Qwen

Qwen is Alibaba's family of large language models available both as a free web chat and as open-source weights that developers can self-host and fine-tune. The web interface handles conversational tasks, coding problems, mathematical reasoning and lengthy document analysis across dozens of languages. Because Qwen's open models are freely available, they've become a foundational choice for many startups and research teams building specialized AI applications—the backbone of a growing ecosystem of fine-tuned variants adapted for specific domains.

Highlights

• Free web chat with no sign-up required
• Open-weight models available for developers to download and self-host
• Handles coding, math, reasoning and long-form document understanding
• Supports many languages and multilingual tasks
• Powers many community-built fine-tuned models and specialized AI tools

Qwen works for both casual users seeking a free alternative chat and developers building custom AI products. The web chat is completely free; open models are free to download and deploy, though inference costs depend on your hosting choice. For cost-conscious teams and communities building specialized AI tools, Qwen's open approach is a major advantage.