Run: 2026-03-12-01KKHZP3NW2NDK7Y9QMEXCGDK6

Run Details

Duration:
9.3s
Cost:
$0.016930
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 experienced detective arrived at the dimly lit old mansion during a fierce thunderstorm that raged outside its ancient walls. Inside the grand hallway a lifeless body lay sprawled across the ornate expensive Persian rug in a pool of blood. The loyal servants gathered nervously nearby whispering dark secrets about the victim who had many enemies in high society circles. The detective examined the mysterious murder weapon carefully searching for clues that might reveal the identity of the unknown killer. Suddenly a mysterious shadowy figure appeared in the doorway watching the investigation with an expression of hidden guilt and fear. .
created_at"2026-03-12T21:36:47.298Z" 3/12/2026, 9:36:47 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8956
moderation_latency(null)
generation_time9210
tokens_prompt46
tokens_completion163
native_tokens_prompt159
native_tokens_completion2807
native_tokens_completion_images0
native_tokens_reasoning2699
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"
usage0.0169296
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"18efda0c-293e-7e8a-eff1-10727bcfd4e2"
is_byokfalse
latency281
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-1773351407-mN5JG1ehSbJ17Y4H3r5h"
upstream_id"18efda0c-293e-7e8a-eff1-10727bcfd4e2"
total_cost0.0169296
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420