Free LLMs show unreliable tool use, decay quickly

A weekly test of free LLMs for tool-use reliability revealed significant decay in model performance over time. Two models, Qwen3-next-80b and Qwen3-coder, consistently failed to produce valid tool calls, while another, Trinity, degraded after weeks of strong performance. The author emphasizes that chat benchmarks do not reflect tool-use reliability and advocates for frequent re-testing to prevent silent failures in production agents. AI

IMPACT Highlights the unreliability of free LLMs for critical agent functions, suggesting frequent re-testing is necessary for production stability.

RANK_REASON The article is an opinion piece and analysis of LLM performance based on personal testing, not a release or benchmark.

Read on dev.to — LLM tag →

• Gemma 4 31B
• Nemotron
• Owl-alpha
• Qwen3-coder
• Qwen3-next-80b
• Trinity

• product
• other

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