Free Grok 4.20 API
Updated 6/8/2026
xAI Grok 4.20 (reasoning / non-reasoning / multi-agent). Free on Vercel's $5/mo credit; paid-but-keyless on Cloudflare (Unified Billing).
About the Model
Grok 4.20
GROK 4.20 offers a variety of operating gears, adapting to different delay and quality requirements:
- Reasoning: Enable extended reasoning and attack complex tasks (
xai/grok-4.20-0309-reasoning). - non-reasoning: Skip the thinking chain, respond quickly (
xai/grok-4.20-0309-non-reasoning). - multi-agent: Multi-agent synergy (
xai/grok-4.20-multi-agent-0309).
Vercel$5 per month no API API key is requiredFREE;CloudflareAPI key is not required butPaid(Unified billing, billed at the original price of the Provider).
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