GPT-5.6 Can Retain Reasoning Context Across Turns
nikunjhanda · x · 2026-07-14
Reports indicate that a quiet but significant update in GPT-5.6 is the ability to retain reasoning context across turns.
The impacts include:
- Better KV cache hit rates, thereby reducing latency and costs.
- Eliminating the need to repeatedly perform reasoning during long tasks.
- In complex environments, follow-up actions can better sustain the previous hidden thinking.
The quote also mentions that many lab APIs discard reasoning from previous turns. While this mechanism offers the benefit of "continuous compression," it can also lead to repeated reasoning and cache misses; the OpenAI Responses API has explicit constraints regarding this.
More from Models
- Grok 4.5 is now free inside Cursor, the popular AI coding IDE — mark_k · 2026-07-21
- GPT often converges on the same near-miss ideas in math problems — yacineMTB · 2026-07-21
- Eno Reyes says model distillation is basically unstoppable — LangChain · 2026-07-21
- Sakana says multiple diffusion models plus MCTS beat test-time scaling on coding and math — SakanaAILabs · 2026-07-21
- OpenAI hackathon project stalls as Codex struggles on voice, while Claude spots the issue — ColleenMBrady · 2026-07-21
- Kimi K3 lands exactly on China’s 2-year AI capability trend line — peterwildeford · 2026-07-21