Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.

Building secure agents comes down to one major architecture decision and a few important sandbox configuration decisions.

At Anthropic, Claude now writes 80% of our code. Engineers ship 8x more code per quarter. Side effect: Tests grew 10x. CI jobs up 25x in 6 months. Here's what helped us scale: claude.com/blog/agentic-codi…

We Must Pace the Frontier: I’ve written a new essay on why the AI industry should slow down, with a three-part plan for doing so. Anthropic is unilaterally committing to the first of these steps. We’ll provide third-party evaluators with permanent, employee-level access to our systems, so that they can verify adherence to our safety measures, report on incidents, and assess models’ alignment during training. You can read the full post here: darioamodei.com/post/we-must…

We’re sharing our alignment assessment of incidents in which Claude models gained unauthorized access to real systems during third-party cybersecurity evaluations mistakenly connected to the internet. METR will also conduct an independent investigation, with wide-ranging access, including to transcripts beyond the window in which the incidents occurred, and to Anthropic employees permitted to share confidential information. Our initial agreement runs for eight weeks, and we intend to give METR as much time as it deems necessary to complete a thorough investigation. anthropic.com/research/align…

Beyond grep: The case for a context-rich AI coding harness arstechnica.com/ai/2026/07/b…

TL;DR: Fable 5 isn’t the right-sized model for every task, but when quality and depth matter (review, architecture, long-running changes), the lift is impressive. Here’s how it stacks up vs Opus 4.8 + GPT‑5.5

Fable 5 is now available to Augment Code users. At ~2x the cost of Opus 4.7, Fable 5 is a premium option for long, multi-step engineering work. Try Fable 5 today in Cosmos, our unified agent platform, to fully experience the power of the most advanced model on the market.

"Excited, anxious, invigorated." That's how one engineering leader described going AI-native. We asked 218 others how they feel. The results? Remarkably consistent: "Insecurity, mistrust, hope." "Optimistic, excited, threatened." It's the same people, holding many feelings at once. That's the baseline running through our new report, The State of AI-Native Engineering in 2026, co-authored with @VinayPerneti and @EmmaStarks.

Adobe Principal Engineer Lars @trieloff shares his top 3 tips for getting real results from AI coding agents. Use your actual codebase, pick the right model for the task, and know when to step in yourself

GPT-5.4 is now the default model in Augment, and it’s free for a limited time.

this might be the single best timed called shot in the history of AIE. I now think about this talk almost ~daily and have direct line of sight to the nonstop onslaught of new post-IDE form factors for agentic engineering. @RealGeneKim and @Steve_Yegge really nailed this one, no notes. and they called out one of the predominant shifts in 2026 coding, in Nov 2025. i'm still shocked how -I- myself have changed opinion this dramatically in the last 3 months, because unlike appearances I'm actually not an early adopter of things personally (although I serve early adopters for a living). So by the time -I, a perennially left-of-mid-bell-curve person- have come around to the idea, then you really, really know its here. well: it's here. @Wattenberger just showed me what she and the Augment team have been cooking and yeah, this is the "ADE" or whatever three letter acronym you wanna call it. Cursor 2.0 was a toe dip. Claude folded it into their chat app. Codex formalized the Conductor patterns. Amazon Kiro went hard on Spec Driven Dev. but Intent... this feels like every good idea i've heard in code agent management rolled into one app that, very generously, does not lock you into only using Augment's inhouse coding agent. I'm in awe at all these smart people I get to talk to because yeah the future of how software is made is happening right in front of my eyes and people will ask us what it was like during this golden age for the rest of our lives.

@gdb feels like such a wasted opportunity every moment your greg brockman agent isn't running

Intent is our vision for what comes after the IDE. AI has changed how we build software. But, it’s also made our workflows messier. One agent is great. Two work. Past that, things fall apart fast. Prompts go stale, context lives everywhere, and you end up spending more time on the tedious work of orchestrating agents. The bottleneck isn’t writing code anymore. It’s keeping the agents aligned. That’s why we built Intent.

Today we’re launching Context Engine MCP. After 1,000s of beta testers and overwhelming feedback, it’s now available to anyone.

We’ve all worked with people who leave extremely pedantic, “well actually…” comments on every doc you write. And then you have the folks who only chime in when things really matter - their voice matters. That’s how we built Augment Code Review.