OpenAI SDK
Import from
supercompat/openai and you get a real OpenAI instance. Every function the OpenAI SDK exposes works — Responses, Assistants, Chat Completions, Embeddings, Files, Vector Stores, everything. The types are the SDK's own types; your editor autocompletes exactly as if you had imported openai directly.The only difference is what the client does on the wire: Supercompat installs a custom
fetch on the instance and routes each request through your adapter stack. The surface your app calls stays untouched.Full SDK support
The client returned by
supercompat() is an OpenAI client. Anything you can call on new OpenAI() you can call here — against any provider. The two surfaces you'll most commonly use:Responses APIclient.responses.create() — the modern OpenAI surface.
Assistants APIThreads, messages, runs, and tool-use round-trips.
Minimal call
import OpenAI from 'openai'
import {
supercompat,
openaiClientAdapter,
openaiResponsesRunAdapter,
memoryStorageAdapter,
} from 'supercompat/openai'
const client = supercompat({
clientAdapter: openaiClientAdapter({ openai: new OpenAI() }),
storageAdapter: memoryStorageAdapter(),
runAdapter: openaiResponsesRunAdapter(),
})
const response = await client.responses.create({
model: 'gpt-4.1-mini',
input: 'Say hi.',
})
The return type is
OpenAI.Responses.Response. The same client also exposes client.beta.assistants, client.beta.threads, client.chat.completions, and the rest of the SDK.