Run: 2026-09-23-01M36WDCGSDY180ZMATAY04W4K

Run Details

Model:
Grok 4.7 (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
21.1s
Cost:
$0.012310
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 weary detective arrived at the old manor house just after midnight and found the library door standing wide open. Inside the silent room a single lamp burned low beside the body of Lord Harrington sprawled across the Persian rug. A silver letter opener lay near his outstretched hand and a faint scent of bitter almonds hung in the air. The frightened housekeeper waited in the dark hallway wringing her hands and refusing to meet the detective's steady questioning gaze. Cold rain tapped the tall windows while somewhere upstairs a loose floorboard creaked and then the whole house fell silent.
created_at"2026-09-23T10:19:06.143Z" 9/23/2026, 10:19:06 AM
model"x-ai/grok-4.7-20260916"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency455
moderation_latency(null)
generation_time21105
tokens_prompt46
tokens_completion310
native_tokens_prompt1277
native_tokens_completion2427
native_tokens_completion_images(null)
native_tokens_reasoning2316
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"
usage0.0123104
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790158746-b2GuJNPfQfOzml186MCQ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790158746-nKnxmNVjL9zucmkSfx2P"
upstream_id"9f54deca-eaf4-9c42-8dab-705abcd01587"
provider_responses
0
endpoint_id"c942f37a-87e1-4fa8-83d0-8c67fda4fb4a"
id"9f54deca-eaf4-9c42-8dab-705abcd01587"
is_byokfalse
latency104
model_permaslug"x-ai/grok-4.7-20260916"
provider_name"xAI"
status200
total_cost0.0123104
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