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Run: 2026-10-06-01M48W1ZD2AVDP7MW143T4BTBX
Run Details
Model:
Mistral Large 4.0
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
17.0s
Cost:
$0.000479
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
67.74%
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 autumn wind howled through the skeletal branches of Blackwood Manor as Detective Inspector Mara Voss arrived at the iron gates. She stepped from her battered sedan and stared up at the Victorian mansion looming against the bruised purple sky overhead. A single light burned in the third-floor window, flickering like a dying heartbeat in the gathering darkness outside. Constable Finch emerged from the shadows, his face pale beneath the gas lamp that sputtered and hissed with dying breath. "The body's in the library, Inspector," he whispered, his voice trembling like a leaf caught in the howling October gale. "Lord Blackwood himself, murdered most foul, and the family's already gathering like vultures in the drawing room below." Mara adjusted her gloves and walked toward the heavy oak doors, her footsteps echoing on the gravel path with terrible finality. She did not look back at the hearse waiting by the gate, its black paint gleaming wetly in the rain.
created_at
"2026-10-06T15:07:02.957Z"
10/6/2026, 3:07:02 PM
model
"mistralai/mistral-large-4-0-20261006"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
638
moderation_latency
(null)
generation_time
16932
tokens_prompt
46
tokens_completion
243
native_tokens_prompt
50
native_tokens_completion
213
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
0.00047917
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791299222-6GjZsTp38i5zE4GcBvqw"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791299222-4Vx2aPIoUvJcRrezYQhw"
upstream_id
"439c2789e65445049d98b112b63625ad"
provider_responses
0
endpoint_id
"540e63db-cc7c-4556-bb67-d449579bcf1a"
id
"439c2789e65445049d98b112b63625ad"
is_byok
false
latency
638
model_permaslug
"mistralai/mistral-large-4-0-20261006"
provider_name
"Mistral"
status
200
total_cost
0.00047917
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
67.74%
Matches word count
n/a
neededClean
false
sentences
7
wordCounts
0
21
1
20
2
18
3
20
4
20
5
39
6
20