In a post on X dated September 16, 2026, @opencode says Union Alpha, described as a “stealth model,” is free for the next week. The announcement associates the model with agentic coding, image support and “no data training,” but does not provide access instructions, an exact end date or technical details.

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What the announcement says about Union Alpha

The post presents Union Alpha as a model available at no cost for a limited one-week period. It does not say whether the offer is open to everyone, whether usage limits apply or what pricing will follow the free period.

The announcement also describes Union Alpha as being built for “agentic coding.” In this context, that phrase suggests a focus on coding workflows in which an AI system can help carry out multi-step development tasks, rather than only respond to isolated coding questions. The post does not explain which tasks the model can perform or provide a demonstration or performance result.

The account says the model supports images as well. That indicates the announcement associates Union Alpha with image inputs or image-related capabilities, but it does not specify supported formats, limits or how image support connects to coding work.

What “no data training” leaves unclear

The post uses the phrase “no data training,” but does not define it. It could refer to whether user data is used to train models, but the announcement does not explain its retention, logging, review or broader data-handling practices.

Readers should therefore treat the phrase as an announced policy description, not as a complete privacy specification. The post supplies no terms, documentation or additional explanation that would establish what data is covered or how long it may be stored.

What remains unclear

The brief announcement does not provide:

  • an exact date or time when the free period ends;

  • instructions for accessing Union Alpha;

  • usage limits or supported plans;

  • pricing after the free week;

  • benchmarks, independent tests or other performance evidence;

  • architecture details; or

  • a fuller explanation of its coding, image and data practices.

The post invites readers to see what Union Alpha can do, but provides no performance evidence or defined conditions for the free period, the model’s data practices or its capabilities.