Attention — Sep 6, 2026
What caught my attention on Sep 6 (1 item).
GPT-6 Astra: The harness matters more than you think
Prompt Engineering (Article:03:09) - Published 2026-09-03 18:00 - Discovered 2026-09-06 03:09
The video argues that AI agent harnesses—the software layer that controls prompts, tools, memory, and context—can affect performance as much as or more than the underlying model. It uses OpenAI’s GPT-6 Astra and the ARC-AGI 3 benchmark as the central example. Under ARC’s standard, provider-neutral harness, Astra scores 62.7%, while with a harness designed for the model it reaches 99.9%. The differ…