Run: 2026-03-12-01KKHYZTPH94XP6QJHWCFR44DT

Run Details

Duration:
913ms
Cost:
$0.000612
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
2.93% 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 detective arrived at the isolated mansion under a stormy midnight sky filled with ominous thunder and lightning. The wealthy host lay dead in the opulent library surrounded by scattered books and a shattered glass. Blood pooled beneath the antique desk where valuable documents remained untouched by greedy hands. Every guest present seemed calm yet their eyes revealed hidden secrets and potential motives. The butler entered silently carrying fresh evidence that could crack the entire investigation wide open.
created_at"2026-03-12T21:24:37.206Z" 3/12/2026, 9:24:37 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency265
moderation_latency(null)
generation_time843
tokens_prompt46
tokens_completion133
native_tokens_prompt157
native_tokens_completion88
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached128
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0006116
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"7cb6689e-1ebe-3fc3-2f6d-c1fe565ed160"
is_byokfalse
latency234
model_permaslug"x-ai/grok-4.20-beta-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773350677-27CgUDeqPBGx2Buy0nsQ"
upstream_id"7cb6689e-1ebe-3fc3-2f6d-c1fe565ed160"
total_cost0.0006116
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
2.93% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
018
117
214
314
415