by anthropic
Claude Sonnet 4.6 is Anthropic's balanced performance model, offering strong coding, reasoning, and agentic capabilities with 1M context window. A direct upgrade over Sonnet 4.5 with no long-context surcharge.
Use Claude Sonnet 4.6 with a simple API call. OpenAI-compatible endpoint, EU data residency guaranteed.
const response = await fetch("https://api.eurouter.ai/api/v1/chat/completions", {
method: "POST",
headers: {
"Content-Type": "application/json",
"Authorization": `Bearer ${process.env.EUROUTER_API_KEY}`,
},
body: JSON.stringify({
model: "claude-sonnet-4-6",
messages: [
{ role: "user", content: "Hello!" }
],
}),
});
const data = await response.json();
console.log(data.choices[0].message.content);You need AI that won’t create compliance headaches. Your data stays in the EU, GDPR is enforced by default, and every request is routed for the best balance of cost, latency, and uptime, reducing risk while improving performance.