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Claude Profile picture
@claudeai
May 28 • 6 tweets • 2 min read • Read on X
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Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors.

Available today at the same price. Benchmark table showing how Claude Opus 4.8 compares to its predecessor and to other models on tests of coding, agentic skills, reasoning, and practical knowledge work tasks.
Fast mode is available for Opus 4.8. It's the same model at roughly 2.5x the speed, and we've made it three times cheaper than before.

Turn it on with /fast in Claude Code. On the API, contact your account manager to request access or join the waitlist: claude.com/fast-mode
In Claude Code, Opus 4.8 makes calls like an experienced engineer without needing constant check-ins.

It stays on track across long-running sessions and follows work through in your repo, so you can hand off a feature or a bug sweep while you focus on what's next.
Also new in Claude Code: dynamic workflows (research preview).

For the hardest tasks, Claude makes a plan, runs hundreds of parallel subagents, and verifies its work before reporting back. Think a migration touching hundreds of files.

Read more: claude.com/blog/introduci…
Claude Opus 4.8 is available today on web, the Claude Platform, and all major cloud platforms.

Read more: anthropic.com/news/claude-op…
Claude Opus 4.8 is available today on the web, the Claude Platform, and all major cloud platforms.

Read more: anthropic.com/news/claude-op…

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More from @claudeai

Claude Profile picture
Jun 17
New in Claude Design: it stays on brand with your design system across projects, lets you edit directly on the canvas, syncs with Claude Code, and connects to more of the tools you already use. Claude Design is now in beta on all paid plans
Import your design system from a repo, design files, or your codebase. Claude builds with your real components and checks its own output against your design system before you see it.
The redesigned editor is steadier for daily work. New layout controls let you drag, resize, and align elements directly on the canvas.
Read 5 tweets
Claude Profile picture
Jun 12
Claude Fable 5 has been out for a couple of days. Some projects people have already built with it:
Read 11 tweets
Claude Profile picture
Jun 9
Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.

Its capabilities exceed those of any model we’ve ever made generally available.
Fable 5 is state-of-the-art on nearly all tested benchmarks, with exceptional performance in software engineering, knowledge work, scientific research, and vision.

The longer and more complex the task, the larger Fable 5’s lead over our other models. Benchmark table titled Mythos 5 & Fable 5, comparing Claude Mythos 5 and Fable 5 against Claude Mythos Preview, Claude Opus 4.8, GPT 5.5, and Gemini 3.1 Pro.
Releasing a model this capable comes with risks. Without safeguards, Fable 5’s capabilities in areas like cybersecurity could be misused to cause serious damage.

Queries on a narrow range of topics will instead receive a response from our next-most-capable model, Opus 4.8.
Read 7 tweets
Claude Profile picture
May 11
New in Claude Code: agent view.

One list of all your sessions, available today as a research preview.
Run claude agents to start dispatching multiple sessions at once. Each one keeps running without taking up a terminal tab.
See what's running, what's waiting on you, and what's done at a glance. Reply inline to unblock, or jump in and out of any session without losing your place.
Read 4 tweets
Claude Profile picture
May 6
We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity.

This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.
Effective today, we are:

1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans;

2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and

3) Substantially raising our API rate limits for Opus models.
Our agreement with @SpaceX means we will use all the compute capacity at their Colossus 1 data center.

This will give us over 300 megawatts of additional capacity to deploy within the month.
Read 4 tweets
Claude Profile picture
Apr 16
Introducing Claude Opus 4.7, our most capable Opus model yet.

It handles long-running tasks with more rigor, follows instructions more precisely, and verifies its own outputs before reporting back.

You can hand off your hardest work with less supervision. Claude Opus 4.7 Benchmarks
Opus 4.7 also has substantially better vision. It can see images at more than three times the resolution and produces higher-quality interfaces, slides, and docs as a result.
On the API, a new xhigh effort level between high and max gives you finer control over reasoning and latency on hard problems. Task budgets (beta) help Claude prioritize work and manage costs across longer runs.
Read 5 tweets

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