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Grok 4.20 — Free AI Chat on Rewind.ai
Chat with Grok 4.20 for free — no signup, no credit card. XAI's Grok 4.20 runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.
What is Grok 4.20?
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering.
How does Grok 4.20 work?
Type your message in the box above and Grok 4.20 replies instantly — no setup required. Your chat history is saved locally in your browser; sign up free to sync it across devices and get an extra 10,000 tokens. You can switch between Grok 4.20 and other models at any time from the picker at the top.
Is Grok 4.20 free?
Grok 4.20 is a premium model: it runs on tokens from a token pack or paid plan (from $5). The free daily tokens (2,500 a day, 5,000 with a free account) cover Rewind's free models, so you can try the site at no cost.