Run: 2026-03-12-01KKHZ51R9WPNQ5104N86V30S9

Run Details

Model:
Grok 4.20 (Beta)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
773ms
Cost:
$0.000480
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
66.75% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The detective entered the dimly lit room with caution. Everyone stared silently at the motionless body on floor. Blood pooled slowly around the victim in elegant patterns. Whispers spread quickly among the frightened guests nearby table. Secrets hung heavily like thick fog over tense atmosphere. Clues waited patiently for discovery in shadowed corners.
created_at"2026-03-12T21:27:28.27Z" 3/12/2026, 9:27:28 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency374
moderation_latency(null)
generation_time716
tokens_prompt46
tokens_completion94
native_tokens_prompt157
native_tokens_completion66
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"
usage0.0004796
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"8bba8840-3b1b-9ed8-8d8a-e3526a6a3b05"
is_byokfalse
latency334
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-1773350848-zo8TAs3qrcCKuXERatNu"
upstream_id"8bba8840-3b1b-9ed8-8d8a-e3526a6a3b05"
total_cost0.0004796
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
66.75% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
09
19
29
39
49
58