Measuring Time Horizon using Claude Code and Codex
Most of METR’s time horizon measurements are done using two scaffolds: Triframe and ReAct1. People sometimes see that we use these two scaffolds and feel skeptical…
Claude Opus 4.6 Thinks Smarter, xAI Joins SpaceX, AI Outperforms Doctors, Standardized AI Audits
The Batch AI News and Insights: I recently spoke at the Sundance Film Festival on a panel about AI.
Use the Pinecone Plugin for Claude Code to develop AI Applications Faster
Use the Pinecone Plugin for Claude Code to develop AI Applications Faster
Opus 4.6 (fast mode) is now available in Windsurf
Claude Opus 4.6 (fast mode) is now available in Windsurf with limited-time promotional pricing for self serve users: 10x credits without thinking and 12x credits with…
Opus 4.6 is now available in Windsurf
Claude Opus 4.6 is now available in Windsurf with limited-time promotional pricing for self serve users: 2x credits without thinking and 3x credits with thinking. Available…
Claude Opus 4.6
AnnouncementsIntroducing Claude Opus 4.6Feb 5, 2026We`re upgrading our smartest model.The new Claude Opus 4.6 improves on its predecessor`s coding skills. It plans more carefully, sustains agentic…
Quantifying infrastructure noise in agentic coding evals
Infrastructure configuration can swing agentic coding benchmarks by several percentage points—sometimes more than the leaderboard gap between top models.nn
Building a C compiler with a team of parallel Claudes
We tasked Opus 4.6 using agent teams to build a C Compiler, and then (mostly) walked away. Here's what it taught us about the future of…
Claude is a space to think | Anthropic
AnnouncementsClaude is a space to thinkFeb 4, 2026There are many good places for advertising. A conversation with Claude is not one of them.Advertising drives competition, helps…
Designing AI-resistant technical evaluations
What we learned from three iterations of a performance engineering take-home that Claude keeps beating.
Claude Code costs up to $200 a month. Goose does the same thing for free.
The artificial intelligence coding revolution comes with a catch: it's expensive.Claude Code, Anthropic's terminal-based AI agent that can write, debug, and deploy code autonomously, has captured…
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.
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.