Run: 2026-04-24-01KQ0PH1JFK2S3QGHZX2WPJQQH

Run Details

Duration:
8.8s
Cost:
$0.014035
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 Blackwood Manor's windows after midnight. Inside, twelve guests listened as the grandfather clock coughed twice. The lights failed, leaving champagne glasses glowing like trapped moons. Someone screamed upstairs, then footsteps scattered through the velvet darkness. Detective Mara Voss found Lord Blackwood beside the library hearth. His white shirt bloomed red beneath a jeweled letter opener. On the desk, an unfinished note named nobody at all. Yet every guest stared elsewhere, guarding secrets older than grief.
created_at"2026-04-24T21:32:26.07Z" 4/24/2026, 9:32:26 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7591
moderation_latency(null)
generation_time8035
tokens_prompt46
tokens_completion414
native_tokens_prompt41
native_tokens_completion461
native_tokens_completion_images0
native_tokens_reasoning353
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"
usage0.014035
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_073d452777ba12fd0169ebe16a275c8190a55bed26fe1a2b22"
is_byokfalse
latency236
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-1777066346-REzOC3pK6rrGLBDhQJY7"
session_id(null)
api_type"completions"
id"gen-1777066346-scjhDcCVhEFQQOA2Wfy3"
upstream_id"resp_073d452777ba12fd0169ebe16a275c8190a55bed26fe1a2b22"
total_cost0.014035
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