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Kidus Zewde

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Preprint Sep 2026

ChatGPT Images 2.5 on Forgery Tasks: Testing Advertised Improvements Against Known Answers

OpenAI released ChatGPT Images 2.5 on 8 September 2026, advertising more precise local edits, better consistency across edits, more faithful reference products and sharper detail. We evaluate these claims on four forgery tasks with answers fixed in advance: receipt-field alteration, repeated editing, product placement...

Ankit Raj, Yu-Xin Zhang, Kidus Zewde et al. · 2 citations
#artificial intelligence Preprint Sep 2026

Agents That Edit Documents: Measuring Agentic PDF Forgery Against a Non-Agentic Control

AI agents that carry a multi-step computer task through on their own became ordinary tools in the past year, and the same autonomy is available to anyone whose task is harmful. We ask what that means for a relying party -- an insurer, a lender, an auditor -- whose evidence is a filed PDF. AgentForge-Bench measures how...

Si-Miao Ren, Ankit Raj, Tommy Duong et al. · 0 citations
#natural language process... Preprint Sep 2026

Open-Jev Judgments on CallScreenBench: Calibrated One-Pass Scam Screening with a Small Language Model

Screening a phone call for fraud needs a trustworthy probability after every caller turn, in milliseconds. Jev-style typed decisions promise exactly that: declared options go in, one calibrated probability per option comes out of a single forward pass, with no generated text. We test an open implementation of this read...

Si-Miao Ren, Kidus Zewde, Xing-Yu Shen et al. · 6 citations · ⚡1
Preprint Aug 2026

CallScreenBench: Benchmarking Small Language Models as Phone Secretaries

This work presents CallScreenBench, which reports five automated call-and-note measure groups motivated by owner endorsement, and reports quality measures and guardedness channels separately so that a single pass/fail score does not hide their trade-offs.

Jia-Qi Gan, Hao Tang, Jamey Z. Liang et al. · 1 citation

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