1M Context for Sonnet 4
https://www.anthropic.com/news/1m-context
The most popular model for code generation, Claude Sonnet 4, now supports up to 1 million tokens of context, a 5x increase that will help Claude Code understand larger codebases. Also, for requests over 200k tokens, input and output prices increase.
Talks from Code w/ Claude
https://www.youtube.com/watch?v=gv0WHhKelSE
Cal Reub from Anthropic explains how to best work with Claude Code. He is one of the main developers of Claude Code, involved in prompting, system prompts, tool descriptions, and their evaluation.
Unlike other approaches, Claude Code does not index or embed the entire codebase. Instead, it explores and understands it like a human, using "agentic search" (tools like glob
, grep
, find
). It can iteratively refine its search queries.
Best practices: claude.md
placed in the working directory or home directory for important context; when needed, use /clear
or /compact
to summarize the working chat context; configure automatic confirmation for safe commands and use Shift+Tab
for automatic action acceptance; discuss the plan of action with the agent before execution and confirm it; use screenshots.
Clarification from Q&A: You cannot have multiple claude.md
files in one directory, but you can refer to other files using @
-syntax.
Advanced techniques: Run 2-4 instances of Claude Code simultaneously for parallel work; quickly stop the agent for incorrect actions via escape
, double-tapping allows you to return to the conversation and correct instrutions; headless use, for example, in GitHub Actions.
Clarification from Q&A: Currently, the best way to share context between multiple agents is by writing information into a shared Markdown file.
Orta Therox on using Claude Code
https://blog.puzzmo.com/posts/2025/07/30/six-weeks-of-claude-code/
Compares it to the moment photography arrived and replaced manual drawing. Claude Code allows experimenting with ideas that would previously have been too time-consuming. It has drastically simplified the process of prototyping games.
Lists numerous large, labor-intensive tasks that he performed independently in 6 weeks - now they can be done as background "side projects".
Tips for success: monorepositories so the agent knows the entire project code; using mainstream, mature, well-documented technologies and frameworks; standard CRUD applications; not very large or old codebases.
Advises not to worry about choosing different models (Sonnet, Opus, Gemini CLI, etc.). He successfully uses Claude Code with a standard settings. If the agent "gets stuck," it likely means the user has poorly formulated the task, not a problem with the tool.
The post sparked lively discussion on https://news.ycombinator.com/item?id=44746621 - recently, many developers have expressed surprise and admiration for Claude Code's capabilities, calling it a "game-changer" and a "gift from heaven." The tool removes the burden of remembering details, routine work, and the fear of a blank page.
Comparison. Some consider Amp better than Claude Code. Gemini CLI is generally rated as significantly worse. Cursor has mixed reviews. GitHub Copilot is primarily used for autocomplete, and its agentic part is considered less useful.
Tips. The agent works great with the terminal, so it can be used to perform Git operations, Docker commands, run linters, compilers, testing, and other CLI tools. Encourage the agent to write tests (TDD) and use them to validate changes. It's possible to configure specialized sub-agents to check code for standard compliance, excessive engineering, etc. Even possible to use Claude Code SDK for integration into CI/CD or other automated processes.
People express serious concerns about the use of such tools by "juniors" who might generate slow, unsafe, or simply terrible code without understanding it. Companies might replace them with "seniors" using AI tools, potentially creating a "gap" in the training of future generations of developers. Some believe this could lead to mass unemployment in countries with cheaper labor.
Concerns are also raised about the high cost of Claude Max subscriptions and their inaccessibility to a significant portion of the global developer community.
#claudecode