Run: 2026-09-23-01M36V9360QT4JK6QZVVG4DES5

Run Details

Model:
Grok 4.7 (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
21.5s
Cost:
$0.010366
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
100.00% 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 detective arrived at the old manor just after midnight, rain soaking his coat as he studied the silent house. Inside the darkened library a body lay beneath the chandelier, one pale gloved hand still clutching a torn invitation card. The housekeeper swore nobody had entered after dinner, yet fresh muddy footprints crossed the rug toward the open garden doors. Everyone gathered in the drawing room claimed innocence, but the detective noticed one guest avoiding the dead man's empty chair. A distant clock struck one upstairs, and the wary detective realized the killer was still inside the locked manor tonight.
created_at"2026-09-23T09:59:16.938Z" 9/23/2026, 9:59:16 AM
model"x-ai/grok-4.7-20260916"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency674
moderation_latency(null)
generation_time21490
tokens_prompt46
tokens_completion354
native_tokens_prompt1277
native_tokens_completion2022
native_tokens_completion_images(null)
native_tokens_reasoning1910
native_tokens_cached1152
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"completed"
service_tier"default"
usage0.0103664
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790157556-qFlunsOyD4aYPoJMlG5g"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790157556-9YTu3T0KMFefTVdYWoyp"
upstream_id"40fd01f5-2ccb-9081-92e2-42a33844574c"
provider_responses
0
endpoint_id"c942f37a-87e1-4fa8-83d0-8c67fda4fb4a"
id"40fd01f5-2ccb-9081-92e2-42a33844574c"
is_byokfalse
latency300
model_permaslug"x-ai/grok-4.7-20260916"
provider_name"xAI"
status200
total_cost0.0103664
cache_discount0.0013824
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420