Run: 2026-03-06-01KK1H3KB7HF08TRJJMQ0F40R6

Run Details

Model:
GPT-5.4
Duration:
5.4s
Cost:
$0.001917
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
59.10% 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 needled the manor windows while twelve guests watched the chandelier tremble above the long table set for mourning tonight. Lady Vale raised her crystal glass, smiling faintly, as thunder rolled outside and silver candles guttered toward unexpected darkness. When the lights failed completely, someone inhaled sharply, a chair scraped once, and a single shot shattered everything inside. Silence returned first, then screaming, as electricity flickered back and revealed Lady Vale collapsed over the untouched dessert. On the white linen beneath her hand, someone had written one word in wine: forgiven, though nobody looked relieved.
created_at"2026-03-06T12:14:09.773Z" 3/6/2026, 12:14:09 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1703
moderation_latency(null)
generation_time5187
tokens_prompt46
tokens_completion163
native_tokens_prompt41
native_tokens_completion121
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"
usage0.0019175
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_06b442a8180e22190169aac511d4608196a380b21c5b960b44"
is_byokfalse
latency134
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-1772799249-3cyD1D18xYiYXBXSFm7R"
upstream_id"resp_06b442a8180e22190169aac511d4608196a380b21c5b960b44"
total_cost0.0019175
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
59.10% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
119
219
318
419