Run: 2026-10-07-01M4ATBV78BHVBSQRKJXZXGSRH

Run Details

Duration:
1.5s
Cost:
$0.001089
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
97.41% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The grand mansion loomed under a stormy, moonless night sky. Detective Cole adjusted his coat, feeling the cold wind bite. A single candle flickered in the hallway, casting long shadows. The butler stood stiffly, his face pale with obvious dread. Footsteps echoed down the marble staircase, slow and deliberate. A scream pierced the silence, then abruptly cut off short. Cole rushed toward the sound, heart pounding in his chest. The study door creaked open, revealing a gruesome, bloody scene. Sir Reginald lay sprawled across his desk, eyes wide open. A silver letter opener protruded from his lifeless, motionless chest.
created_at"2026-10-07T09:15:58.067Z" 10/7/2026, 9:15:58 AM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency274
moderation_latency(null)
generation_time1460
tokens_prompt46
tokens_completion159
native_tokens_prompt51
native_tokens_completion135
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"
usage0.001089
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791364558-EWlln3iubUsBaQBJuXh0"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791364558-HMUTNpgQuqp4aAFwSsYU"
upstream_id"49c60a84cd69412ebc1aeaf465170436"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"49c60a84cd69412ebc1aeaf465170436"
is_byokfalse
latency274
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001089
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
97.41% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
49
510
610
710
810
910