Run: 2026-04-24-01KQ0MR2XY67MCZATKPM0XDYXF

Run Details

Model:
GPT-5.5
Duration:
2.8s
Cost:
$0.002545
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver across Harrowgate. Detective Mara Vale arrived late. Lanterns shivered beside the fountain. Guests whispered beneath black umbrellas. Inside, the orchestra played waltzes. Lord Bellamy lay quite dead. Blood darkened his white waistcoat. Nobody had heard the shot. His daughter smiled too calmly. Mara noticed one missing cufflink.
created_at"2026-04-24T21:01:19.688Z" 4/24/2026, 9:01:19 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency662
moderation_latency(null)
generation_time2611
tokens_prompt46
tokens_completion95
native_tokens_prompt41
native_tokens_completion78
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"
usage0.002545
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_08b0e24f19c6f12a0169ebda1fd1b08197bd900574f1ab48b8"
is_byokfalse
latency328
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-1777064479-GXuTK3CUAhpihECk1xg3"
session_id(null)
api_type"completions"
id"gen-1777064479-9NriWmTlCEHxsaFnLnQa"
upstream_id"resp_08b0e24f19c6f12a0169ebda1fd1b08197bd900574f1ab48b8"
total_cost0.002545
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
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95