Union Alpha
#52 en Modèles de langage FrontierUnknown · alpha · 10× · vu le 19 sept. 2026
40
Momentum
Union Alpha is an anonymous "stealth" AI model that appeared on OpenRouter and OpenCode on September 16, 2026, without a provider lab being publicly named. It is a multimodal model (text and image input, text output) with Tool-Calling support, positioned for coding, research, and agentic workflows. During the preview phase, usage is free; future pricing is listed as "expected" on the official product page. Independent Benchmarks are currently limited in verification, with information largely sourced from the operator itself or aggregators such as OpenRouter and the unofficial information site union-alpha.com.
Historique du momentum
21.06.19.09.
Fonctionnalités
| Key Benchmark (%) | LiveBench overall: 76.1 (rank 26/58); GPQA Diamond: 90.9% |
| Context Window (Tokens) | 262,144 tokens (max output: 131,072 tokens) |
| License | Not open-weight; hosted inference only, no weights or license published |
| Multimodality | Text and image input, text output; supports tool calling and structured output |
| Platform | Available via OpenRouter and OpenCode Zen (hosted API, no downloadable weights) |
| Price per 1M Tokens | Free during preview ($0); expected future pricing: $1.25 input / $6.25 output per 1M tokens |
| Release Date | September 16, 2026 |