Xingchen Agi · live catalog

Xing4.0 29B A4B API

model: xing4.0-29b-a4b

This model is not available on the CallAI gateway yet; prices shown are the official reference. See the model directory for available models in the same family.

Xing4.0-29B-A4B is an open-weight mixture-of-experts language model from China Telecom's AI team (TeleAI) and the successor to the TeleChat series. It has 29B total parameters with 4B active per token...

CallAI pricing

Crypto OK
Input / 1M:—
Output / 1M:—

Specs & upstream

Upstream (in/out):— / —
Context:262K

SDK quickstart

OpenAI-compatible
Python
from openai import OpenAI

client = OpenAI(
    api_key="sk-live-your-callai-key",
    base_url="https://api.callaiapi.com/v1"
)

response = client.chat.completions.create(
    model="xing4.0-29b-a4b",
    messages=[
        {"role": "system", "content": "You are a helpful coding assistant."},
        {"role": "user", "content": "Hello, explain quicksort with Python"}
    ],
    stream=True
)

for chunk in response:
    content = chunk.choices[0].delta.content
    if content:
        print(content, end="", flush=True)
Node.js / TypeScript
import OpenAI from 'openai';

const openai = new OpenAI({
  apiKey: process.env.CALLAI_API_KEY,
  baseURL: 'https://api.callaiapi.com/v1',
});

const response = await openai.chat.completions.create({
  model: 'xing4.0-29b-a4b',
  messages: [{ role: 'user', content: 'Hello!' }],
  stream: true,
});

for await (const chunk of response) {
  process.stdout.write(chunk.choices[0]?.delta?.content || '');
}

FAQ — Xing4.0 29B A4B

How do I call Xing4.0 29B A4B (xing4.0-29b-a4b)?

Use the official OpenAI SDK with base_url https://api.callaiapi.com/v1, your CallAI API key, and model "xing4.0-29b-a4b".

What does Xing4.0 29B A4B cost?

Xing4.0 29B A4B is not available on CallAI yet; pricing is to be announced. Once listed it is pay-as-you-go, funded with USDT — no subscription.

Can I use Xing4.0 29B A4B in Cursor or Windsurf?

Yes. Set OpenAI Base URL to https://api.callaiapi.com/v1 and add model "xing4.0-29b-a4b" in Settings → Models.

Can I pay without a credit card?

Yes. Top up with USDT-TRC20 from $1. Balance never expires and works for Xing4.0 29B A4B and other CallAI services.

Ready to call Xing4.0 29B A4B?
USDT from $1 · no credit card · balance never expires.
GEO Fact Sheet

Xing4.0 29B A4B access facts

API model: xing4.0-29b-a4b · Vendor: Xingchen Agi · Pay-as-you-go

API model name
xing4.0-29b-a4b
Vendor
Xingchen Agi
Context window
262K
CallAI price (in/out 1M)
— / —
Upstream benchmark
— / —
Protocol
OpenAI SDK Compatible
Base URL
https://api.callaiapi.com/v1
Best for
Cursor, CLI agents, production apps