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Run: 2026-09-25-01M3CKBP7EC5RF45JTZ174SJWN
Run Details
Model:
Mistral Medium 3.5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.9s
Cost:
$0.002027
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
0.00%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The grand library fell silent as the clock struck midnight with an eerie, echoing chime. Detective Harlow adjusted his glasses, scanning the shadowed shelves for any sign of movement. A single candle flickered on the mahogany desk, casting long, trembling shadows across the floor. The victim lay sprawled near the fireplace, a crimson stain spreading across his tailored waistcoat. His monocle had rolled beneath the armchair, glinting faintly in the dim, uncertain light. A faint scent of lavender and gunpowder lingered in the air, thick and unsettling. The butler stood rigid by the door, his pale hands clutching a silver tray too tightly. Whispers slithered through the gathered guests, each word laced with suspicion and barely concealed fear. Harlow knelt beside the body, noting the absence of any visible struggle or defensive wounds. The window latch was broken, suggesting someone had entered or exited in haste. A torn scrap of fabric snagged on the curtain hinted at a hurried, desperate escape. The victim’s pocket watch had stopped at exactly eleven forty-seven, its hands frozen in time. Harlow’s pulse quickened as he realized the killer might still be in the room.
created_at
"2026-09-25T15:36:19.958Z"
9/25/2026, 3:36:19 PM
model
"mistralai/mistral-medium-3.5-20260430"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
640
moderation_latency
(null)
generation_time
2905
tokens_prompt
46
tokens_completion
307
native_tokens_prompt
51
native_tokens_completion
260
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
service_tier
"default"
usage
0.0020265
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790350579-ulhgCe8o3tjdi2iaKzrq"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790350579-nxQd36qvNiBrEXAP25oj"
upstream_id
"e51135be39ce4f4d852803cd2ecafddf"
provider_responses
0
endpoint_id
"d21d316f-d540-4718-b36e-3beff85d0cf9"
id
"e51135be39ce4f4d852803cd2ecafddf"
is_byok
false
latency
639
model_permaslug
"mistralai/mistral-medium-3.5-20260430"
provider_name
"Mistral"
status
200
total_cost
0.0020265
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
0.00%
Matches word count
n/a
neededClean
false
sentences
13
wordCounts
0
15
1
14
2
15
3
15
4
14
5
14
6
16
7
15
8
15
9
13
10
15
11
15
12
14