Run: 2026-05-01-01KQHREA4J5WPD4VK49RKFTF4Z

Run Details

Duration:
25.4s
Cost:
$0.006617
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old mansion loomed ominously. Lightning flashed across dark skies. Thunder echoed through silent halls. A body sprawled on carpet. The victim held strange note. Guests whispered in hushed tones. Detective scanned for vital clues. Murder had struck once again.
created_at"2026-05-01T12:32:59.032Z" 5/1/2026, 12:32:59 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency24898
moderation_latency(null)
generation_time25316
tokens_prompt46
tokens_completion609
native_tokens_prompt159
native_tokens_completion2594
native_tokens_completion_images(null)
native_tokens_reasoning2543
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"
usage0.00661655
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"6bab77e9-ec46-9300-8608-816edc08ba9e"
is_byokfalse
latency110
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-1777638779-zXxegi2I3sDOFg24Towt"
session_id(null)
api_type"completions"
id"gen-1777638779-ZLyrpoLD5q4gpgEefrsx"
upstream_id"6bab77e9-ec46-9300-8608-816edc08ba9e"
total_cost0.00661655
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
sentences8
wordCounts
05
15
25
35
45
55
65
75