Updated 6/8/2026
xAI flagship text model — 1M-token context, real-time X data, strong agentic tool calling. Free on Vercel ($5/mo); paid-but-keyless on Cloudflare (Unified Billing).
Grok 4.3 是 xAI 当前的旗舰文本模型，主打实时性与 agentic 能力。
可在 Vercel（每月 $5 免 Key 额度）免费调用；Cloudflare 免 Key 但付费（AI Gateway 统一计费，按 xAI 原价透传、需先充值）。
curl https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT_ID/ai/run/xai/grok-4.3 \
-H "Authorization: Bearer $CF_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{"messages":[{"role":"user","content":"Explain black holes in one sentence."}]}'// Cloudflare Worker: no extra key/env; Grok is billed directly by Cloudflare
export default {
async fetch(request, env) {
const res = await env.AI.run('xai/grok-4.3', {
messages: [{ role: 'user', content: 'Explain black holes in one sentence.' }],
});
return Response.json(res);
},
};The following platforms provide free access to Grok 4.3 through free tiers, trial credits, or daily quotas.
Yes. Grok 4.3 is available for free through 2 provider(s) listed below, with no purchase required.
Free access varies by provider — Cloudflare Workers AI: paid; Vercel AI Gateway: Monthly Credits.
Sign up with Cloudflare Workers AI, then create an API key from your dashboard. See the provider details above for the exact steps.
Grok 4.3 is currently available for free via: Cloudflare Workers AI, Vercel AI Gateway.
Help the community by sharing other ways to access this model for free.