Run: 2026-03-12-01KKHZ1BJS0NDP7389PERTXZ5K

Run Details

Model:
Grok 4.20 (Beta)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
704ms
Cost:
$0.000462
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
97.54% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The detective entered the room. Blood stained the wooden floor. A body lay motionless nearby. Shadows danced across pale walls. Silence filled the empty house. Footsteps echoed from afar. Someone had been here recently. Clues waited to be found. The mystery had just begun.
created_at"2026-03-12T21:25:27.264Z" 3/12/2026, 9:25:27 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency357
moderation_latency(null)
generation_time621
tokens_prompt46
tokens_completion79
native_tokens_prompt157
native_tokens_completion63
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached128
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0004616
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"e1703ad6-69ec-2f48-ce2b-94b452d3bb59"
is_byokfalse
latency354
model_permaslug"x-ai/grok-4.20-beta-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773350727-DIFGkBnkeJWF190WWLxy"
upstream_id"e1703ad6-69ec-2f48-ce2b-94b452d3bb59"
total_cost0.0004616
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
97.54% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
05
15
25
35
45
54
65
75
85