Docs
Change one base URL. Keep your SDK.
How to connect your app, see spend in one place, and check every saving. Point the OpenAI SDK at Parezen, tag requests if you like, and the gateway routes, caches and records each call. The gateway runs inside the Parezen API at api.parezen.com, served only over TLS. It calls each provider with your own key and records tokens and cost from the provider's own usage fields. Provider keys are stored with envelope encryption, shown only by their last four characters and never logged, and every key and organisation is rate-limited. Parezen accepts a provider key only while all three protections are on.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.parezen.com/v1",
apiKey: process.env.PAREZEN_API_KEY, // pz_ key. Workspace and environment come from this key.
});
await client.chat.completions.create({
model: "anthropic/claude-sonnet-4.5",
messages: [{ role: "user", content: "Summarise the latest customer ticket." }],
});Start here
Run the gateway
Hosted Quickstart
Change one URL and bring your own provider keys. Parezen runs the gateway at api.parezen.com.
OpenCloud platforms
Models you already buy through Bedrock, Azure OpenAI or Vertex.
OpenSDKs and frameworks
Snippets for Node, Python, LangChain and LlamaIndex. Only the base URL and key change.
Open
Savings and data
How savings are verified
Baseline, price versions, the evidence ladder and the match against your provider bill.
OpenLever guide
Every way to spend less, what it changes, and the stop that guards it.
OpenFail-open pattern
Retry around Parezen only when it cannot be reached. Never around a budget hard stop.
OpenData handling
Metadata only by default. What is stored, where, and for how long.
Open