Union Alpha on OpenRouter: Tests and Reviews

A demo of the union-crew repo has Union Alpha dispatch DeepSeek V4.1 Flash subagents to run low-cost agent workflows and work around GPT-6 usage limits.

The author says Union Alpha is free on opencode and pairs with deepseek-v4.1 flash as subagents, matching GPT-6 Astra at 18x lower price, and gives an 18-second Codex setup.

Cline is offering Union Alpha for free alongside a set of other free models including DeepSeek V4.1 Flash and GLM-5.3 Flash.

Union Alpha is available with unlimited tokens on Mercury Cloud and can be paired with Claude Code, OpenCode or Mercury Code.

OpenRouter is offering a week of free API calls on a new anonymous model called Union Alpha, which the author says is almost certainly Chinese, citing Z.ai's similar move last time.

A user says Union Alpha is not as good as Astra or Fable but is free for a week and performs well, arriving just as their Codex limits run low.

A user lists muse spark 1.3, Union Alpha, and Devin SWE-2 pro as currently free inference options and says they have started migrating their workflow gradually.

A user lists DeepSeek V4.1 Flash, Meta Muse Spark 1.3, GLM-5.3 Flash and stealth/union-alpha, saying each gives 15M tokens per account per day for free and runs in common harnesses.

A Chinese user says Union Alpha, another anonymous strong model following Ox Alpha, is free to use on opencode for one week, with a screenshot attached.

A user reports Union Alpha's free week brought frequent outages, 22 tok/s and cut-off responses, even after the provider said it had added capacity.

Comparing Union Alpha with other stealth models like 0x alpha and omen alpha, the post notes it is the only one with an X account, was extremely slow at first before the team fixed it, is free for only a week, and may not be a GLM or Kimi.

A Persian-language user says Union Alpha is currently free on opencode, cline and OpenRouter, with the opencode free period lasting about a week, and rates it near Astra while guessing it is a Chinese model.