Run: 2026-05-01-01KQHSWWMS4046RVXDBVXJNZ0M

Run Details

Duration:
17.6s
Cost:
$0.004929
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
Thick dark clouds gathered above the old estate that night. The owner of the house was discovered dead at dawn. Fresh blood stained the elegant carpet near the dead body. Inspector Black entered the dimly lit room with serious intent. He searched for clues hidden around the opulent surroundings carefully.
created_at"2026-05-01T12:58:25.332Z" 5/1/2026, 12:58:25 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17112
moderation_latency(null)
generation_time17469
tokens_prompt46
tokens_completion485
native_tokens_prompt159
native_tokens_completion1919
native_tokens_completion_images(null)
native_tokens_reasoning1862
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"
usage0.00492905
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"e43474b9-94b0-94c9-be20-ceb5efd44193"
is_byokfalse
latency69
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-1777640305-xQsmk61f51huwcUrlPne"
session_id(null)
api_type"completions"
id"gen-1777640305-W6isvlRJwcyOPecV2ho4"
upstream_id"e43474b9-94b0-94c9-be20-ceb5efd44193"
total_cost0.00492905
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
sentences5
wordCounts
010
110
210
310
410