Run: 2026-03-09-01KK9QPXBHXKA4E3AMHTFFBR6F

Run Details

Duration:
13.8s
Cost:
$0.013152
Provider:
OpenAI

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
Rain stitched silver threads across Blackthorn Manor's darkened windows tonight. Inside, the grandfather clock coughed midnight into the silent hall. Evelyn Hart removed one glove, noticing blood beneath her fingernails. Nobody else had seen the library door swing open slowly. Yet everyone heard the scream, sharp as crystal shattering upstairs. When she entered, Lord Ashcombe lay smiling beside extinguished candles. A chess king rested in his mouth like accusation itself. On the mantel, six portraits watched; one pair seemed alive. Evelyn knew then the murderer remained inside the manor still.
created_at"2026-03-09T16:43:29.536Z" 3/9/2026, 4:43:29 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13488
moderation_latency(null)
generation_time13687
tokens_prompt46
tokens_completion552
native_tokens_prompt41
native_tokens_completion870
native_tokens_completion_images0
native_tokens_reasoning745
native_tokens_cached0
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"
usage0.0131525
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_04c544f910b0ac8d0169aef8b19d7c8197b1caa8608b1f51e1"
is_byokfalse
latency175
model_permaslug"openai/gpt-5.4-20260305"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773074609-FrPFBGVJ8gec2uDUiobw"
upstream_id"resp_04c544f910b0ac8d0169aef8b19d7c8197b1caa8608b1f51e1"
total_cost0.0131525
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

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