Run: 2026-04-24-01KQ0P66YJE4SZQFGAVNQBVWMG

Run Details

Model:
GPT-5.5
Duration:
2.9s
Cost:
$0.002125
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
94.82% 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 the harbor windows shut with trembling silver thread. Inspector Vale found the first footprint inside the locked pantry. Behind him, the widow poured tea without lifting her veil. At midnight, every clock in Blackthorn House stopped breathing. Then the body coughed once, and the candles went out.
created_at"2026-04-24T21:26:31.128Z" 4/24/2026, 9:26:31 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency824
moderation_latency(null)
generation_time2807
tokens_prompt46
tokens_completion81
native_tokens_prompt41
native_tokens_completion64
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"
usage0.002125
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0f84487609fb97a60169ebe007329c8195bbd9a0d0de058ca6"
is_byokfalse
latency407
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-1777065991-KfrivdhOsSWkGI3Ms9zY"
session_id(null)
api_type"completions"
id"gen-1777065991-DXjZBDkdqGgAkoFsOKt5"
upstream_id"resp_0f84487609fb97a60169ebe007329c8195bbd9a0d0de058ca6"
total_cost0.002125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
94.82% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
010
110
210
39
410