Run: 2026-02-20-01KHY9VWXZF91JFGBR7GCPFQAH

Run Details

Duration:
4.3s
Cost:
$0.000243
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
77.88% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Fog cloaked the ancient manor house. Sir Edmund locked his library door. He sipped rare vintage cognac slowly. Clock struck midnight in eerie silence. Shadow slipped through the French windows. Knife flashed in the dim lamplight. Thud echoed as body hit floor. Blood stained the Persian rug red. Scream shattered the manor’s quiet night. Guests gathered outside the locked door.
created_at"2026-02-20T19:54:12.305Z" 2/20/2026, 7:54:12 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency358
moderation_latency(null)
generation_time4253
tokens_prompt46
tokens_completion157
native_tokens_prompt191
native_tokens_completion455
native_tokens_completion_images0
native_tokens_reasoning369
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"
usage0.00024305
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"e0aea471-0cf3-efd2-6f59-f0407c02764f"
is_byokfalse
latency171
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617252-nizUUH5pQMnqYadqHjZq"
upstream_id"e0aea471-0cf3-efd2-6f59-f0407c02764f"
total_cost0.00024305
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
77.88% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
06
16
26
36
46
56
66
76
86
96