Run: 2026-04-24-01KQ0NETCTX6MD5224PWBGJHGM

Run Details

Model:
GPT-5.5
Duration:
2.9s
Cost:
$0.002875
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
98.30% 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 cobblestones like glass. Inspector Vale arrived before midnight. The manor windows burned yellow. Inside, the guests whispered nervously. Sir Edmund lay beneath roses. Blood darkened his ivory waistcoat. No weapon waited beside him. Only one clock had stopped. It marked nine seventeen precisely. Everyone claimed they heard thunder. But the sky stayed silent. Then Clara found the envelope. Her name was written inside.
created_at"2026-04-24T21:13:44.61Z" 4/24/2026, 9:13:44 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency663
moderation_latency(null)
generation_time2840
tokens_prompt46
tokens_completion119
native_tokens_prompt41
native_tokens_completion89
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"
usage0.002875
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0bf424dee38edf7a0169ebdd08b160819488efb571896fe849"
is_byokfalse
latency297
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-1777065224-Rbbjhhj5dfYfMNLf4BS1"
session_id(null)
api_type"completions"
id"gen-1777065224-YXqENbfvEqAD3OYWGPQQ"
upstream_id"resp_0bf424dee38edf7a0169ebdd08b160819488efb571896fe849"
total_cost0.002875
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
98.30% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
06
15
25
35
45
55
65
75
85
95
105
115
125