Run: 2026-03-09-01KKACDBMZSYVW2PEDN3MDZSD0

Run Details

Duration:
10.3s
Cost:
$0.008757
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 needled the manor windows as midnight swallowed Blackthorn Hall. Inside, twelve guests lingered silently around the unfinished anniversary supper. A clock chimed once, then stopped, as though startled itself. Lady Morwen appeared smiling, carrying champagne, secrets, and crimson lipstick. She toasted absent husbands, faithful friends, and profitable lies tonight. Then darkness fell abruptly, and someone screamed beside the hearth. When candles returned, Lady Morwen lay motionless beneath toppled roses. The champagne bottle glittered nearby, uncorked, accusing everyone without preference. On her throat, a pearl necklace tightened like patient fingers. No door had opened, yet one guest was missing already.
created_at"2026-03-09T22:45:16.583Z" 3/9/2026, 10:45:16 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9959
moderation_latency(null)
generation_time10094
tokens_prompt46
tokens_completion486
native_tokens_prompt41
native_tokens_completion577
native_tokens_completion_images0
native_tokens_reasoning436
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"
usage0.0087575
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0d8aa53cc4de984f0169af4d7ca4208197bc1f963625e20cea"
is_byokfalse
latency149
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-1773096316-TQM3NvS7NkdNvSqlIXWP"
upstream_id"resp_0d8aa53cc4de984f0169af4d7ca4208197bc1f963625e20cea"
total_cost0.0087575
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910