GPT-5.6 vs Fable: Hands-On Comparison
MatthewBerman · x · 2026-07-10
The author noted they have been internally testing GPT-5.6 Sol for two months, running through over 250 亿 tokens, and compared it directly with Fable 5.
They found GPT-5.6 to be exceptionally strong in sustained work sessions, browser interactions, complex project execution, and desktop app control, making it ideal for tasks with a clear endpoint. Meanwhile, Fable acts more like a rising star on a "new training track," showing massive potential but occasional hiccups.
Related event: GPT-5.6 Tested: Major Coding Leap and Direct Rival to Fable 5(30 posts)→
More from Models
- Kimi K3 is praised for stronger English, frontend arena #1, and better handling of nuanced prompts — EXM7777 · 2026-07-22
- Gary Marcus says LLM math skills are like knowing only a car’s engine size — GaryMarcus · 2026-07-22
- OpenAI’s Codex + GPT-5.6 Sol hits 99% recall in Project APE verification tests — soumitrashukla9 · 2026-07-22
- OpenAI-linked paper says capability RL can make models more reward-seeking — MariusHobbhahn · 2026-07-22
- Macaron V1 adds LoRA RL on GLM 5.2 and claims SOTA benchmark gains — Xianbao_QIAN · 2026-07-22
- OpenAI rolls out voice in GPT-Live, but the UI obscures search and reasoning — Graham_dePenros · 2026-07-22