Run: 2026-04-24-01KQ0MWKMN59PTPGHW6XDJRP9A

Run Details

Duration:
12.7s
Cost:
$0.019885
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver threads across Blackmoor Manor's windows that midnight. Inside, the guests applauded while thunder swallowed the final toast. Then Lady Vale screamed, shattering crystal and every polite smile. Lord Ashcombe lay beneath the portrait, eyes open, throat bleeding. A bloodied chess knight rested inside his stiffening right hand. No one moved, except Inspector Crowe, quietly closing the doors. He counted twelve faces, each reflecting firelight, fear, and calculation. The clock struck one, though everyone remembered winding it earlier. Outside, wet footprints ended abruptly beside the locked conservatory door. Crowe smiled thinly, knowing murder had chosen a crowded room.
created_at"2026-04-24T21:03:47.87Z" 4/24/2026, 9:03:47 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11827
moderation_latency(null)
generation_time12353
tokens_prompt46
tokens_completion459
native_tokens_prompt41
native_tokens_completion656
native_tokens_completion_images0
native_tokens_reasoning516
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.019885
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0fee20c67a74a4e00169ebdab3f78081978bd0c002f4027344"
is_byokfalse
latency250
model_permaslug"openai/gpt-5.5-20260423"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777064627-SkKNReC8iwZoqH6xiv3K"
session_id(null)
api_type"completions"
id"gen-1777064627-4muQ5nCGQCbcgNyaYeDi"
upstream_id"resp_0fee20c67a74a4e00169ebdab3f78081978bd0c002f4027344"
total_cost0.019885
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910