by anthropic
Claude Sonnet 5.5 is Anthropic's balanced model for speed and intelligence, a clear step up from Sonnet 5 on coding and knowledge work at a lower cost per task, with adaptive thinking and a 1M-token context window.
Use Claude Sonnet 5.5 with a simple API call. OpenAI-compatible endpoint, EU data residency guaranteed.
const response = await fetch("https://api.eurouter.info/api/v1/chat/completions", {
method: "POST",
headers: {
"Content-Type": "application/json",
"Authorization": `Bearer ${process.env.EUROUTER_API_KEY}`,
},
body: JSON.stringify({
model: "claude-sonnet-5-5",
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.