Ax Kyle Waters, Lucas Nuzzi, Tadhg Looram, Alessandro Tomasiello, Ariel Ghislain Kemogne Kamdoum, Bikun Li, Damien Sileo, Egor Kretov, Francesco Fournier-Facio, Georgios Soloupis, Haile Kassahun, Hew Wolff, Jiaqi Cai, Lianghui Li, Marc Roth, Mohinder Naiya, Naixu Guo, Qicheng Tang, Richard Wheeler, Samuele Sala, Serguei Popov, Steven Dillmann, Yuqi Li 4/20/2026

COMPOSITE-Stem

COMPOSITE-STEM: 70 expert-written benchmark tasks in physics, biology, chemistry for evaluating AI agent reasoning on scientific discovery.

HN doener 4/19/2026

Swiss AI Initiative

Swiss government funding initiative for foundation model research and open science artifacts. €10M GPU hours available for core ML and applications.

HN rdslw 4/19/2026

Headless Everything for Personal AI

Essay on headless APIs for personal AI agents to interact with services (passports, hotels, banking, shopping). Practical agent applications.

HN simianwords 4/19/2026

The LLM costs are not going up

Analysis arguing LLM operational costs are sustainable and declining, countering common claims about economic viability.

HN utkarsh_apoorva 4/19/2026

The Missing Human Half of AI

AbleCredit case study on building human-centered AI systems for non-technical loan officers in India using WhatsApp/Instagram interfaces.

HN vignesh_146 4/19/2026

Model Council

Debate-style app orchestrating multiple LLMs (GPT, Grok, Claude) with scoring and verification

HN yoeven 4/19/2026

CNNs + VLM outperforms pure VLMs on OCR

Study comparing CNN-based OCR with vision language models, showing hybrid approach combining both architectures outperforms either alone.

HN iappyx 4/19/2026

Generate real Android APKs on-device

iappyxOS: AI-powered on-device Android APK generator without cloud/servers; users describe apps to AI for local building and installation.

HN jithinraj 4/19/2026

Show HN: verifiable API and MCP calls

PEAC: tool for verifiable API and MCP calls using portable signed records, supports Node.js, Go, Python with offline verification.

HN Brajeshwar 4/19/2026

Claude system prompts as a Git timeline

Git timeline visualization of Claude system prompts showing changes between versions; created by converting Anthropic's published prompts into commits.