Model

Gemini 2.5 Flash

Test

N-Length Sentences

Scenario

Write sentences with 10 words each

Run ID

2025-11-18-01KACP6H1EB8MGHBAX82CBACE1

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed down, a cold, unending December lament. Mr. Hemlock lay still, quite certainly very dead. His crimson silk robe stained further with his gore. A small, engraved letter opener protruded from his chest. Blood blossomed widely, staining the pristine white carpet. The grandfather clock chimed, marking endless, quiet passing. No sound escaped the room; all was chillingly silent. A single, elegant slipper lay discarded by the hearth. Its twin rested perfectly still on Mr. Hemlock’s foot. Detective Harding surveyed the scene, brow deeply furrowed.
created_at"2025-11-18T23:53:33.208455+00:00" Tuesday, November 18th, 2025 at 11:53:33 PM GMT+00:00
model"google/gemini-2.5-flash" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency362
moderation_latency(null)
generation_time1089
tokens_prompt42
tokens_completion127
native_tokens_prompt38
native_tokens_completion126
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"STOP" 
usage0.0003264
api_type"completions" 
id"gen-1763510010-SoEHqwFfq3GJolynhVjn" 
upstream_id(null)
total_cost0.0003264
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio" 

Evaluation details

Result Evaluator Details Meta Data
52.1006% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
08
18
29
39
48
58
69
79
89
98