Markus Ylisiurunen

a terminal-based AI chat client for working with code. tau gives you access to Claude, GPT, and Gemini models, each equipped with tools to explore, read, write, and edit files in your project, plus optional sub-agents for background tasks.

a typescript library for streaming LLM completions across OpenAI, Anthropic, and Google. provides a unified event interface for streaming responses with tool calling, reasoning summaries, and token usage with cost tracking.