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Claude Sonnet 4.5 — Free AI Chat on Rewind.ai
Chat with Claude Sonnet 4.5 for free — no signup, no credit card. Anthropic's Claude Sonnet 4.5 runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.
What is Claude Sonnet 4.5?
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with.
How does Claude Sonnet 4.5 work?
Type your message in the box above and Claude Sonnet 4.5 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 Claude Sonnet 4.5 and other models at any time from the picker at the top.
Is Claude Sonnet 4.5 free?
Claude Sonnet 4.5 is pay-as-you-go at $3.00/M input tokens, but you can use it without paying: every visitor gets 2,500 free tokens a day with no sign up, and a free account raises that to 5,000.