Run: 2026-05-01-01KQHQWZ8QAKA08YYS1MV9JRJV

Run Details

Duration:
20.5s
Cost:
$0.006314
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 wealthy businessman was found dead in his luxurious study late one evening during a violent thunderstorm that raged outside. His loyal butler immediately discovered the body lying on the floor next to an overturned chair and a broken glass. The police detective arrived at the isolated mansion to investigate all the suspicious circumstances surrounding this unexpected and tragic death. Numerous guests had attended the exclusive dinner party but none of them seemed to notice anything unusual before the murder.
created_at"2026-05-01T12:23:31.049Z" 5/1/2026, 12:23:31 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency19769
moderation_latency(null)
generation_time20242
tokens_prompt46
tokens_completion692
native_tokens_prompt159
native_tokens_completion2473
native_tokens_completion_images(null)
native_tokens_reasoning2389
native_tokens_cached64
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00631405
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"25e815b9-9c02-9c76-a9ef-7902cb03afc7"
is_byokfalse
latency111
model_permaslug"x-ai/grok-4.20-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777638211-ZpqFZabXj5IgM0k2NlKQ"
session_id(null)
api_type"completions"
id"gen-1777638211-8RyfQJ2j8EYghJykajR1"
upstream_id"25e815b9-9c02-9c76-a9ef-7902cb03afc7"
total_cost0.00631405
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320