Run: 2026-05-01-01KQHRQQM9YQCANHPW57PYHTXF

Run Details

Model:
Grok 4.3 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
25.9s
Cost:
$0.006199
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 depths of the foggy night the detective arrived at the scene of the dreadful murder inside the estate. He noticed the body lying on the floor with a knife protruding from the chest in a pool of blood. Creepy whispers of an inheritance dispute among the family members echoed through the halls making everyone a potential suspect now.
created_at"2026-05-01T12:38:07.757Z" 5/1/2026, 12:38:07 PM
model"x-ai/grok-4.3-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency25567
moderation_latency(null)
generation_time25892
tokens_prompt46
tokens_completion415
native_tokens_prompt159
native_tokens_completion2427
native_tokens_completion_images(null)
native_tokens_reasoning2363
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"
usage0.00619905
router(null)
provider_responses
0
endpoint_id"45623cb8-18e5-4b32-8fc4-85d05439982d"
id"697ee2e3-f852-956d-887d-df40ecfe0769"
is_byokfalse
latency59
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-1777639087-3TfWkd9lQZ1lZ26ZRpbZ"
session_id(null)
api_type"completions"
id"gen-1777639087-rm14fdZLKE6gM2Q8axGo"
upstream_id"697ee2e3-f852-956d-887d-df40ecfe0769"
total_cost0.00619905
cache_discount0.0000672
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
sentences3
wordCounts
020
120
220