Run: 2026-05-01-01KQHSGAV7RQ5E5FGW2718A62D

Run Details

Duration:
26.9s
Cost:
$0.006599
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The ominous storm raged fiercely outside the ancient Victorian mansion. Inside the grand library a lifeless body lay sprawled awkwardly. Fresh blood pooled around the corpse on the expensive carpet. Detective Harlan slowly entered the room with his trusted assistant. The butler stood nervously nearby avoiding any direct eye contact. A mysterious letter lay hidden beneath the victims cold hand. Whispers of betrayal and greed filled the tense air silently.
created_at"2026-05-01T12:51:33.868Z" 5/1/2026, 12:51:33 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency26297
moderation_latency(null)
generation_time26828
tokens_prompt46
tokens_completion613
native_tokens_prompt159
native_tokens_completion2587
native_tokens_completion_images(null)
native_tokens_reasoning2508
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"
usage0.00659905
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"bdf90858-0da1-912e-96a7-b25f058397ae"
is_byokfalse
latency71
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-1777639893-8MaC6rNiVmpugBLR6sE8"
session_id(null)
api_type"completions"
id"gen-1777639893-NPwcHNoP8DyqhZoCG8OA"
upstream_id"bdf90858-0da1-912e-96a7-b25f058397ae"
total_cost0.00659905
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
sentences7
wordCounts
010
110
210
310
410
510
610