Run: 2026-04-24-01KQ0P8802JM9FTYMWQSCC2CTG

Run Details

Duration:
9.4s
Cost:
$0.016555
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 after midnight. Detective Mara Voss arrived alone, carrying coffee and old suspicions. Inside, the grandfather clock had stopped at twelve forty-seven precisely. Lord Ashcombe lay beneath it, smiling with bloodless surprise forever. An ivory dagger pinned his confession to the carpet below. Yet every signature on the page belonged to someone else. The household waited in the library, breathing dust and fear. Mara noticed one chair empty, still warm, facing the fire.
created_at"2026-04-24T21:27:37.74Z" 4/24/2026, 9:27:37 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8953
moderation_latency(null)
generation_time9199
tokens_prompt46
tokens_completion413
native_tokens_prompt41
native_tokens_completion545
native_tokens_completion_images0
native_tokens_reasoning436
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"
usage0.016555
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_02755f9f5944e3e90169ebe049d64881909813c94550111876"
is_byokfalse
latency315
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-1777066057-56wDLmTXYZuFbABHYn90"
session_id(null)
api_type"completions"
id"gen-1777066057-8FJ7ZOM9zGpVuv8DRbAI"
upstream_id"resp_02755f9f5944e3e90169ebe049d64881909813c94550111876"
total_cost0.016555
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