Run: 2026-03-12-01KKHZTY4G87CDCRW2EPA20392

Run Details

Duration:
775ms
Cost:
$0.000558
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
78.91% 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 mansion with cautious steps. Blood stained the antique carpet beneath the victim's body. Shadows danced across the walls hiding potential clues everywhere. Servants whispered secrets in corners avoiding direct questions. Thunder roared outside as rain began pouring heavily down. A single broken vase revealed the struggle that occurred recently. The clock struck midnight marking the exact time of death.
created_at"2026-03-12T21:39:25.463Z" 3/12/2026, 9:39:25 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency305
moderation_latency(null)
generation_time714
tokens_prompt46
tokens_completion117
native_tokens_prompt157
native_tokens_completion79
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"
usage0.0005576
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"ff93d168-df2a-0b63-d2ac-e75ad5f00bb2"
is_byokfalse
latency266
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-1773351565-McT8FpadMYMXjEcmHtNQ"
upstream_id"ff93d168-df2a-0b63-d2ac-e75ad5f00bb2"
total_cost0.0005576
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
78.91% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
010
19
29
38
49
510
610