Run: 2026-07-08-01KX1MKQMMBGMFRF2W4VH2D3RB

Run Details

Duration:
31.7s
Cost:
$0.022280
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
Under the cover of darkness a mysterious stranger approached the grand mansion with murderous intent carefully concealed inside his coat. The lights were dim inside the luxurious library where Lord Ashcroft sat reading his favorite book unaware of impending doom. Suddenly a loud crash echoed through the halls followed by a piercing scream that shattered the quiet night forever completely. Detective Miles arrived shortly after the urgent report of the crime scene with blood everywhere and the victim lying cold. He carefully examined the cold body noting a single deep stab wound to the chest and a mysterious letter nearby. The letter contained a cryptic message that pointed toward a long forgotten family secret involving several potential suspects all around.
created_at"2026-07-08T19:52:22.429Z" 7/8/2026, 7:52:22 PM
model"x-ai/grok-4.5-20260708"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency413
moderation_latency(null)
generation_time31657
tokens_prompt46
tokens_completion1025
native_tokens_prompt241
native_tokens_completion3665
native_tokens_completion_images(null)
native_tokens_reasoning3537
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"
service_tier"default"
usage0.02228
router(null)
provider_responses
0
endpoint_id"0e927811-b1a8-4604-8b86-db5ce6eaa87c"
id"f65a14d6-6542-9cc1-95db-1b0afe2345fe"
is_byokfalse
latency106
model_permaslug"x-ai/grok-4.5-20260708"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783540342-3bxoGweXRmbCOsm5UK7R"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783540342-J4syX94AZeAS4f3dWElX"
upstream_id"f65a14d6-6542-9cc1-95db-1b0afe2345fe"
total_cost0.02228
cache_discount0.000192
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520