Run: 2026-02-25-01KJ94TZVCSSTFQB0T9SJJR834

Run Details

Model:
Gemini 2.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.4s
Cost:
$0.003104
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
94.90% 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

AI
The grand house stood grim. Rain lashed against glass. Arthur checked his pocket watch. Midnight struck the grandfather clock. A faint smell lingered then. He slowly opened the door. Darkness filled the study room. A body lay upon floor. Blood pooled red on carpet. Arthur gasped, eyes wide. This was a clear murder. Terror gripped Arthur's heart. The killer lurked close by.
created_at"2026-02-25T00:57:58.387Z" 2/25/2026, 12:57:58 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1336
moderation_latency(null)
generation_time6345
tokens_prompt46
tokens_completion529
native_tokens_prompt37
native_tokens_completion1237
native_tokens_completion_images0
native_tokens_reasoning1151
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"
usage0.0031036
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1336
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771981078-ZC8LLVm0kKxwF5SvYBjb"
upstream_id(null)
total_cost0.0031036
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
94.90% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
05
14
25
35
45
55
65
75
85
94
105
114
125