Run: 2026-03-12-01KKHZ7214F193Y5419QX8WZ87

Run Details

Duration:
7.3s
Cost:
$0.012880
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
78.38% 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
In the dimly lit library of the ancient family estate the body lay motionless on the ornate Persian rug there. Detective Harrison examined the scene with great care noting the absence of any obvious signs of forced entry or struggle. The victim had been stabbed precisely in the heart with a rare antique dagger that belonged to his collection apparently. The wealthy host had invited several suspicious guests for dinner that evening yet no one claimed to have heard any unusual sounds.
created_at"2026-03-12T21:28:34.089Z" 3/12/2026, 9:28:34 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6921
moderation_latency(null)
generation_time7260
tokens_prompt46
tokens_completion123
native_tokens_prompt159
native_tokens_completion2132
native_tokens_completion_images0
native_tokens_reasoning2045
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"
usage0.0128796
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"8ca60cec-b8d9-858a-cbec-ffcc8f29c1c8"
is_byokfalse
latency378
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-1773350914-R1c9kQ4hiZ1xMOaaGyks"
upstream_id"8ca60cec-b8d9-858a-cbec-ffcc8f29c1c8"
total_cost0.0128796
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
78.38% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
322