Run: 2026-05-01-01KQHQR950NAQS9BZAJRY1FJ4Z

Run Details

Duration:
1.3s
Cost:
$0.000274
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
94.82% 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. A single gunshot echoed through the silent elegant halls loudly. Blood pooled slowly around the victim on the ornate rug. Guests whispered nervously while avoiding direct eye contact suspiciously. The clock struck midnight marking the start of deadly intrigue.
created_at"2026-05-01T12:20:57.125Z" 5/1/2026, 12:20:57 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency532
moderation_latency(null)
generation_time1270
tokens_prompt46
tokens_completion86
native_tokens_prompt157
native_tokens_completion58
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00027405
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"2521c50a-f499-92f0-a79a-a268a12ba32c"
is_byokfalse
latency156
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-1777638057-AryDIuZXHgpXsHWko9sq"
session_id(null)
api_type"completions"
id"gen-1777638057-8Xp99g2dyit9UJ21AJsj"
upstream_id"2521c50a-f499-92f0-a79a-a268a12ba32c"
total_cost0.00027405
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
94.82% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
010
110
210
39
410