Run: 2026-03-18-01KM0AHEC0QN0NFAGX0R213QA6

Run Details

Duration:
2.1s
Cost:
$0.000106
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
5.97% 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 rain hammered against the windows as Eleanor Vexley adjusted the antique clock’s pendulum, its ticking growing erratic. The grand library smelled faintly of leather bindings and something metallic beneath the sweet scent of dying roses. A bloodstained letter lay open on the mahogany desk, its crimson ink smudged by trembling fingers. The fire in the hearth had burned low, casting long shadows that danced across the blood-smeared Persian rug. The guests had just arrived, their murmurs drifting up the staircase like a chorus of anxious ghosts. Just as Eleanor turned, the grandfather clock struck midnight, its chime lingering unnaturally long. Without warning, the chandelier above her flickered violently before plunging the room into sudden, suffocating darkness.
created_at"2026-03-18T11:15:50.798Z" 3/18/2026, 11:15:50 AM
model"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency381
moderation_latency(null)
generation_time1995
tokens_prompt46
tokens_completion195
native_tokens_prompt51
native_tokens_completion164
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00010605
router(null)
provider_responses
0
endpoint_id"f5ed6283-4e17-457d-98cd-2ec0c318171d"
id"766d7c14de06483fbe79dcc67e9c7903"
is_byokfalse
latency377
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-1773832550-r9sW7hZabtxnAPN2CChg"
upstream_id"766d7c14de06483fbe79dcc67e9c7903"
total_cost0.00010605
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
5.97% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
018
118
216
318
417
514
616