If you like testing new AI models without immediately worrying about API bills, this one is worth your attention.

OpenRouter has listed Qwen3.6 Plus Preview (free) as a zero-cost model variant, with a 1,000,000-token context window and a positioning that clearly targets reasoning, agent workflows, coding, front-end tasks, and complex problem-solving. According to the model page, it was released on March 30, 2026, and is currently priced at $0 for input and output tokens on OpenRouter.