LLM Perks

Xing4.0 29B A4B

XingChen
Free right now Mid-size New
Long context

Xing4.0 29B A4B is a language model with 29B parameters from XingChen. It is currently free at 1 provider with up to 262K tokens of context.

Developer
XingChen
Parameters
29B / 4B active
Context
262K tokens
Type
Text
Free since
October 16, 2026

Where to use Xing4.0 29B A4B for free

Each row is a separate free endpoint with its own limits.

ProviderContextLimitCard
OpenRouter
xingchen-agi/xing4.0-29b-a4b:free
262K Free tier No Open

Quick start

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xingchen-agi/xing4.0-29b-a4b:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Example for OpenRouter. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.

Benchmarks

This model is not on the Artificial Analysis leaderboard yet. We do not publish our own estimates.

Similar free models

FAQ

Is Xing4.0 29B A4B free?

Yes. As of October 16, 2026, Xing4.0 29B A4B is free at OpenRouter. Each provider has its own limits — see the table above.

What is the context window of Xing4.0 29B A4B?

The largest context among free routes is 262,144 tokens. Some providers cap it lower.

How do I call Xing4.0 29B A4B via API?

Use any OpenAI-compatible client with base URL https://openrouter.ai/api/v1, model ID xingchen-agi/xing4.0-29b-a4b:free, and a OpenRouter key.