Run: 2026-03-09-01KK9QCMV4KMS04AVV052PCWW5

Run Details

Duration:
19.2s
Cost:
$0.016647
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain worried the windows of Blackthorn Manor as Inspector Vale arrived, collar raised, summoned by a whisper and midnight telegram. The butler opened the door without surprise, as though death kept appointments here, and tonight had merely arrived punctually again. In the library beneath a portrait with knife bright eyes, Lord Ashcombe lay dead beside an untouched glass of brandy. His daughter stood nearest, gloved and trembling, while the family physician studied the rug as if reading confession in silence. On the mantel, seven clocks ticked different verdicts, and Vale knew someone in this house had rehearsed innocence for years. Then the widow smiled at nothing, and the inspector understood the storm outside was not the night's darkest witness here.
created_at"2026-03-09T16:37:53.134Z" 3/9/2026, 4:37:53 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17785
moderation_latency(null)
generation_time19047
tokens_prompt46
tokens_completion197
native_tokens_prompt41
native_tokens_completion1103
native_tokens_completion_images0
native_tokens_reasoning947
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"
usage0.0166475
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0e83de4ce38ac8f60169aef7614374819581791c5023743649"
is_byokfalse
latency264
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-1773074273-e5NaGLOvSNyJrBmf4N4r"
upstream_id"resp_0e83de4ce38ac8f60169aef7614374819581791c5023743649"
total_cost0.0166475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520