Claude

Anthropic's frontier model family featuring Opus, Sonnet, and Haiku

FreemiumCoding Writing Research Foundation Models

Free tier, Pro $20/mo, Team $25/mo, Enterprise custom

Overview

Claude is Anthropic's frontier AI assistant, designed with a focus on safety, helpfulness, and honest reasoning. It excels at long-context tasks, nuanced writing, complex analysis, and coding — and is one of the few models that can maintain coherence over very long conversations.

Key Features

200K token context window for processing entire codebases or long documents
Exceptional writing quality with a natural, non-robotic tone
Strong performance on coding, math, and multi-step reasoning
Computer use capability for automating browser and desktop tasks
Projects for persistent memory and file context across sessions
Claude.ai web and mobile apps, plus a powerful API

Pricing: Free tier available; Claude Pro at $20/month; API pricing varies by model.

Pros

Excellent at following complex instructions
Strong reasoning and extended thinking capabilities
200K token context window for large documents
Careful and safety-conscious responses

Cons

Rate limited on free tier
No native image generation
Smaller plugin ecosystem than ChatGPT

Product Updates

Anthropic@AnthropicAI

We’re donating Petri, our open-source alignment tool, to @meridianlabs_ai, so its development can continue independently. Working with Meridian Labs, we’ve also released a major update that improves the adaptability, realism, and depth of Petri’s tests.

1.5KMay 7, 2026View on X ↗

Anthropic@AnthropicAI

Our security bug bounty program is now public on HackerOne. We've run the program privately within the security research community, and their findings have strengthened our products. Now anyone can report vulnerabilities and get rewarded. Read more:

4.4KMay 7, 2026View on X ↗

Anthropic@AnthropicAI

Research we co-authored on subliminal learning—how LLMs can pass on traits like preferences or misalignment through hidden signals in data—was published today in @Nature. Read the paper:

2.7KApr 15, 2026View on X ↗

Anthropic@AnthropicAI

Our Long-Term Benefit Trust has appointed Vas Narasimhan to Anthropic's Board of Directors. Vas brings more than two decades of experience in medicine and global health, including as CEO of Novartis. Read more:

1.7KApr 14, 2026View on X ↗

Anthropic@AnthropicAI

New on the Engineering Blog: Building Managed Agents—our hosted service for long-running agents—meant solving an old problem in computing: how to design a system for “programs as yet unthought of.” Read more:

3.6KApr 8, 2026View on X ↗