GPT-5.6 Internal Benchmarks Exposed: Multi-Agent Collaboration and Doubled Kernel Optimization
imjustnewatai · x · 2026-07-29
The author provides specific evidence links and data to support the previous GPT-6 predictions:
- Multi-Agent & Benchmarks: GPT-5.6 utilizes a four-agent Ultra architecture, achieving 91.9% on Terminal-Bench.
- Internal R&D Efficiency: Internally, its RSI Index rose from 41.7% to 57.9%, and KernelGen score jumped from 29.3% to 61.1%. GPT-5.5 also helped write serving heuristics that increased generation speed by over 20%.
- Current Bottleneck: GPT-5.6 remains below OpenAI’s 'High' AI self-improvement threshold; while it can discover better training strategies, it struggles to compound them reliably.
Related event: OpenAI Signals Hint at GPT-6 as Multi-Agent Project Model(2 posts)→
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