Union Alpha posts a personal best on RocketLeagueBench

am.will @LLMJunkyOriginally posted 2026.09.17

Open original on X

I tested @OpenRouter's new Union Alpha stealth model on RocketLeagueBench and wow, I can genuinely say this is one of the best results I've gotten from any model. If this is an open weights model, I can confidently say it's the best result I've ever gotten from any open model. In this particular test/bench it beats models like: Grok 4.6 Muse 1.2 Muse 1.3 Gemini 3.7 Flash Gemini 3.8 Flash GPT 5.5 Opus 4.7 Opus 4.8 This is probably around the same result that I got from Fable 5. Keep in mind this is one test, and in a vacuum that doesn't mean much, but I'm bullish on this one.