Run: 2026-03-18-01KM08AW1RVAGG5VRY640A6FW4

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.4s
Cost:
$0.001205
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 glossed the station windows. Detective Mara found the body. Blood pooled beneath the clock. No one heard the scream. Yet someone had locked exits. Inside, the killer still waited.
created_at"2026-03-18T10:37:18.278Z" 3/18/2026, 10:37:18 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3283
moderation_latency(null)
generation_time3345
tokens_prompt46
tokens_completion198
native_tokens_prompt41
native_tokens_completion261
native_tokens_completion_images0
native_tokens_reasoning211
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"
usage0.00120525
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0ea536a69cba93ee0169ba805e5b5c81948166b0afaa1304fc"
is_byokfalse
latency202
model_permaslug"openai/gpt-5.4-mini-20260317"
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-1773830238-aDxHYE1vO0Cy547TUhCT"
upstream_id"resp_0ea536a69cba93ee0169ba805e5b5c81948166b0afaa1304fc"
total_cost0.00120525
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
05
15
25
35
45
55