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Run: 2026-02-25-01KJ94W2GK1JPBPQFT5FX6NVH8
Run Details
Model:
Gemini 2.5 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
6.5s
Cost:
$0.003286
Provider:
Google AI Studio
Evaluation summary
Score
Evaluator
Details Link
84.88%
Matches word count
(details)
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
Messages
Meta
AI
A biting wind howled through the city streets late. Detective Miles Corbin arrived at the desolate warehouse district. An anonymous call reported something strange near the docks earlier. Warehouse shadows danced ominously under the single flickering lamppost. A faint smell of copper mixed with damp earth lingered. He stepped carefully over discarded crates, flashlight beam sweeping. Then he saw something, partially hidden beneath a stained tarp. A pale hand protruded, unnaturally still and disturbingly cold. The tarp revealed a man’s face, eyes wide open. A single, dark, crimson stain bloomed across his chest. This was not an accident; this was definitely murder here. He reached for his radio, fingers fumbling slightly from shock.
created_at
"2026-02-25T00:58:33.885Z"
2/25/2026, 12:58:33 AM
model
"google/gemini-2.5-flash"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1378
moderation_latency
(null)
generation_time
6510
tokens_prompt
46
tokens_completion
634
native_tokens_prompt
38
native_tokens_completion
1310
native_tokens_completion_images
0
native_tokens_reasoning
1171
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
0.0032864
router
(null)
provider_responses
0
endpoint_id
"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byok
false
latency
1378
model_permaslug
"google/gemini-2.5-flash"
provider_name
"Google AI Studio"
status
200
api_type
"completions"
id
"gen-1771981113-gStwKORy7owtv7d2cYPv"
upstream_id
(null)
total_cost
0.0032864
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Google AI Studio"
Evaluation details
Result
Evaluator
Details
Meta Data
84.88%
Matches word count
n/a
neededClean
false
sentences
12
wordCounts
0
9
1
9
2
10
3
9
4
10
5
9
6
10
7
9
8
9
9
9
10
10
11
10