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Run: 2026-10-06-01M48VWSNRXVXSZQPT9VFZNESP
Run Details
Model:
Mistral Large 4.0
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
7.8s
Cost:
$0.000918
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
62.72%
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 old lighthouse keeper found the body at dawn, sprawled across the rocks below with blood pooling in the tide. Inspector Mara Voss arrived by boat, her coat flapping wildly as she climbed the steep path toward the grim discovery. Three guests had stayed overnight at the isolated lighthouse, each with secrets and motives hidden beneath polite smiles and nervous laughter. The victim was a wealthy art dealer who had purchased the lighthouse only last month, angering locals who wanted it preserved. Mara studied the scene carefully, noting the single set of footprints leading away from the body toward the eastern cliff edge. Rain began to fall suddenly, threatening to wash away evidence as the inspector knelt beside the cold, unmoving form. A torn photograph fluttered from the dead man's pocket, showing him with a woman none of the guests would identify or acknowledge. The lighthouse keeper claimed he heard nothing, though his trembling hands suggested guilt or fear or both combined together. Mara photographed everything methodically before the storm could destroy what little evidence remained on those wet, slippery stones. She would question each guest separately, watching their eyes for tells, searching for the killer among these frightened, desperate people. The tide was rising now, and soon the rocks would disappear beneath gray water, taking secrets with them into the deep. Someone had planned this murder carefully, choosing the storm and the isolation to ensure no witnesses would ever come. Mara pulled her notebook from her pocket, ready to record statements that would unravel lies and expose the truth eventually. The lighthouse beam swept across the scene in steady rhythm, indifferent to death, continuing its eternal watch over the sea. Three suspects remained, each with opportunity, each with motive, each capable of the violence that had ended this man's life. The inspector knew that by nightfall, one of them would confess or break, unable to bear the weight of what they had done. Dawn had brought death to this place, and only darkness could hide the murderer from the justice that Mara Voss would deliver.
created_at
"2026-10-06T15:04:13.247Z"
10/6/2026, 3:04:13 PM
model
"mistralai/mistral-large-4-0-20261006"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1528
moderation_latency
(null)
generation_time
7738
tokens_prompt
46
tokens_completion
537
native_tokens_prompt
50
native_tokens_completion
423
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
0.00091807
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791299053-qvEP7B50T6Gv65VrUcu2"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791299053-DWxV5RHnPhfaMAQJYrfp"
upstream_id
"20b746c7a2914ac095b48982f9b976e8"
provider_responses
0
endpoint_id
"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id
"20b746c7a2914ac095b48982f9b976e8"
is_byok
false
latency
1527
model_permaslug
"mistralai/mistral-large-4-0-20261006"
provider_name
"Mistral"
status
200
total_cost
0.00091807
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
62.72%
Matches word count
n/a
neededClean
false
sentences
17
wordCounts
0
20
1
20
2
21
3
21
4
21
5
19
6
22
7
19
8
18
9
20
10
21
11
19
12
20
13
20
14
20
15
23
16
22