OpenAI SDK - Triw

Any client that speaks the OpenAI wire format works unchanged against Triw: openai (Python, Node, Go, .NET), LangChain, LlamaIndex, Vercel AI SDK, and anything else built on /v1/chat/completions.

Install

pip install openai

npm install openai

Configure

Only the base URL and key change:

Setting	Official OpenAI	Triw
Base URL	`https://api.openai.com/v1`	`https://router.triw.io/v1`
API key	`sk-proj-...` from OpenAI	`sk-...` from the Triw console
Model	OpenAI ids	ids your key can see in `GET /v1/models`

from openai import OpenAI

client = OpenAI(
    api_key="sk-...",                      # Triw key
    base_url="https://router.triw.io/v1",  # not api.openai.com
)

resp = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[{"role": "user", "content": "Summarise this in one line: ..."}],
)
print(resp.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.TRIW_API_KEY,
  baseURL: "https://router.triw.io/v1",
});

const resp = await client.chat.completions.create({
  model: "gpt-4o-mini",
  messages: [{ role: "user", content: "Summarise this in one line: ..." }],
});
console.log(resp.choices[0].message.content);

curl https://router.triw.io/v1/chat/completions \
  -H "Authorization: Bearer $TRIW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-4o-mini","messages":[{"role":"user","content":"ping"}]}'

Streaming

stream = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[{"role": "user", "content": "Write a haiku about latency."}],
    stream=True,
)
for chunk in stream:
    delta = chunk.choices[0].delta.content
    if delta:
        print(delta, end="", flush=True)

Triw relays server-sent events as they arrive. If your own proxy sits in front of the client, disable buffering there or deltas will arrive in bursts.

Supported OpenAI routes

/v1/chat/completions, /v1/completions, /v1/responses, /v1/embeddings, /v1/models, /v1/images/generations, /v1/images/edits, /v1/audio/speech, /v1/audio/transcriptions, /v1/audio/translations, /v1/moderations, /v1/rerank, /v1/files, /v1/fine-tunes.

Notes that save debugging time

Do not append /chat/completions to the base URL yourself if the SDK already does it.
organization and project headers from the OpenAI SDK are ignored.
Tool calling, JSON mode, and response_format are passed through to the upstream model. Whether they work depends on the model, not on Triw.
Error bodies follow the OpenAI shape; see Errors for the code table.