Run: 2026-03-06-01KK1GRVVWT0A438VY15HM06ME

Run Details

Model:
GPT-5.4
Duration:
4.6s
Cost:
$0.002233
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
97.41% 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 battered Blackthorn Hall as mourners gathered for Lady Wren's funeral. Inside, candlelight trembled across portraits whose eyes seemed almost accusatory. Detective Mara Vale removed her gloves and studied every face. Grief looked rehearsed here, she thought, like lines memorized badly. A scream shattered prayers when the vicar opened the crypt. Lady Wren's coffin lay empty, its satin lining freshly torn. Then someone laughed upstairs, exactly where no guest should be. Mara reached for her notebook as thunder smothered every answer. On the staircase, wet footprints gleamed, leading upward toward darkness. Before anyone moved, the manor lights died, and something fell.
created_at"2026-03-06T12:08:18.051Z" 3/6/2026, 12:08:18 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency476
moderation_latency(null)
generation_time4582
tokens_prompt46
tokens_completion177
native_tokens_prompt41
native_tokens_completion142
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"
usage0.0022325
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_01f7baa443e570f30169aac3b21a9881948b5a38a12c260ab7"
is_byokfalse
latency157
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-1772798898-BHkAaQhHtlzMgkWH9cPL"
upstream_id"resp_01f7baa443e570f30169aac3b21a9881948b5a38a12c260ab7"
total_cost0.0022325
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
97.41% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
110
210
310
410
510
610
710
810
910