Run: 2026-05-10-01KR926EJGNWMJCVBY4B0K9YT9

Run Details

Model:
Grok 4.3
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.0s
Cost:
$0.000179
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
0.03% 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
Samantha entered the grand ballroom with sparkling chandeliers casting elegant shadows across polished marble floors perfectly.
created_at"2026-05-10T13:45:59.128Z" 5/10/2026, 1:45:59 PM
model"x-ai/grok-4.3-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4694
moderation_latency(null)
generation_time4982
tokens_prompt46
tokens_completion32
native_tokens_prompt157
native_tokens_completion20
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached64
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"
usage0.00017905
router(null)
provider_responses
0
endpoint_id"45623cb8-18e5-4b32-8fc4-85d05439982d"
id"94f18b30-a80c-964a-8db2-99e9fac37457"
is_byokfalse
latency126
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-1778420759-BelSMTD7V6cpqD1XMEl7"
session_id(null)
api_type"completions"
id"gen-1778420759-nKPm62NZQWBUs2tjnHz6"
upstream_id"94f18b30-a80c-964a-8db2-99e9fac37457"
total_cost0.00017905
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
0.03% Matches word count n/a
neededCleanfalse
sentences1
wordCounts
016