Run: 2026-03-06-01KK1HWXY2Z1M385V0B630HPMW

Run Details

Duration:
5.6s
Cost:
$0.002352
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
73.77% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain hammered Blackthorn Manor as guests arrived in silence, each carrying secrets heavier than their dripping coats and polished shoes. At precisely eight, the chandelier flickered twice, and Lady Wren announced dinner with a smile sharpened by old grievances. No one noticed the study door ease open upstairs, nor the thin ribbon of cigar smoke curling into darkness. By dessert, thunder shook the windows, a scream split conversation apart, and every candle flame bowed toward sudden terror. They found Lord Ashcombe sprawled beside his desk, crimson soaking the Persian rug, one gloved hand clutching a silver chess knight. Inspector Vale arrived before midnight, surveyed the horrified faces, and murmured that storms made excellent accomplices for carefully planned murders.
created_at"2026-03-06T12:27:59.817Z" 3/6/2026, 12:27:59 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency444
moderation_latency(null)
generation_time5538
tokens_prompt46
tokens_completion204
native_tokens_prompt41
native_tokens_completion150
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.0023525
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0bca6a0f3a675fde0169aac84fdf0c8197a6d62f2ebd091244"
is_byokfalse
latency159
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-1772800079-DcIlafZqDSSnRJGfwPbR"
upstream_id"resp_0bca6a0f3a675fde0169aac84fdf0c8197a6d62f2ebd091244"
total_cost0.0023525
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
73.77% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
119
219
319
421
520