Run: 2026-10-07-01M4ASRKFNN23B0JWC4SAZB3Z7

Run Details

Duration:
1.8s
Cost:
$0.001059
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
87.04% 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 as rain began to fall. A scream echoed through the halls, sharp and terrifyingly brief. The guests froze, their laughter dying in an instant. Footsteps pounded down the staircase, frantic and unevenly spaced. A body lay sprawled across the library’s Persian rug. Blood pooled around the victim’s head in a dark halo. The butler’s hands trembled as he clutched a silver tray. Whispers spread like wildfire among the assembled, nervous crowd. Someone here was a killer, and Cole knew it.
created_at"2026-10-07T09:05:27.554Z" 10/7/2026, 9:05:27 AM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency406
moderation_latency(null)
generation_time1813
tokens_prompt46
tokens_completion150
native_tokens_prompt51
native_tokens_completion131
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"
usage0.001059
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791363927-b6WiXnxykXo4sg9fxAUI"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791363927-VvnOdVr4QnxeldSSBv8e"
upstream_id"291a4685390549628267d721baa714d7"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"291a4685390549628267d721baa714d7"
is_byokfalse
latency406
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001059
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
87.04% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
39
49
59
610
710
89
99