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Free Grok 4.3 on Vercel

Call Grok 4.3 free on Vercel — keyless, covered by the $5/month AI Gateway credit.

Updated 6/5/2026Provider trust 98/1002 code examples

About the Model

为什么选择 Grok 4.3？

Grok 4.3 是 xAI 当前的旗舰文本模型，主打实时性与 agentic 能力。

  • 100 万 token 上下文：整本书、超长代码库一次喂入。
  • 实时接入 X 数据：掌握全球此刻正在发生的事，时效性远超训练截止式模型。
  • 强 agentic 工具调用：针对 Colossus 超算集群深度优化。
  • 原生读图：支持图像输入理解。

可在 Vercel（每月 $5 免 Key 额度）免费调用；Cloudflare 免 Key 但付费（AI Gateway 统一计费，按 xAI 原价透传、需先充值）。

How to Access for Free (via Vercel AI Gateway)

免费依据：每月 $5 系统额度

Vercel 为每个团队（含免费 Hobby 个人计划）每月提供价值 $5 的系统层 AI 额度。只要当月用量未超过 $5 等值 token，即可通过 Vercel AI SDK 免 Key 免费调用此模型。

Try it in your browser

Pick a model, paste your own free key, and run. Your key is sent once to call the provider and never stored on our servers.

Pick a model, paste your own free key, and run. Your key is sent once to call the provider and never stored on our servers.

Code Examples

javascript
import { streamText } from 'ai';
// Keyless on Vercel via OIDC; locally set AI_GATEWAY_API_KEY
const { textStream } = streamText({
  model: 'xai/grok-4.3',
  prompt: 'Explain black holes in one sentence.',
});
for await (const chunk of textStream) process.stdout.write(chunk);
curl
curl https://ai-gateway.vercel.sh/v1/chat/completions \
  -H "Authorization: Bearer $AI_GATEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"xai/grok-4.3","messages":[{"role":"user","content":"Explain black holes in one sentence."}]}'
Free Grok 4.3 on Vercel - Free API, Quota & Code | Free AI API