Author

Elias Lumer

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Review Jul 2026

Do You Need a Frontier Model as a Citation Verifier? Benchmarking Rubric LLMs for Deep-Research Source Attribution

Calibrating the judge is a prerequisite for using citation rubrics as reward signals, and the results show that this calibration does not require the most expensive available model.

E. Leung, Elias Lumer, Corey Feld et al. · arXiv.org · 0 citations

Preprint Aug 2026

The Bitter Lesson of Tool Calling

This work empirically compare programmatic tool calling to native JSON tool calling across 14 language models on BFCL v4 and demonstrates that programmatic tool calling is a viable and robust alternative to JSON tool calling, with performance tracking model capability across release generations.

Ishan Patel, Sahil Sen, Elias Lumer et al. · 1 citation