One API,every model
Every LLM through one interface
Use one OpenAI-compatible API for GPT, Claude, Gemini, Grok, and Korean models. Billing is in KRW.

Sign up, then change one base_url
Sign up
Join with email, Kakao, or Naver. No card is required.
Top up
Recharge in KRW. Tax invoices are issued automatically.
API key
Create a plm_ key and change only the base_url to start calling models.
One API, Korean defaults
ONE API
One OpenAI-compatible API for GPT, Claude, Gemini, Grok, and Korean models.
Availability
Automatic retry and same-tier fallback when a provider has an outage.
Live KRW costs
Each response shows its KRW cost in real time.
PIPA masking
Real-time sensitive data masking for Korean privacy requirements.
Made for use in Korea
| Item | PleumRouter | OpenRouter |
|---|---|---|
| Billing currency | KRW ₩ | USD $ |
| Tax invoice | Automatic | Unavailable |
| Payment methods | KRW (card/account) | Overseas cards only |
| Business verification | National Tax Service verification | Unsupported |
| PII masking | Automatic / toggleable | Unsupported |
| Social login | Kakao · Naver | Unsupported |
Pay as you go, in KRW
Model markup
0%
At cost
Top-up fee
3%
Per top-up
FX fee
0.5%
Fixed rate
Signup bonus
₩1,000
On signup
First-payment bonus
₩5,000
On your first payment
Keep the OpenAI SDK. Change only base_url.
from openai import OpenAI
client = OpenAI(
base_url="https://router.pleum.ai/v1",
api_key="plm_...",
)
resp = client.chat.completions.create(
model="gpt-5.5",
messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)It behaves like infrastructure
Supported models
Supported providers
Availability target
FX fee (fixed)
Supported providers