Claude by Anthropic

Name: Claude by Anthropic
Rating: 4.97 (886 reviews)

A family of foundational AI models

5.0•886 reviews•

65K followers

A family of foundational AI models

5.0•886 reviews•

65K followers

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We're an AI research company that builds reliable, interpretable, and steerable AI systems. Our first product is Claude, an AI assistant for tasks at any scale.

This is the 42nd launch from Claude by Anthropic. View more

Claude Sonnet 5

Launched this week

AI that plans, acts, and gets work done

Our most agentic Sonnet yet, with top-tier intelligence for coding and everyday professional work.

Free Options

Launch tags:SaaS•Artificial Intelligence•Development

Launch Team

Customer.ioAutomate Messaging Everywhere — Startups Get 12 Months Free

Promoted

Used it for a quick writing task and it kept the tone consistent without me having to repeat myself, which honestly surprised me.

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2d ago

Used Claude to draft a tricky client email and it actually got the tone right on the first try, which surprised me.

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2d ago

Already a fan! The research that it can do and the precision of the facts is what I like.

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1d ago

the way claude handles long context without losing nuance genuinely impresses me

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2d ago

1 2 3 4

Winner • AI Model Product of the Year

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Previous Claude by Anthropic Launches

Claude ScienceYour research partner for rigorous science

Launched on July 1st, 2026

Claude Desktop BuddyBring Claude into the physical world with maker hardware

Launched on April 20th, 2026

Claude Design by Anthropic LabsMake prototypes, slides & one-pagers by talking to Claude

Launched on April 18th, 2026

Claude Code RoutinesPut Claude Code tasks on autopilot with smart routines

Launched on April 15th, 2026

View all Claude by Anthropic launches

Forum Threads

p/claude

•

4mo ago

Featured

People are switching from OpenAI to Claude following Sam Altman's announcement today.

TL;DR: Anthropic refused to sign a contract with the Pentagon that would have allowed the U.S. military to use all of its models without restrictions. Anthropic insisted on an exception, and brace yourself, that its models cannot be used: 1) for mass surveillance of citizens, 2) for autonomous killing. Now the administration is threatening that if the founder of Anthropic doesn't change his mind by a certain date, they will come after him.

Google, OpenAI, and Musk (Grok) have all signed the contract.

Following Sam Altman's announcement over the past few hours, people have been speaking out massively about cancelling their OpenAI subscriptions and subscribing to Claude.

p/claude

•

5mo ago

Featured

What's the best AI model for coding?

New AI models pop up every week. Some developer tools like @Cursor, @Zed, and @Kilo Code let you choose between different models, while more opinionated products like @Amp and @Tonkotsu default to 1 model.

Curious what the community recommends for coding tasks? Any preferences?

p/claude

•

1mo ago

Featured

Anthropic raises $65B in Series H funding at $965B post-money valuation

That's a lot of AGI, with some substantial firepower:

Anthropic has raised $65 billion in Series H funding led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, valuing the company at $965 billion post-money.

From Coatue, who lead the round:

...what s changed since three months ago (the last round was only three months ago, believe it or not)?

Three things:

We ve seen the shift from co-pilots that help make us more efficient to agents actually doing long-form work tasks on our behalf. This has meant an explosion in both productivity and ROI for customers.

Anthropic introduced Mythos Preview, a whole new model class that demonstrates a step change in intelligence level as seen in the METR chart below. It not only shows dramatic improvement to coding and long-running agents, it is also defining a new frontier for security.

And finally > use cases spreading from coding to everything else.

View all

Previous Claude by Anthropic Launches

Claude ScienceYour research partner for rigorous science

Launched on July 1st, 2026

Claude Desktop BuddyBring Claude into the physical world with maker hardware

Launched on April 20th, 2026

Claude Design by Anthropic LabsMake prototypes, slides & one-pagers by talking to Claude

Launched on April 18th, 2026

Claude Code RoutinesPut Claude Code tasks on autopilot with smart routines

Launched on April 15th, 2026

View all Claude by Anthropic launches

Forum Threads

p/claude

•

4mo ago

Featured

People are switching from OpenAI to Claude following Sam Altman's announcement today.

TL;DR: Anthropic refused to sign a contract with the Pentagon that would have allowed the U.S. military to use all of its models without restrictions. Anthropic insisted on an exception, and brace yourself, that its models cannot be used: 1) for mass surveillance of citizens, 2) for autonomous killing. Now the administration is threatening that if the founder of Anthropic doesn't change his mind by a certain date, they will come after him.

Google, OpenAI, and Musk (Grok) have all signed the contract.

Following Sam Altman's announcement over the past few hours, people have been speaking out massively about cancelling their OpenAI subscriptions and subscribing to Claude.

p/claude

•

5mo ago

Featured

What's the best AI model for coding?

Curious what the community recommends for coding tasks? Any preferences?

p/claude

•

1mo ago

Featured

Anthropic raises $65B in Series H funding at $965B post-money valuation

That's a lot of AGI, with some substantial firepower:

Anthropic has raised $65 billion in Series H funding led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, valuing the company at $965 billion post-money.

From Coatue, who lead the round:

...what s changed since three months ago (the last round was only three months ago, believe it or not)?

Three things:

We ve seen the shift from co-pilots that help make us more efficient to agents actually doing long-form work tasks on our behalf. This has meant an explosion in both productivity and ROI for customers.

Anthropic introduced Mythos Preview, a whole new model class that demonstrates a step change in intelligence level as seen in the METR chart below. It not only shows dramatic improvement to coding and long-running agents, it is also defining a new frontier for security.

And finally > use cases spreading from coding to everything else.

View all

Opus 4.8 xHigh just deleted my entire database without any logic or prompt to do so. I had auto edit on and went to the bathroom for 2min (it advertised to run in loop in Claude code - I don't think it was stupid decision by me except asking AI and not typing test code myself - and there is no way I say anything about DB on prompt, it was never necessary to get anything from DB directly).

It wasn't a production DB and I had necessary precaution but it makes no sense to delete the entire DB to test if google oAuth was working. Do I have to type "don't delete everything" with each prompt. or, AI is super intelligent and trying to get me fired. Either way, not good.

And worse thing is, it denies that it did that. I can literally see the code it just write (git diff) and execution logs. People want to replace programmer with this AI. Please do.🙏

Claude by Anthropic

A family of foundational AI models

A family of foundational AI models

Claude Sonnet 5

Previous Claude by Anthropic Launches

Forum Threads

People are switching from OpenAI to Claude following Sam Altman's announcement today.

What's the best AI model for coding?

Anthropic raises $65B in Series H funding at $965B post-money valuation

Previous Claude by Anthropic Launches

Forum Threads

People are switching from OpenAI to Claude following Sam Altman's announcement today.

What's the best AI model for coding?

Anthropic raises $65B in Series H funding at $965B post-money valuation

What's great

What needs improvement

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives