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Run: 2026-10-06-01M48VQAR55AYQF7B9P073K0PQ
Run Details
Model:
Mistral Large 4.0
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
7.4s
Cost:
$0.000577
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
78.31%
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 antique clock in the hallway struck thirteen times as Detective Mara Voss stepped through the front door of Blackwood Manor. Rain lashed against the tall Gothic windows while thunder rolled across the Yorkshire moors that distant evening. Lord Pemberton's body lay sprawled upon the Persian rug, his silver letter opener protruding from his chest with terrible precision. Three guests remained in the drawing room, each claiming they had been alone when the fatal blow was struck downstairs. The butler, Mrs. Crenshaw, stood rigid by the fireplace, her knuckles white around a silver tray of untouched champagne glasses. A single red rose lay beside the corpse, its thorns removed with surgical care by some unknown hand that night. Mara knelt beside the body, noting how the blood had pooled in a perfect circle, suggesting the killer had waited patiently. The grandfather clock had stopped at 9:47, though no one could explain why it had ceased its steady rhythmic heartbeat. Footprints in the mud outside suggested someone had entered through the garden, bypassing the locked doors and alarmed windows entirely. The victim's pocket watch, still running, showed 9:52, creating a five-minute window that would haunt the investigation for weeks.
created_at
"2026-10-06T15:01:14.121Z"
10/6/2026, 3:01:14 PM
model
"mistralai/mistral-large-4-0-20261006"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
818
moderation_latency
(null)
generation_time
7377
tokens_prompt
46
tokens_completion
313
native_tokens_prompt
50
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
0.0005774
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791298874-TJAFTu4rDPRFH0930HTm"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791298874-TzKGUVws6qcSHIfkCj5J"
upstream_id
"2504236db68941e39098dd71a2e6cf26"
provider_responses
0
endpoint_id
"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id
"2504236db68941e39098dd71a2e6cf26"
is_byok
false
latency
818
model_permaslug
"mistralai/mistral-large-4-0-20261006"
provider_name
"Mistral"
status
200
total_cost
0.0005774
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
78.31%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
21
1
17
2
20
3
20
4
20
5
20
6
21
7
20
8
20
9
19