Run: 2026-04-24-01KQ0N12JXMRXZ3BQMWTN64YSK

Run Details

Duration:
11.8s
Cost:
$0.022825
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 polished the manor windows when Inspector Vale discovered blood. It pooled beneath Lord Ashcroft's portrait, black under trembling lamplight. The victim sat upright, smiling faintly despite the silver knife. Around him, seven guests pretended shock with rehearsed care tonight. Thunder covered the ticking clock and someone's strangled breath nearby. Vale noticed muddy footprints crossing carpets, leading mysteriously from nowhere. A shattered glass glittered beside a sealed, untouched crimson envelope. Before Vale spoke, the lights died, and someone laughed softly.
created_at"2026-04-24T21:06:14.251Z" 4/24/2026, 9:06:14 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11118
moderation_latency(null)
generation_time11681
tokens_prompt46
tokens_completion415
native_tokens_prompt41
native_tokens_completion754
native_tokens_completion_images0
native_tokens_reasoning643
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"
usage0.022825
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0742e9d96e5302060169ebdb46540c81908705eb7c59b48a70"
is_byokfalse
latency235
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-1777064774-rU5rE1OQx3trMPcWtyBO"
session_id(null)
api_type"completions"
id"gen-1777064774-PlLXBYssX04gQEtOgkmM"
upstream_id"resp_0742e9d96e5302060169ebdb46540c81908705eb7c59b48a70"
total_cost0.022825
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