Run: 2026-07-08-01KX1KESFRNJ0JBZZTJZ4KCFQD

Run Details

Duration:
27.7s
Cost:
$0.016010
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
The seasoned detective stepped carefully into the dimly lit study where a lifeless body lay sprawled across the Persian rug. He noticed a bloody knife discarded beside the mahogany desk and wondered who might have committed this heinous crime tonight. The windows were slightly ajar allowing the cold night wind to blow the curtains wildly throughout the otherwise quiet room. No signs of forced entry could be found anywhere indicating that the victim probably knew his murderous killer quite well. Footprints leading out into the garden suggested that the fleeing suspect had vanished into the darkness with incredible speed somehow.
created_at"2026-07-08T19:32:11.902Z" 7/8/2026, 7:32:11 PM
model"x-ai/grok-4.5-20260708"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency484
moderation_latency(null)
generation_time27621
tokens_prompt46
tokens_completion737
native_tokens_prompt241
native_tokens_completion2620
native_tokens_completion_images(null)
native_tokens_reasoning2510
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"
usage0.01601
router(null)
provider_responses
0
endpoint_id"0e927811-b1a8-4604-8b86-db5ce6eaa87c"
id"1ac58d5e-5f92-9fcd-a9eb-67528cd7b755"
is_byokfalse
latency293
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-1783539131-0kYavFG79yC3AuJ0yNic"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783539131-nkLR7b2gElQVh5wl2j7p"
upstream_id"1ac58d5e-5f92-9fcd-a9eb-67528cd7b755"
total_cost0.01601
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
sentences5
wordCounts
020
120
220
320
420