Union Alpha is a multimodal model built for research, coding, and agentic workflows, while delivering frontier-level performance across a broad range of general-purpose tasks. Union Alpha is a stealth model....
With CoreAI, you can start chatting with Union Alpha instantly — no separate subscription needed. CoreAI lets you chat with Union Alpha alongside 300+ other AI models from Stealth and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 427 chat models CoreAI serves, Union Alpha sits at #188 for context capacity — 262K tokens, roughly 196,608 words or 393 pages of text in a single conversation. Released 2026-09-16, it is one of the 1 newest additions to the catalog. It accepts image input alongside text.
Every model in this table is available on CoreAI — open the web app and run the same prompt through Union Alpha and Qwen: Qwen3 Coder Next side by side to judge with your own eyes.
Union Alpha handles 262K tokens of context — roughly 196,608 words, or about 393 pages of text in one conversation.
Union Alpha is one of the budget-friendly options in the CoreAI catalog, included in the same single subscription as every other model.
Yes — Union Alpha accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
No — Union Alpha answers directly without an extended reasoning phase, which usually means faster responses.
Open the CoreAI web app or the iOS/Android app, pick Union Alpha in the model selector, and chat — no API key, no per-token billing. One subscription covers Union Alpha and 300+ other models.
The closest alternatives on CoreAI are Qwen: Qwen3 Coder Next — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
Chat with Union Alpha and 300+ other AI models — all in one app.