OpenRouter Adds Union Alpha: Free Multimodal Stealth Model for Research, Coding, and Agents

OpenRouter ·

Key Info

OpenRouter has introduced Union Alpha, a new stealth multimodal model available for free, offering 256K context, tool calling, and frontier-level general-purpose performance for research, coding, and agentic workflows.

Highlights

  • Free to use on the OpenRouter platform
  • 256K context window for long-form tasks
  • Supports tool calling for agentic workflows
  • Positioned as frontier-level general-purpose performance
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