Run: 2026-02-20-01KHY8AKH65AFGKMWXJTMBA45N

Run Details

Duration:
14.3s
Cost:
$0.000661
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
The thick fog shrouded the ancient mansion on the hilltop. Lightning flashed, illuminating the dark grand hall through cracked windows. Sir Reginald Harrington lay sprawled on the fine Persian rug. A pool of blood spread from beneath his lifeless head. Lady Eleanor screamed, her voice echoing through the vast house. The stern Inspector Blackwood arrived just as thunder crashed loudly. His keen eyes scanned the room for any vital clues. Guests nervously gathered, whispering about who could have done it. The storm raged fiercely, sealing everyone inside the old mansion.
created_at"2026-02-20T19:27:17.042Z" 2/20/2026, 7:27:17 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency469
moderation_latency(null)
generation_time14228
tokens_prompt46
tokens_completion377
native_tokens_prompt191
native_tokens_completion1288
native_tokens_completion_images0
native_tokens_reasoning1174
native_tokens_cached341
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"
usage0.00066105
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"b4646bd4-626b-c1d8-c0f9-a2872ac80cbb"
is_byokfalse
latency133
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615637-ovRJHVMKDg22VSE2LkSA"
upstream_id"b4646bd4-626b-c1d8-c0f9-a2872ac80cbb"
total_cost0.00066105
cache_discount0.00002115
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
010
110
210
310
410
510
610
710
810