOP"
usage
0.046814
router
(null)
provider_responses
0
endpoint_id
"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byok
false
latency
2955
model_permaslug
"google/gemini-3.1-pro-preview-20260219"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771529809-orqxDQfr8kgBbGZvLqhV"
upstream_id
(null)
total_cost
0.046814
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
20
wordCounts
0
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
9
5
10
5
11
5
12
5
13
5
14
5
15
5
16
5
17
5
18
5
19
5