Run: 2026-09-25-01M3CKDXA63QEVY0M434Y0TEHC

Run Details

Duration:
1.9s
Cost:
$0.001194
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
85.86% 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, dark and glistening. The butler’s hands trembled as he clutched a silver tray. Whispers spread like wildfire among the shocked, well-dressed crowd. Cole knelt beside the corpse, his mind already racing. Someone here was a killer, and time was running out.
created_at"2026-09-25T15:37:32.753Z" 9/25/2026, 3:37:32 PM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency344
moderation_latency(null)
generation_time1870
tokens_prompt46
tokens_completion168
native_tokens_prompt51
native_tokens_completion149
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"
usage0.001194
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790350652-Hm6D6svEnVLeC6iFMBmf"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790350652-yyUVD8ALGqG2WhvUQrjO"
upstream_id"2547c2c26de941bd8c80218d4601d68f"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"2547c2c26de941bd8c80218d4601d68f"
is_byokfalse
latency344
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001194
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
85.86% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
010
110
210
39
49
59
69
710
89
99
1010