Run: 2026-04-24-01KQ0Q0VZNTA2H6E16390BYV52

Run Details

Model:
GPT-5.5
Duration:
1.8s
Cost:
$0.001495
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
96.31% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain polished the midnight platform. Inspector Vale missed her train. Then the stationmaster screamed loudly. Blood darkened the ticket window. A silver locket lay open. Inside, Vale recognized herself.
created_at"2026-04-24T21:41:04.64Z" 4/24/2026, 9:41:04 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency581
moderation_latency(null)
generation_time1688
tokens_prompt46
tokens_completion55
native_tokens_prompt41
native_tokens_completion43
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.001495
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0ac8fb045a98df4a0169ebe370c544819586441739495e40d0"
is_byokfalse
latency311
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-1777066864-p4Nj05YhugVzeLuV15sh"
session_id(null)
api_type"completions"
id"gen-1777066864-O7KNlDfXxknOSG5j5xCZ"
upstream_id"resp_0ac8fb045a98df4a0169ebe370c544819586441739495e40d0"
total_cost0.001495
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
96.31% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
05
15
25
35
45
54