Using Xing4.0 29B A4B on OpenRouter

Implementation guide · Xing4 · China Telecom Artificial Intelligence Research Institute

Serverless
Open Source

OpenRouter exposes Xing4.0 29B A4B through model ID xingchen-agi/xing4.0-29b-a4b:free. Use the setup steps, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call xingchen-agi/xing4.0-29b-a4b:free — see the documentation for request format.
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Code Examples

See OpenRouter documentation for integration details.

Capabilities

ReasoningJSON / Tool useFine-tuning

About Xing4.0 29B A4B

Xing4.0-29B-A4B is an open-weight mixture-of-experts language model from China Telecom Artificial Intelligence Technology Co., Ltd. (TeleAI), the successor to the TeleChat series. It has 29B total parameters with 4B active per token (64 routed experts, 4 active, 1 shared), MLA attention, and a native 256K context (extensible to 512K). Weights are published under Apache 2.0 at Hugging Face XingChen-AGI/Xing4.0-29B-A4B. Open-sourced 2026-09-17.

Full model details →

Model Specs

Released2026-09-17
Parameters29B
Context256K
ArchitectureMixture of Experts

Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA