Syn Pro
Free right now
Frontier
New
Syn Pro is a language model. It is currently free at 1 provider with up to 66K tokens of context.
- Context
- 66K tokens
- Type
- Text
- Free since
- November 8, 2026
Where to use Syn Pro for free
Each row is a separate free endpoint with its own limits.
Quick start
curl https://api.unorouter.com/v1/chat/completions \
-H "Authorization: Bearer $UNOROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "syn-pro:free",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(
base_url="https://api.unorouter.com/v1",
api_key="YOUR_UNOROUTER_API_KEY",
)
reply = client.chat.completions.create(
model="syn-pro:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.unorouter.com/v1",
apiKey: process.env.UNOROUTER_API_KEY,
});
const reply = await client.chat.completions.create({
model: "syn-pro:free",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);Example for UnoRouter. 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 We do not publish our own estimates.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 Syn Pro free?
Yes. As of November 8, 2026, Syn Pro is free at UnoRouter. Each provider has its own limits — see the table above.
What is the context window of Syn Pro?
The largest context among free routes is 65,536 tokens. Some providers cap it lower.
How do I call Syn Pro via API?
Use any OpenAI-compatible client with base URL https://api.unorouter.com/v1, model ID syn-pro:free, and a UnoRouter key.