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Run: 2026-10-07-01M4ATPRN4VZRG4NYVFHSK7A5P
Run Details
Model:
Mistral Medium 3.5
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.4s
Cost:
$0.001891
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
23.17%
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 through dusty shelves. Detective Harlow adjusted his glasses, scanning the dim room where shadows stretched long across the polished floor. A single bloodstain marred the Persian rug, its dark edges creeping like ink across the intricate patterns. The victim lay sprawled near the fireplace, one hand clutching a torn page from a rare, leather-bound book. Whispers of the dead seemed to linger in the air, though no living soul dared to speak above a hush. Harlow knelt, noticing a silver locket glinting beneath the victim’s stiffened fingers, its chain snapped in two. The butler stood rigid by the door, his pale face betraying nothing as his gloved hands trembled slightly. A storm raged outside, rattling the stained-glass windows with a fury that matched the tension in the room. Somewhere in the house, a floorboard creaked, sending a shiver down Harlow’s spine despite his years of experience. The case had begun, and every guest in the mansion was now a suspect under the detective’s sharp gaze.
created_at
"2026-10-07T09:21:55.886Z"
10/7/2026, 9:21:55 AM
model
"mistralai/mistral-medium-3.5-20260430"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
256
moderation_latency
(null)
generation_time
2387
tokens_prompt
46
tokens_completion
282
native_tokens_prompt
51
native_tokens_completion
242
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
0.0018915
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791364915-z1Fq69WydllWFNhGWJxS"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791364915-q0flkeopxDoIKuoVf4Bi"
upstream_id
"89be275e1f1c4494bf8e5791449247a1"
provider_responses
0
endpoint_id
"d21d316f-d540-4718-b36e-3beff85d0cf9"
id
"89be275e1f1c4494bf8e5791449247a1"
is_byok
false
latency
256
model_permaslug
"mistralai/mistral-medium-3.5-20260430"
provider_name
"Mistral"
status
200
total_cost
0.0018915
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
23.17%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
18
1
17
2
17
3
18
4
20
5
17
6
18
7
18
8
18
9
19