plaingateway is an LLM API gateway: one key and one OpenAI-compatible API for every major model, billed at the provider's list price with 0% fee on credits. It uses the OpenRouter API, so you switch by changing the base URL. Own keys are free.
What it is
In November 2026, one key reaches 26 models from 10 providers, including Anthropic, OpenAI, DeepSeek, Z.ai and MoonshotAI.
How it works
The API matches OpenRouter: the same paths, request fields, response shapes, model ids and errors. You switch by changing the base URL and the key. The chat completions, completions, messages and responses endpoints are all served, so OpenAI-compatible and Anthropic-compatible clients both connect. Each model has one pinned host. The X-PG-Host header names the host on every response. Every response also carries its cost, in the body and in a header.
Who it is for
Coding-agent users point Claude Code, Cline, Kilo Code, OpenCode or Codex CLI at the new base URL. Chat and roleplay users paste it into SillyTavern or JanitorAI. App builders change one setting in the OpenAI or Anthropic SDK. Anyone can invite others and earn from it.
Data and safety
We do not store prompts or answers, and we do not train on them. We keep a record of each request, without its content, for 7 days. The host that serves a request keeps data under its own policy. Each model page names the host, so you know who sees the prompt.
Pricing
Inference is billed at the provider's list price. OpenRouter also bills list price. Its cost is a fee when you buy credits: 5.5% on Standard and 8% on Business. Our Free plan runs on your own provider keys, with 0% fee, no cap and no card. Our Standard plan is prepaid credits with 0% fee on credits. The smallest top-up is $5, and a first top-up of $5 or more gets a $5 bonus. On paid plans, your own keys carry no fee up to $25,000 of list-price inference a month. Above that, the fee is 2% of list. The provider's rate limits pass through, with no plan limit on top.
Invites
Invite one account that funds $5 or more, and you pay 10% below list for 12 months. Invite three, and you pay 20% below list. You also earn 2% of each invited account's top-ups for 12 months.
