Best AI products · Friday, September 25, 2026

Ranked by votes, comments, and recency4 launches

1. 1
   LLM Attention Visualization

   A visualization of the attention mechanism in LLMs.

   An interactive visualization of the attention mechanism in a small large language model. Hover or tap any generated token to see which earlier tokens influenced it, with opacity scaled by attention weight across all heads and layers. Exampl

   💬 0Y▲ 177 on HNResearch & DataLLMs & InfrastructureFreeby AI Launch Team

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2. 2
   Lossless-memory

   A personal AI memory that never summarizes

   lossless-memory is a long-term memory system for a personal AI assistant that never summarizes. It keeps every raw line, timestamps everything, and searches by time first and words second, returning results in chronological order. A small i

   💬 0Y▲ 67 on HNLLMs & InfrastructureProductivityOpen Sourceby AI Launch Team

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3. 3
   jevals

   Replacing LLM judges with typed Jev decisions

   jevals runs evals and guardrails for AI agents using Jev-style decision models instead of an LLM judge. All the checks for a trace, such as tool choice, groundedness, answer relevancy, prompt injection and PHI, go out as one request that co

   💬 0Y▲ 47 on HNLLMs & InfrastructureAI AgentsOpen Sourceby AI Launch Team

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4. 4
   OpenLake

   Storage engine for KV-cache offload and LLM training

   OpenLake is a high-performance storage engine for LLM inference and GPU training. Its Infinity Core I/O Engine delivered 6.72 GiB/s writes and 11.55 GiB/s reads in the MLPerf Storage v3.0 Llama 3.1 8B checkpointing benchmark through its S3

   💬 0Y▲ 35 on HNLLMs & InfrastructureOpen Sourceby AI Launch Team

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