Claude by Anthropic

Name: Claude by Anthropic
Rating: 4.97 (899 reviews)

A family of foundational AI models

5.0•899 reviews•

67K followers

A family of foundational AI models

5.0•899 reviews•

67K 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.

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Claude by Anthropic Launches

Claude Sonnet 5AI that plans, acts, and gets work done

Launched on July 1st, 2026

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

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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

•

6mo 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

•

2mo 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

Claude by Anthropic Launches

Claude Sonnet 5AI that plans, acts, and gets work done

Launched on July 1st, 2026

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

•

6mo ago

Featured

What's the best AI model for coding?

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

p/claude

•

2mo 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

I'm a solo founder, and Claude is on both sides of my company. I build with Claude Code — it's written a real share of FetchSandbox, from the sandbox engine to the deploy scripts — and Claude runs inside the product: it distills real API failures into runnable bug patterns, writes the docs for 60+ API specs, and powers the loop that reproduces a bug and reasons about the fix.

What stands out after months of daily use is that the reasoning holds up on hard, multi-step problems where other models hand-wave. Opus for the deep work, Haiku for the fast paths. And because it speaks MCP, my users' agents call my tools through Claude directly — no glue code. As a one-person team, it's the closest thing I have to a second engineer.

Claude by Anthropic

A family of foundational AI models

A family of foundational AI models

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

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

vs Alternatives

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives

What's great

What needs improvement

vs Alternatives