Run: 2026-04-24-01KQ0N1PFTQ7WHHD1VM5FEMBYS

Run Details

Model:
GPT-5.5
Duration:
2.9s
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 through midnight. Detective Mara Vale arrived alone. The library windows glowed amber. Inside, the grandfather clock stopped. Lord Ashcombe lay beneath it. Blood darkened his white cravat. His guests watched, breathing softly. Someone dropped a porcelain cup. It shattered beside muddy footprints. Mara noticed one missing portrait. Then the dead man smiled.
created_at"2026-04-24T21:06:34.626Z" 4/24/2026, 9:06:34 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency590
moderation_latency(null)
generation_time2804
tokens_prompt46
tokens_completion113
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_0f63d08cbec4c9e00169ebdb5ab8a48196b2340d8c6e543563"
is_byokfalse
latency329
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-1777064794-asa7BlxHHSgWWnoDjSk5"
session_id(null)
api_type"completions"
id"gen-1777064794-fhc5lIAmQOSy6L2OSYDv"
upstream_id"resp_0f63d08cbec4c9e00169ebdb5ab8a48196b2340d8c6e543563"
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
sentences11
wordCounts
05
15
25
35
45
55
65
75
85
95
105