LLM Tuning Challenges: User Experiences with OpenAI's Latest Model

product #llm 🏛️ Official|Analyzed: Mar 12, 2026 18:31•

Published: Mar 12, 2026 18:00

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1 min read

Analysis

Users are actively experimenting with the latest OpenAI models, sharing insights on how these models respond to specific instruction sets. This user feedback provides valuable information for the continued development and improvement of Large Language Models. Such user experience data is critical for refining future releases.

Key Takeaways

•Users are reporting challenges in getting the latest OpenAI models (5.4) to adhere to custom instructions.
•The issues appear to affect aspects like tone, structure, and avoiding specific output formats.
•The poster is following OpenAI's own prompt engineering guidelines when experiencing difficulties.

Reference / Citation

"Much like 5.1 and 5.2, 5.4 Thinking does not want to follow simple instructions on tone such as altering Flesch Score."

R

r/OpenAIMar 12, 2026 18:00

* Cited for critical analysis under Article 32.

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Source: r/OpenAI