Ornith-1.5 Released: Self-Improving Loop Rivals Claude Opus

aftahi_ai · x · 2026-08-20

Ornith-1.5 is a family of open-source LLMs (9B Dense, 35B MoE, 397B MoE) trained with end-to-end self-improving strategies. Its core innovation is a self-improvement loop where the model generates tasks, constructs frameworks, produces solutions, and iterates via reinforcement learning. It achieves SOTA among open-source models on benchmarks like Terminal-Bench (86.1) and SWE-Bench (86 verified), delivering performance comparable to Claude Opus 4.8.

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