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Run: 2026-09-25-01M3CKEDP60CAN1SCT8D3PT0J5
Run Details
Model:
Mistral Medium 3.5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.3s
Cost:
$0.001187
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
15.00%
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 through the dusty halls. Detective Marlowe adjusted his coat, eyes scanning the shadowed shelves where secrets lurked behind leather-bound spines. A single candle flickered on the mahogany desk, casting long, trembling shadows across the scattered, bloodstained papers. The victim lay sprawled near the fireplace, a silver letter opener buried deep in his motionless, pale chest. Whispers of betrayal hung in the air, each suspect’s alibi crumbling like ash beneath the weight of suspicion. Outside, the storm raged violently, thunder masking the faint creak of footsteps on the ancient, groaning floorboards.
created_at
"2026-09-25T15:37:49.516Z"
9/25/2026, 3:37:49 PM
model
"mistralai/mistral-medium-3.5-20260430"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
417
moderation_latency
(null)
generation_time
2231
tokens_prompt
46
tokens_completion
179
native_tokens_prompt
51
native_tokens_completion
148
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
0.0011865
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790350669-GhnKO994HLgdLyC2jx5e"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790350669-2P4RPIaB5pZcfWnpz4Z7"
upstream_id
"a8ffeb6b7b6845dc91c993867b8a0233"
provider_responses
0
endpoint_id
"38ef23a9-5cb3-46fa-85ec-7aed174f04eb"
id
"a8ffeb6b7b6845dc91c993867b8a0233"
is_byok
false
latency
417
model_permaslug
"mistralai/mistral-medium-3.5-20260430"
provider_name
"Mistral"
status
200
total_cost
0.0011865
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
15.00%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
19
1
16
2
17
3
18
4
18
5
17