Claude Code with Anthropic API compatibility
Ollama is now compatible with the Anthropic Messages API, making it possible to use tools like Claude Code with open models.
Claude 171 stories
Finding Bugs with Claude and Property-based Testing
Ensuring that programs are bug-free is one of the most challenging aspects of software engineering. We developed an agent that can efficiently identify bugs in large…
Anthropic launches Cowork, a Claude Desktop agent that works in your files — no coding required
Anthropic released Cowork on Monday, a new AI agent capability that extends the power of its wildly successful Claude Code tool to non-technical users — and…
Demystifying evals for AI agents
The capabilities that make agents useful also make them difficult to evaluate. The strategies that work across deployments combine techniques to match the complexity of the…
Claude Code and What Comes Next
With the right tools, AI can accomplish impressive things
Nous Research's NousCoder-14B is an open-source coding model landing right in the Claude Code moment
Nous Research, the open-source artificial intelligence startup backed by crypto venture firm Paradigm, released a new competitive programming model on Monday that it says matches or…
Claude Opus 4.5 Saves Tokens, White House Boosts AI-Powered Science, Amazon Exposes Nova 2 Pro Checkpoints, Small Models Solve Hard Puzzles
The Batch AI News and Insights: If you have not yet built an agentic workflow, I encourage you to try doing so, using the simple recipe…
Effective harnesses for long-running agents
Agents still face challenges working across many context windows. We looked to human engineers for inspiration in creating a more effective harness for long-running agents.
Opus 4.5 is now available in Windsurf
The most capable model in Windsurf yet, now available at Sonnet prices for a limited time
Introducing advanced tool use on the Claude Developer Platform
We’ve added three new beta features that let Claude discover, learn, and execute tools dynamically. Here’s how they work.
Code execution with MCP: Building more efficient agents
Direct tool calls consume context for each definition and result. Agents scale better by writing code to call tools instead. Here's how it works with MCP.
Beyond permission prompts: making Claude Code more secure and autonomous
Claude Code's new sandboxing features, a bash tool and Claude Code on the web, reduce permission prompts and increase user safety by enabling two boundaries: filesystem…
Equipping agents for the real world with Agent Skills
Claude is powerful, but real work requires procedural knowledge and organizational context. Introducing Agent Skills, a new way to build specialized agents using files and folders.
Today I met with PM @narendramodi to discuss Anthropic's expansion to India—where Claude Code use is up 5× since June. How India deploys AI across c…
Today I met with PM @narendramodi to discuss Anthropic's expansion to India—where Claude Code use is up 5× since June. How India deploys AI across critical…
Effective context engineering for AI agents
Context is a critical but finite resource for AI agents. In this post, we explore strategies for effectively curating and managing the context that powers them.
A postmortem of three recent issues
This is a technical report on three bugs that intermittently degraded responses from Claude. Below we explain what happened, why it took time to fix, and…
Writing effective tools for agents — with agents
Agents are only as effective as the tools we give them. We share how to write high-quality tools and evaluations, and how you can boost performance…
Claude Does Cyber Competitions
Throughout 2025, we have been quietly entering Claude in cybersecurity competitions designed primarily for humans. In many of these competitions Claude did pretty well, often placing…
Cyber Evaluations of Claude 4
We partnered with Pattern Labs on a range of cybersecurity evaluations of Claude Opus 4 and Claude Sonnet 4, with Opus demonstrating especially notable improvement over…
Desktop Extensions: One-click MCP server installation for Claude Desktop
Desktop Extensions make installing MCP servers as easy as clicking a button. We share the technical architecture and tips for creating good extensions.
How we built our multi-agent research system
Our Research feature uses multiple Claude agents to explore complex topics more effectively. We share the engineering challenges and the lessons we learned from building this…
Claude Code: Best practices for agentic coding
Claude Code is a command line tool for agentic coding. This post covers tips and tricks that have proven effective for using Claude Code across various…
The "think" tool: Enabling Claude to stop and think in complex tool use situations
A new tool that improves Claude's complex problem-solving performance
R1+Sonnet set SOTA on aider’s polyglot benchmark
R1+Sonnet has set a new SOTA on the aider polyglot benchmark. At 14X less cost compared to o1.