Claude Opus 5 (Fast) — Free AI Chat on Rewind.ai

Chat with Claude Opus 5 (Fast) for free — no signup, no credit card. Anthropic's Claude Opus 5 (Fast) runs in your browser on Rewind.ai, with pay-as-you-go tokens and full API access.

What is Claude Opus 5 (Fast)?

Fast-mode variant of [Opus 5](/anthropic/claude-opus-5) - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

How does Claude Opus 5 (Fast) work?

Type your message in the box above and Claude Opus 5 (Fast) 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 Opus 5 (Fast) and other models at any time from the picker at the top.

Is Claude Opus 5 (Fast) free?

Claude Opus 5 (Fast) is pay-as-you-go at $10.00/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.