Is Probe&Prefill superseded?

Probe&Prefill (Tool use / function calling): superseded — cited as a baseline and beaten by newer methods. 0 paper(s) critique it, 1 beat it on benchmarks — #25 of 55 most-superseded. Sub-problem: cluster led by Probe&Prefill. Newer alternatives in the same sub-problem include Activation Steering Adapter (ASA).

Tool use / function calling

Probe&Prefill

LLM Agents Already Know When to Call Tools -- Even Without Reasoning

Superseded baseline#25 of 55 most-superseded · first seen May 10, 2026

Superseded — cited as a baseline and beaten by newer methods

0 papers critique it · 1 beat it on benchmarks

Beaten on benchmarks

Head-to-head results where a newer method reports beating Probe&Prefill. Values are copied from the source paper's tables — verify against the cited paper.

ASA beats Probe&Prefill
6.72 vs 36.83
Overall Missing Tool Rate · [NESTFUL evaluation]
ASA: Activation Steering for Tool-Calling Domain Adaptation

What to use instead

Recent methods in the same sub-problem, not yet superseded in the knowledge base — arXiv benchmark leaders, not vetted production recommendations.

Activation Steering Adapter (ASA)ASA: Activation Steering for Tool-Calling Domain Adaptation
Feb 4, 2026