Run: 2026-03-12-01KKHZMDBH8X4CRKGJTDA5W8VQ

Run Details

Model:
Grok 4.20 (Beta)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
645ms
Cost:
$0.000420
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 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 there. Shadows danced on pale walls. Silence wrapped the eerie scene. Clues waited to be found. He scanned for hidden answers. The clock ticked endlessly onward.
created_at"2026-03-12T21:35:51.671Z" 3/12/2026, 9:35:51 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency304
moderation_latency(null)
generation_time548
tokens_prompt46
tokens_completion71
native_tokens_prompt157
native_tokens_completion56
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"
usage0.0004196
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"32710772-97ef-a161-6e14-af03b6550508"
is_byokfalse
latency288
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-1773351351-nTerl8YNOwzQnIccJ6yG"
upstream_id"32710772-97ef-a161-6e14-af03b6550508"
total_cost0.0004196
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
05
15
25
35
45
55
65
75