Run: 2026-05-01-01KQHRSPD7DTR1KTY66DYHCHPF

Run Details

Duration:
48.1s
Cost:
$0.012174
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
Rain lashed against the windows of the old mansion relentlessly. The host lay dead in the library with a dagger. All the guests gathered around him in total disbelief now. The detective examined the scene with careful attention to detail. The nervous butler avoided eye contact with the lead investigator.
created_at"2026-05-01T12:39:12.051Z" 5/1/2026, 12:39:12 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency47652
moderation_latency(null)
generation_time48047
tokens_prompt46
tokens_completion1151
native_tokens_prompt159
native_tokens_completion4844
native_tokens_completion_images(null)
native_tokens_reasoning4788
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"
usage0.01217435
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"3bea09a6-11e3-9e1c-a3ed-5e8f0cd0df3d"
is_byokfalse
latency81
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-1777639152-yx5ysXuJO1BgyFYWPrJe"
session_id(null)
api_type"completions"
id"gen-1777639152-pEfPTUOmVhx4aQbtTgcA"
upstream_id"3bea09a6-11e3-9e1c-a3ed-5e8f0cd0df3d"
total_cost0.01217435
cache_discount0.0001344
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