You can now access Vercel's Runtime Cache via API.

The Runtime Cache is an ephemeral cache for storing and retrieving data across Functions, Routing Middleware, and Builds within the same region. It supports tag-based invalidation for precise and efficient cache control.

You can get started with the API like this:

import { getCache } from "@vercel/functions";

export async function GET(request) {
  const cache = getCache();
  const cacheKey = 'blog';

  const value = await cache.get(cacheKey);

  if (value) {
    return value;
  }

  const res = await fetch("https://api.vercel.app/blog");
  const originValue = await res.json();

  await cache.set(cacheKey, originValue, {
    ttl: 3600,
    tags: ['blogs'],
  });

  return originValue;
}

You can monitor hit rates, invalidation patterns, and storage usage across your applications in the Observability dashboard's Runtime Cache tab.

Runtime Cache reads and writes are billed regionally based on the runtime region.

Learn more about Runtime Cache in the docs.

You can now leverage Claude Sonnet 4's updated 1 million-token context window with Vercel's AI Gateway with no other provider accounts required. This release from Anthropic enables significantly larger inputs such as full codebases (~75,000+ lines) or large document sets.

AI Gateway lets you call the model with a consistent unified API and just a single string update, track usage and cost, and configure performance optimizations, retries, and failover for higher than provider-average uptime.

To use it with the AI SDK v5, start by installing the package:

pnpm i ai

Then set the model to anthropic/claude-4-sonnet:

import { streamText } from 'ai';
import { largePrompt } from './largePrompt.ts';

const result = streamText({
  headers: {
    'anthropic-beta': 'context-1m-2025-08-07',
  },
  model: 'anthropic/claude-4-sonnet',
  prompt: `You have a big brain. Summarize into 3 sentences: ${largePrompt}`,
  providerOptions: {
    gateway: { only: ['anthropic'] },
  },
});

Includes built-in observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.

To deliver high performance and reliability to Claude Sonnet 4, AI Gateway leverages multiple model providers under the hood, including Anthropic and Bedrock.

Learn more about AI Gateway and view the new AI Gateway model leaderboard.

Vercel AI Gateway now supports automatic credit recharging (top-ups), optionally refilling your balance before it runs out to keep your apps running without interruption.

Auto-recharge is off by default and can be enabled or updated anytime in the AI Gateway dashboard or team billing settings. Set your top-up amount and trigger balance, optionally add a monthly spend limit, and your credits will automatically refill.

Learn more about AI Gateway.