# Changelog

## Changelog, page 87

18 August18 Aug

- [

    ## Native support for SvelteKit's new OpenTelemetry spans

    SvelteKit natively supports OpenTelemetry tracing on Vercel using \`registerOTel\` from \`@vercel/otel\`.

    Elliott JohnsonSoftware Engineer

    ](/changelog/native-support-for-sveltekits-new-opentelemetry-spans)

- [

    ## Vercel Sandbox increases concurrency and port limits

    Run up to 2000 sandboxes at the same time. Sandbox also now supports listening on up to 4 different ports

    Laurens DuijvesteijnSoftware Engineer

    ](/changelog/vercel-sandbox-increases-concurrency-and-port-limits)

15 August15 Aug

- [

    ## Improved fake hardware detection with Vercel BotID

    Vercel BotID Deep Analysis now uses an updated detection model that expands fingerprinting coverage for bespoke headless browsers and simulated device hardware.

    Andrew QuChief of Software, Vercel

    ](/changelog/botid-deep-analysis-model-improved-for-fake-hardware-detection)

13 August13 Aug

- [

    ## Introducing the Runtime Cache API

    Vercel RuntimeCache API that's available in all runtimes, including build, edge, middleware, & serverless.

    Luba Kravchenko, Kelly Davis

    ](/changelog/introducing-the-runtime-cache-api)

12 August12 Aug

- [

    ## Claude Sonnet 4 now supports 1M token context in Vercel AI Gateway

    You can now leverage Claude Sonnet 4's updated token context window with Vercel's AI Gateway with no other provider accounts required.

    Walter Korman , Sam Chitgopekar, and 1 other

    ](/changelog/claude-sonnet-4-now-supports-1m-token-context-in-vercel-ai-gateway)

- [

    ## Auto-recharge available in AI Gateway

    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.

    Jeremy Philemon, Walter Korman , and 1 other

    ](/changelog/auto-recharge-available-in-ai-gateway)

- [

    ## Vercel's bot verification now supports Web Bot Auth

    Vercel's bot verification system now supports Web Bot Auth, a proposal that leverages HTTP Message Signatures, enabling Vercel to verify traffic automation from dynamic and distributed sources.

    Sage AbrahamSoftware Engineer

    ](/changelog/vercels-bot-verification-now-supports-web-bot-auth)

- [

    ## Vercel BotID now leverages Vercel's verified bot directory

    Vercel BotID is an invisible CAPTCHA that protects against sophisticated bots without showing visible challenges or requiring manual intervention. It now catches verified bots and allows users to control the experience.

    Andrew Qu, Sage Abraham

    ](/changelog/vercel-botid-now-leverages-vercels-verified-bot-directory)