Claude Haiku 4.5 is now available in the AI Gateway

Claude Haiku 4.5 is now available through Netlify’s AI Gateway — no extra setup required.

You can use the native Anthropic SDK without managing API keys or external accounts.

Here’s how to use it today in a Netlify Function with the Anthropic SDK:

import Anthropic from "@anthropic-ai/sdk";

export default async function handler(req: Request) {
	const body = (await req.json().catch(() => null)) as {
		message?: string;
		model?: string;
	} | null;

	const input =
		body?.message ??
		"Give me pros and cons of using claude-haiku-4-5-20251001 over other models.";
	const model = body?.model ?? "claude-haiku-4-5-20251001";

	const anthropic = new Anthropic();

	const response = await anthropic.messages.create({
		model,
		max_tokens: 1024,
		messages: [
			{
				role: "user",
				content: input,
			},
		],
	});

	return Response.json({ answer: response.content[0] });
}

export const config = {
	path: "/anthropic",
};

This is supported across Edge, Background, and Scheduled Functions and includes features like Rate-Limiting, access to Netlify’s advanced caching primitives, and many others.

Learn more in the AI Gateway docs.