Frontier results, on device - RL Nabors, Arize
Jun 29, 2026 · 30:52
RL Nabors (Arize) argues that most frontier-model calls can be replaced by smaller, local models, saving cost, latency, and energy. She presents a four-step framework: prototype big with a foundation model, collect a golden dataset, run capability evals using Arize's open-source Phoenix, then select the 'sage' (small and good enough) model. Demonstrating with her social app Mima, she tested Qwen 2.5, Qwen 3, LLaMA 3.2, and Gemma 4 against Claude Sonnet on summary accuracy, latency, and cost. LLaMA 3.2 (3B params) won at 90% accuracy and 1-second P50 latency, versus Gemma 4's 8 seconds. Prompt engineering—specifically few-shot prompting—closed the gap further, achieving 92.9% factual consistency and 100% JSON validity. Nabors emphasizes running regression evals to prevent regressions, and notes that on-device inference eliminates data exposure and round-trip latency.
