Run: 2026-09-25-01M3CKF54HVAKFERR49NMJMYS2

Run Details

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

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_id182717
external_user(null)
streamedtrue
cancelledfalse
latency359
moderation_latency(null)
generation_time1537
tokens_prompt46
tokens_completion167
native_tokens_prompt51
native_tokens_completion137
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
service_tier"default"
usage0.001104
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_byokfalse
latency359
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001104
cache_discount(null)
upstream_inference_cost0
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
neededCleanfalse
sentences5
wordCounts
019
119
218
321
420