Run: 2026-05-01-01KQHRYTJRG8ZXWK086ZJTF12H

Run Details

Model:
Grok 4.3 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
40.4s
Cost:
$0.009369
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 looked at the body lying on the floor of the mansion with surprise and confusion in his eyes. He noticed the dagger sticking out from the back of the victim covered in fresh blood which puzzled him greatly. The old library window stood wide open letting cold wind blow inside scattering many papers across the entire wooden floor. Suddenly the detective realized that this was no ordinary accident but rather a very deliberate and brutal murder case indeed.
created_at"2026-05-01T12:42:00.16Z" 5/1/2026, 12:42:00 PM
model"x-ai/grok-4.3-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency39576
moderation_latency(null)
generation_time40310
tokens_prompt46
tokens_completion797
native_tokens_prompt159
native_tokens_completion3695
native_tokens_completion_images(null)
native_tokens_reasoning3611
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"
usage0.00936905
router(null)
provider_responses
0
endpoint_id"45623cb8-18e5-4b32-8fc4-85d05439982d"
id"d6689667-6906-7fde-02f3-2c088d6c5529"
is_byokfalse
latency176
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-1777639320-cIp3u3WXHlyLFQLoZrJB"
session_id(null)
api_type"completions"
id"gen-1777639320-NWgSMu0cjLQnkcD1cvyF"
upstream_id"d6689667-6906-7fde-02f3-2c088d6c5529"
total_cost0.00936905
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
sentences4
wordCounts
020
120
220
320