Run: 2026-05-01-01KQHRP51HAT4TP123P2MXR1EZ

Run Details

Duration:
29.5s
Cost:
$0.008859
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 lay dead in his luxurious study surrounded by valuable antiques and rare books on that fateful night. Blood pooled beneath his motionless body while the curtains fluttered in the wind coming through the open window near him. The loyal butler discovered the body and immediately called the police to report the shocking incident at the large estate. Detective Black arrived shortly thereafter and began to question all of the suspects who were present in the house then. Everyone seemed to have an alibi but the detective knew that one of them must be lying about their whereabouts.
created_at"2026-05-01T12:37:15.959Z" 5/1/2026, 12:37:15 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency28700
moderation_latency(null)
generation_time29418
tokens_prompt46
tokens_completion1020
native_tokens_prompt159
native_tokens_completion3518
native_tokens_completion_images(null)
native_tokens_reasoning3413
native_tokens_cached128
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"
usage0.00885935
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"8aa7c865-e268-95ef-9781-aef86c02aa4f"
is_byokfalse
latency76
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-1777639035-m33zZDEjMNcjzsjcmxiC"
session_id(null)
api_type"completions"
id"gen-1777639035-0Lt0VcfOoN5konkH2eYB"
upstream_id"8aa7c865-e268-95ef-9781-aef86c02aa4f"
total_cost0.00885935
cache_discount0.0001344
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
sentences5
wordCounts
020
120
220
320
420