A guide explains how to build a tiny large language model from scratch, covering tokenization, pretraining, supervised fine-tuning, and alignment. It aims to demystify the LLM pipeline for developers …
Tokens are the fundamental unit of text processing in large language models (LLMs), determining API costs, response speed, and context window limits. Different providers like OpenAI, Anthropic, and Go…
LectuLibre built an AI-powered platform that translates entire books using large language models, overcoming token limits by implementing a sliding window chunking algorithm based on paragraphs with o…
SoloEngine v0.3.0 introduces a checkpoint mechanism with three streaming checkpoints and a MessageQueue class for async message handling. The release also upgrades ModelManager to AutoComplete, refact…
A developer discovered that using OpenAI's tiktoken tokenizer to count tokens for Claude models leads to a 15-20% undercount, causing inaccurate cost estimates and context budgets. The correct approac…
A developer explains that RAG pipeline chunking strategies determine retrieval quality more than the embedding model or vector store, with most recall failures tracing back to how documents were split…
Andrej Karpathy released a 200-line pure-Python implementation of GPT on February 12, 2026, designed to help developers understand large language models from first principles. The microgpt project inc…
Developer dmatth1 released quicktok, a fast exact BPE tokenizer written in C++ that runs 2–3.5× faster than bpe-openai and 4–11× faster than tiktoken on CPU. The tokenizer is byte-identical to tiktoke…
A tutorial demonstrates streaming, filtering, deduplication, tokenization, and analytics on the FineWeb dataset using Python, reproducing quality-filtering pipelines and MinHash-based near-duplicate d…
A developer explains that large language models never read text directly; instead, they process tokenized integers via Byte Pair Encoding. The post details how tokens—chunks of text like 'Hello' or ' …
A developer has created a 60-second audit script to measure the "MCP server token tax"—the context budget consumed by tool definitions before an agent performs any useful work. Running the script agai…
OpenAI has released tiktoken, an open-source BPE tokenizer library that powers its GPT model family including GPT-3.5, GPT-4, and GPT-4o. The Rust-based tokenizer converts text strings into token ID s…
A developer reverse-engineered their own Claude Code logs to reveal that 64% of the $3,371 monthly bill at Opus 4.7 list rates goes to re-reading the same context every turn, not generating new conten…
A developer has outlined a method for building token-efficient web scraping pipelines for AI agents using n8n, which strips heavy HTML DOM structures into clean, semantic Markdown before inference. By…