Run: 2026-03-06-01KK1GBF5VSMJA7KCQDXRC3FZR

Run Details

Duration:
4.9s
Cost:
$0.002247
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
94.82% 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 glazed Blackthorn Hall as mourners gathered beneath weeping eaves. Lady Wren arrived late, her gloves damp, expression carefully unreadable. Inside, candles trembled, casting long shadows across ancestral portraits. The butler announced dinner, though no one admitted feeling hungry. At table's head sat Sir Alistair, pale, silent, and rigid. His wine remained untouched, dark as the storm outside tonight. When thunder struck, Lady Wren noticed blood beneath his cuff. No one screamed immediately; shock settled first, cold and deliberate. Then Sir Alistair toppled sideways, dead before silver touched floor. Somewhere above, a door clicked shut with practiced gentleness.
created_at"2026-03-06T12:00:59.074Z" 3/6/2026, 12:00:59 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency421
moderation_latency(null)
generation_time4820
tokens_prompt46
tokens_completion178
native_tokens_prompt41
native_tokens_completion143
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"
usage0.0022475
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0e4d46f4b89abaec0169aac1fb21ac819091bb52327defba8b"
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-1772798459-G1MobJtaqQog8gn3XmEb"
upstream_id"resp_0e4d46f4b89abaec0169aac1fb21ac819091bb52327defba8b"
total_cost0.0022475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
94.82% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
29
310
410
510
610
710
810
99