Run: 2026-02-20-01KHY967WXPYJET5PGCB098AQY

Run Details

Duration:
5.9s
Cost:
$0.000241
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
85.19% 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 the ancient manor house on that fateful midnight hour. Guests huddled inside, sharing whispers amid flickering candlelight's eerie glow. Sir Edmund Blackwood vanished after dinner, leaving tension thick as fog. His wife paced nervously, clutching pearls with trembling, ice-cold fingers. Butler Jenkins discovered blood trailing down the oak-paneled staircase. A scream echoed through halls as the body slumped in shadows. Eyes widened in horror; the killer lurked among them now.
created_at"2026-02-20T19:42:22.631Z" 2/20/2026, 7:42:22 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency268
moderation_latency(null)
generation_time5820
tokens_prompt46
tokens_completion253
native_tokens_prompt191
native_tokens_completion450
native_tokens_completion_images0
native_tokens_reasoning352
native_tokens_cached151
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"
usage0.00024055
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"7c117420-af3f-b47a-7e9b-0a1f7fc0d550"
is_byokfalse
latency136
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771616542-uwLuNQZ71qViUUlf91eb"
upstream_id"7c117420-af3f-b47a-7e9b-0a1f7fc0d550"
total_cost0.00024055
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
85.19% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
011
110
211
311
410
511
610