Run: 2026-04-24-01KQ0PEQ3Q3V1GSJGR8N4MH9RF

Run Details

Duration:
12.7s
Cost:
$0.014515
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 silvered the windows as Inspector Vale entered Blackthorn Hall. The chandelier trembled, scattering light across portraits of unsmiling ancestors. At midnight, the guests discovered Lord Ashcombe beside the fireplace. His white dinner jacket bloomed with one dark crimson rose. No weapon appeared, only ash drifting from the cold grate. Lady Merrow whispered that the dead man had been laughing. Somewhere upstairs, a locked door clicked softly, then fell silent. Vale removed his gloves and asked who hated him most.
created_at"2026-04-24T21:31:09.824Z" 4/24/2026, 9:31:09 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11383
moderation_latency(null)
generation_time12443
tokens_prompt46
tokens_completion445
native_tokens_prompt41
native_tokens_completion477
native_tokens_completion_images0
native_tokens_reasoning369
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"
usage0.014515
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_00b4b8e04cb9ac650169ebe11de8ac81959860faac31d4a27a"
is_byokfalse
latency353
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-1777066269-4jmfSyfSptnu2Q3v3GeK"
session_id(null)
api_type"completions"
id"gen-1777066269-6eFcJhhxf9IjvSLVEYkm"
upstream_id"resp_00b4b8e04cb9ac650169ebe11de8ac81959860faac31d4a27a"
total_cost0.014515
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
sentences8
wordCounts
010
110
210
310
410
510
610
710