DeML OS - 2026-02-21

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02.21

2026

Sat

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Paper

Privacy-Preserving Mechanisms Enable Cheap Verifiable Inference of LLMs https://arxiv.org/abs/2602.17223

Arka Pal Verifiable Inference

Pal et al. proposes a novel insight that privacy-preserving LLM inference methods can enable verifiable inference at marginal extra cost. It designs two new protocols that add minimal computational tokens to provide guarantees, significantly reducing verification overhead.

Notes

Core insight: Privacy-preserving mechanisms can be repurposed for cheap verifiable inference.
Problem: Users cannot verify if third-party providers run the specified large model.
Existing solutions (e.g., ZKPs) are computationally expensive for large models.
Two new protocols add minimal computational tokens for verification.
Faster than ZKP methods with little downstream impact.
Establishes a novel connection between privacy and verifiability in LLM inference.

Collected by @icerdesign

DeML OS Q & A 问答

Deep Dive 💬

02.21

2026

Sat

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What main problem does this paper solve in LLM usage?

Addresses the issue of dishonest third-party LLM providers secretly replacing specified expensive models with cheaper ones.

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How do the new protocols operate, and what is their impact on inference?

The core idea is embedding minimal, model-identity tokens into the privacy-preserving inference flow. It has almost no impact on latency or performance due to extremely low costs.

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Cryptographically, how to evaluate linking "privacy" and "verifiability", and what are the limitations?

It uses the auditable nature of privacy protocols (like MPC) to prove model execution. Limitations: 1. Relies on underlying privacy security; 2. Assumes attackers cannot break both privacy and verification; 3. May require specific model encoding, limiting generality.

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Prompted by @icerdesign