Mystery Stealth Model 'Union Alpha' Tops DeepSWE Leaderboard
A stealth model dubbed Union Alpha appeared on OpenRouter, scoring 74% on DeepSWE to rival GPT-6-level models while being free with no data retention, though some argue the benchmark is saturated.
2026-09-17 ~ 2026-09-17 · 4 related posts
- Episode 1: Mystery stealth model Union Alpha launches free, sparking identity speculation(2026-09-16, 16 posts)
- Episode 2: Mystery Stealth Model 'Union Alpha' Tops DeepSWE Leaderboard(2026-09-17, 4 posts)
- Episode 3: The Mystery of Cloudflare's Stealth Model Union Alpha(2026-09-17, 5 posts)
- Episode 4: Hands-On Test Suggests Anonymous Model union-alpha Is No Flagship(2026-09-17, 2 posts)
- Episode 5: Mystery Model Union Alpha Unmasked as Pareto 26.9 Within a Day(2026-09-18, 2 posts)
- Mystery model 'Union Alpha' tops DeepSWE, claiming GPT-6-class capability at DeepSeek-level prices — daniel_mac8 · 2026-09-17
- Union Alpha scores 74 on DeepSWE matching GPT-6 Astra, but benchmark may be saturated — brandon_galang · 2026-09-17
- Stealth model Union Alpha scores 74% on DeepSWE, beating GPT-5.6 Sol at lower cost — ZeroStateReflex · 2026-09-17
- Stealth Model Union Alpha Benchmarked: Matches Frontier Models on Agentic Coding Tasks — Prompt Engineering · 2026-09-17