Run: 2026-03-18-01KM07W8WHE7B0JV80ZPGGD3T1

Run Details

Model:
Mistral Small 4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
16.5s
Cost:
$0.001960
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
100.00% 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

AI
The heavy rain hammered against the ancient windows of the old mansion with relentless fury tonight and I couldn't sleep. I heard faint footsteps echoing down the hallway at precisely three in the morning, yet heard nothing else for hours. The ancient old lamp flickered weakly, casting eerie shadows across the dusty study walls tonight as I trembled in fear. What strange sound had awakened me remained a mystery that echoed in my mind all night long unbeknownst to all.
created_at"2026-03-18T10:29:19.899Z" 3/18/2026, 10:29:19 AM
model"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency354
moderation_latency(null)
generation_time16454
tokens_prompt46
tokens_completion2716
native_tokens_prompt51
native_tokens_completion3254
native_tokens_completion_images(null)
native_tokens_reasoning2598
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.00196005
router(null)
provider_responses
0
endpoint_id"f5ed6283-4e17-457d-98cd-2ec0c318171d"
id"f65d31423c25417c832d8f711740f7ba"
is_byokfalse
latency343
model_permaslug"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
provider_name"Mistral"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773829759-4llStQVCpNOAhPcuCgpU"
upstream_id"f65d31423c25417c832d8f711740f7ba"
total_cost0.00196005
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320