Local Models Output Gibberish in Agent Mode: Why Ability Boundaries Matter

Marblapas · reddit · 2026-08-07

A developer deploying DeepSeek-V2:lite locally noticed the model outputs gibberish when switched to Agent mode, despite working fine in standard chat. In contrast, the Claude API handled Agent mode flawlessly.

This raises a common question: are all AI models suited for agentic workflows? Many lightweight or non-instruct-tuned models struggle and crash when handling complex tool calls, JSON formatting, and logic reasoning. When selecting Agent models on Hugging Face, it's crucial to verify if they have undergone specific training for Function Calling and instruction following.

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