Show HN: Waiting for LLMs Suck – Give your user a game https://ift.tt/q4ZQWPa

Show HN: Waiting for LLMs Suck – Give your user a game Give your user a game while they wait for the LLM to return a result. https://ift.tt/NLSsJiM April 28, 2026 at 08:15AM

Show HN: AgentSwift – Open-source iOS builder agent https://ift.tt/3p8KUJZ

Show HN: AgentSwift – Open-source iOS builder agent I'm working on a coding agent for building iOS apps. It's built on openspec and xcodebuildmcp. It's free and open source. https://ift.tt/c4AZJwC April 28, 2026 at 06:44AM

Show HN: 49Agents – Infinite canvas IDE for AI agents https://ift.tt/qiSkABL

Show HN: 49Agents – Infinite canvas IDE for AI agents https://ift.tt/wtramHB April 28, 2026 at 06:06AM

Show HN: Free textbook on engineering thermodynamics https://ift.tt/GepMr5d

Show HN: Free textbook on engineering thermodynamics Author here. Feel free to send questions of any kind. https://ift.tt/OgPEDUS April 26, 2026 at 08:47PM

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Show HN: WaveletLM – wavelet-based, attention-free model with O(n log n) scaling https://ift.tt/RUaQcF4

Show HN: WaveletLM – wavelet-based, attention-free model with O(n log n) scaling WaveletLM is a wavelet-based, attention-free architecture that replaces self-attention with learned lifting wavelet decomposition, a Fast Walsh-Hadamard Transform, per-scale gated spectral mixing with SwiGLU activation, an inverse FWHT, and wavelet reconstruction. Combined with expanded MLPs and sparse product-key memory, this yields a model with O(n log n) scaling in sequence length. With 23.8 PPL on WikiText-103, WaveletLM beats both GPT-2 Medium, which was trained on 80× more data, and Transformer-XL Standard, which uses recurrence to extend its effective context. It is undertrained and underregularized due to budget constraints, so there is much room for development and improvement. I invite anyone who is curious to examine the model, test it out, and extend its capabilities further. All code and weights are fully open source, and a PG-19 run will be completed in 2-3 days. Generations can be done in 4-5 GB VRAM at 28.8 tokens/second, and the model is trainable in 16.25 hours with 20 GB of VRAM, both on a 5090. README for comparison tables, instructions, logs, and future plans: https://ift.tt/botKCzg Weights: https://ift.tt/KN83DyS Generations: https://ift.tt/iYLPZA2... The following samples were chosen for coherence, not factual accuracy. Factuality will require scaling and downstream techniques such as RAG and instruction tuning. > The history of the city is reflected in its architecture, which includes the historic Old Town and New Castle County Courthouse Square Historic District. The building was designed by John H. Stevens, who also designed the Albany-Fulton Celebration in 1906 and built a steel-hulled shipyard on the lake shore. > The album was released on August 25, 2007 by Sony Music Entertainment and features several songs from the record including "Never Say Die", "The Show", "Don't Cry for Me Argentina" and a cover of "I Can Only Imagine (But You Are Not Alone)". > The species was first described by Swedish zoologist Carl Linnaeus in 1758 as Agaricus adustus. The genus name is derived from the Latin words perma "to tie", and pous ("like") means "with a large head". In 1821, French mycologists Jean-Baptiste de Lacaille placed it in section Cricetae of the order Carnivora. He later renamed it Spongiforma punctata after the Greek kribensis. https://ift.tt/botKCzg April 26, 2026 at 11:18PM

Show HN: SVG Fitter – Rust+WASM Vectorizer https://ift.tt/GpO8qIy

Show HN: SVG Fitter – Rust+WASM Vectorizer I went crazy with a tool that helps me tracing raster images. Thought other might like it. It doesn't auto vectorize image, but rather allow for guided process. Final SVG still should be edited. Few fun features like genetic algorithm fit optimization, semi-manual tracing and color preservation. Perfect if you want to have lightweight SVG from huge PNG image. Note: If there's interest I might open-source it, just not sure if anyone would want to see it :) https://svg.axk.sh April 25, 2026 at 10:21PM