Open-Weight Ornith-1.5 Matches Claude Opus with 397B MoE Model
Teknium · x · 2026-08-20
Ornith-1.5 is a new open-source LLM family featuring 9B Dense, 35B MoE, and 397B MoE variants. It achieves state-of-the-art performance among open models and delivers results comparable to Claude Opus 4.8 in reasoning, agentic, and coding tasks.
Key Benchmarks:
- Terminal-Bench 2.1: 86.1
- SWE-Bench Verified: 86
- DeepSWE: 56
- HLE: 44.6
- ClawEval: 81.4
- Tool Decathlon: 71.2
Highlights:
- Trained with end-to-end self-improving strategies.
- Model cards ship with Hermes Agent setup out of the box, ready for local deployment (9B to 397B).
Related event: Ornith-1.5 Release: 397B MoE Self-Improvement Targets Claude Opus(24 posts)→
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