Run: 2026-03-09-01KKACCFG75J0N62ZBYBZJK7D7

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.9s
Cost:
$0.004197
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 worried the manor windows. Inside, candles shivered above supper. Lady Harrow smiled behind lace. Then the clock missed midnight. A scream split silver silence. Wine darkened the Persian carpet. Lord Vale lay impossibly still. Everyone noticed his empty ring.
created_at"2026-03-09T22:44:47.765Z" 3/9/2026, 10:44:47 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4441
moderation_latency(null)
generation_time4811
tokens_prompt46
tokens_completion72
native_tokens_prompt41
native_tokens_completion273
native_tokens_completion_images0
native_tokens_reasoning214
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0041975
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0bf9fbf434768d510169af4d5fd61881909561469dfd736a94"
is_byokfalse
latency200
model_permaslug"openai/gpt-5.4-20260305"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773096287-p5Yks0ZIfnlgNnLMOxHi"
upstream_id"resp_0bf9fbf434768d510169af4d5fd61881909561469dfd736a94"
total_cost0.0041975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
05
15
25
35
45
55
65
75