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Run: 2026-02-20-01KHXQAJTY27KD27HQ5GZ3E255
Run Details
Model:
Mistral Medium 3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
6.5s
Cost:
$0.000522
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
57.54%
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 estate loomed under storm clouds, its windows flickering with candlelight as guests arrived for dinner that evening. Detective Harlow adjusted his cufflinks, watching the butler’s stiff posture betray something far more sinister than polite hospitality. Lady Whitmore’s emerald necklace glinted too brightly, her laughter sharp enough to cut through the thick tension in the air. A sudden clatter from the library sent the footman scrambling, his pale face suggesting he already knew what lay beyond. The body sprawled across the Persian rug, a silver letter opener buried deep where the heart should have been beating. Blood pooled slowly, seeping into the fibers like whispers of secrets someone had desperately wanted to keep hidden forever. Each guest exchanged glances, their carefully practiced smiles crumbling under the weight of unspoken accusations hanging between them. The grandfather clock chimed midnight, its brass pendulum swinging like a noose over the room where death had just claimed another victim. Detective Harlow knelt beside the corpse, noticing the missing pocket watch—its absence a clue or a deliberate red herring left behind. Somewhere in the house, a floorboard creaked, the sound too deliberate to be dismissed as merely the wind’s restless sigh.
created_at
"2026-02-20T14:30:10.537Z"
2/20/2026, 2:30:10 PM
model
"mistralai/mistral-medium-3.1"
3/1/2001, 12:00:00 AM
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
265
moderation_latency
(null)
generation_time
6449
tokens_prompt
46
tokens_completion
341
native_tokens_prompt
39
native_tokens_completion
253
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)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0005216
router
(null)
provider_responses
0
endpoint_id
"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id
"22e52413e88a4ab89dd32cd3848691c8"
is_byok
false
latency
265
model_permaslug
"mistralai/mistral-medium-3.1"
3/1/2001, 12:00:00 AM
provider_name
"Mistral"
status
200
api_type
"completions"
id
"gen-1771597810-DWOrcJp2hzIdDzpwHLxA"
upstream_id
"22e52413e88a4ab89dd32cd3848691c8"
total_cost
0.0005216
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
57.54%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
19
1
18
2
20
3
20
4
20
5
19
6
18
7
22
8
22
9
20