Run: 2026-05-01-01KQHSPTC96VNBMCXZMR0YRPP8

Run Details

Model:
Grok 4.3 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
34.9s
Cost:
$0.007864
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
In the dimly lit dining room of the ancient mansion the guests gathered around the long oak table for dinner. Chatter filled the air until the host stood up to announce something important about his vast family fortune that night. Without warning the host clutched his throat gasping for breath as poison took effect and he fell onto the floor. Unexpected panic spread quickly through the large dining room full of guests who realized the host had died from poison.
created_at"2026-05-01T12:55:06.381Z" 5/1/2026, 12:55:06 PM
model"x-ai/grok-4.3-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency34195
moderation_latency(null)
generation_time34895
tokens_prompt46
tokens_completion600
native_tokens_prompt159
native_tokens_completion3120
native_tokens_completion_images(null)
native_tokens_reasoning3036
native_tokens_cached128
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"
usage0.00786435
router(null)
provider_responses
0
endpoint_id"45623cb8-18e5-4b32-8fc4-85d05439982d"
id"927d6536-f685-c92b-5a3c-89a0860e0e4a"
is_byokfalse
latency62
model_permaslug"x-ai/grok-4.3-20260430"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777640106-oh4OzfFdQG5Z66csc0al"
session_id(null)
api_type"completions"
id"gen-1777640106-8Lnqzk2GSqL2jQZggRte"
upstream_id"927d6536-f685-c92b-5a3c-89a0860e0e4a"
total_cost0.00786435
cache_discount0.0001344
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320