Migrating from GPT-4o to GPT-5.1: Handling RAG Agent Response Style Regressions
IncreaseLocal2574 · reddit · 2026-08-03
A developer reported significant response-style regressions when migrating a production RAG agent from GPT-4o to GPT-5.1. Despite using the same system prompt and knowledge base, GPT-5.1 generates much longer, highly structured outputs, often adding unrequested headings, summaries, and tables.
While the answers remain factually correct, the verbose format negatively impacts the end-user experience. The developer is seeking community advice on production migration strategies, asking whether issues were solved via prompt redesign, few-shot examples, verbosity parameters, or output validators.
More from coding & agent
- Anthropic Releases Course on Building Reusable Claude Agent Skills — HeyAmit_ · 2026-08-03
- Open-Source Quadruped Robot Framework OpenCat Hits 5k Stars — tom_doerr · 2026-08-03
- Intent Engineering Framework: Preventing AI Agents from Going Rogue — PawelHuryn · 2026-08-03
- MireloAI Launches MCP to Let AI Agents Generate Sound Effects — aziz4ai · 2026-08-03
- Four Guardrail Mechanisms to Keep AI Agents Safe — goyalshaliniuk · 2026-08-03
- LlamaFactory Creator Open-Sources PenguinHarness: Self-Evolving Agents for $0.02 — 机器之心 · 2026-08-03