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Run: 2026-09-25-01M3CKF54HVAKFERR49NMJMYS2
Run Details
Model:
Mistral Medium 3.5 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.6s
Cost:
$0.001104
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
59.10%
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 Harlow adjusted his coat, eyes scanning the shadows where the victim’s body lay sprawled unnaturally near the fireplace. A single bloodstained letter opener glinted under the flickering candlelight, its handle carved with an intricate, unfamiliar crest. The butler’s trembling hands clutched a silver tray, his pale face betraying secrets he dared not whisper to the gathered guests. Outside, the storm raged violently, each thunderclap masking the faint sound of hurried footsteps retreating down the long, winding driveway.
created_at
"2026-09-25T15:38:13.528Z"
9/25/2026, 3:38:13 PM
model
"mistralai/mistral-medium-3.5-20260430"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
359
moderation_latency
(null)
generation_time
1537
tokens_prompt
46
tokens_completion
167
native_tokens_prompt
51
native_tokens_completion
137
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
0.001104
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790350693-eai17d3MIXUmr3MWtMls"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790350693-wWcqjMJifof4WlvBkXHm"
upstream_id
"ec5abe1201174939b05cb1d913223fc3"
provider_responses
0
endpoint_id
"38ef23a9-5cb3-46fa-85ec-7aed174f04eb"
id
"ec5abe1201174939b05cb1d913223fc3"
is_byok
false
latency
359
model_permaslug
"mistralai/mistral-medium-3.5-20260430"
provider_name
"Mistral"
status
200
total_cost
0.001104
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
59.10%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
19
1
19
2
18
3
21
4
20