GPT 5.6 Excels in Code Optimization
jxnlco · x · 2026-07-15
Someone running kernel optimizations with Codex (GPT 5.5) noticed a significant increase in solved problems after switching to GPT 5.6.
They concluded that GPT 5.6 is smarter than Opus and utilizes subagents much more effectively, making it an excellent orchestrator; however, it also burns through usage limits noticeably faster.
More from coding & agent
- Harness engineering is emerging as the execution layer for reliable AI agents — Pavan_Belagatti · 2026-07-21
- DevFest Lisbon keynote will cover Google AI Studio’s latest vibe coding and agentic AI features — gerardsans · 2026-07-21
- Daniel Hanchen’s 2-hour workshop covers open models, reward hacking and RL — danielhanchen · 2026-07-21
- DocETL adds a Python DSL and new tools to clean up long-form LLM outputs — sh_reya · 2026-07-21
- A Codex joke turns into a recursive debate about Cloud Codex — Dimillian · 2026-07-21
- AI-assisted development is widening security backlogs, so teams should measure risk velocity — WeldPond · 2026-07-21