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Run: 2026-09-25-01M3CKEF74T2HVSXQZKD9R68RX
Run Details
Model:
Mistral Medium 3.5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.6s
Cost:
$0.001629
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
0.12%
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. Detective Harlow adjusted his glasses, scanning the shadowed shelves for any sign of movement. A single candle flickered on the mahogany desk, casting long, trembling shadows across the floor. The victim lay sprawled near the fireplace, a crimson stain spreading across his tailored waistcoat. His pocket watch had stopped at exactly eleven forty-seven, the hands frozen in time forever. A torn page from a rare manuscript clutched in his stiff fingers hinted at a motive. The scent of bitter almonds lingered in the air, a telltale sign of poison’s deadly embrace. Footsteps echoed in the hallway, but no one appeared when Harlow called out into the darkness. The butler’s hands shook as he claimed to have seen nothing unusual that fateful night. A shattered brandy glass lay near the body, its pieces glinting like jagged teeth in the firelight.
created_at
"2026-09-25T15:37:51.083Z"
9/25/2026, 3:37:51 PM
model
"mistralai/mistral-medium-3.5-20260430"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
357
moderation_latency
(null)
generation_time
2513
tokens_prompt
46
tokens_completion
243
native_tokens_prompt
51
native_tokens_completion
207
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
0.001629
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790350671-goMtzpAcz7wUkAkJuH33"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790350671-06bqMEX6JE2vvdLqPznZ"
upstream_id
"d05188f4552047f9880826b525aeb0f0"
provider_responses
0
endpoint_id
"38ef23a9-5cb3-46fa-85ec-7aed174f04eb"
id
"d05188f4552047f9880826b525aeb0f0"
is_byok
false
latency
356
model_permaslug
"mistralai/mistral-medium-3.5-20260430"
provider_name
"Mistral"
status
200
total_cost
0.001629
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
0.12%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
15
1
14
2
15
3
15
4
15
5
16
6
16
7
16
8
15
9
17