Xingchen Agi · 262K context
Xing4.0 29B A4B (free) API
Use Xing4.0 29B A4B (free) in the Synaps chat or through one OpenAI-compatible API key. It's free to try without a wallet. No subscription, no card.
Call Xing4.0 29B A4B (free) from code
Synaps speaks the OpenAI Chat Completions format. Point any OpenAI SDK at Synaps and set model to xingchen-agi/xing4.0-29b-a4b:free.
curl https://www.synaps.chat/api/v1/chat/completions \
-H "Authorization: Bearer $SYNAPS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "xingchen-agi/xing4.0-29b-a4b:free",
"messages": [{ "role": "user", "content": "Hello!" }]
}'from openai import OpenAI
client = OpenAI(base_url="https://www.synaps.chat/api/v1", api_key="syn_...")
reply = client.chat.completions.create(
model="xingchen-agi/xing4.0-29b-a4b:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)Privacy
Free models are offered by providers who may log prompts to keep them free. Don't send anything sensitive.
Questions
How much does Xing4.0 29B A4B (free) cost on Synaps?
Xing4.0 29B A4B (free) is free on Synaps, up to 20 messages a day in the chat without a wallet.
Can I pay for Xing4.0 29B A4B (free) with crypto?
Yes. Top up your Synaps balance with ETH on Robinhood Chain or Base, or USDC on Base, from $1. Each message is deducted from that balance. There is no subscription or card.
Is there a Xing4.0 29B A4B (free) API?
Yes. Create an API key on Synaps and call xingchen-agi/xing4.0-29b-a4b:free through the OpenAI-compatible endpoint https://www.synaps.chat/api/v1/chat/completions. Any OpenAI SDK works by changing the base URL.
What can Xing4.0 29B A4B (free) do?
It accepts text and produces text, with a context window of 262K tokens.