Anthropic: Definition and Examples

Anthropic is an American artificial intelligence research company, founded in 2021, specializing in the development of safe and responsible AI systems, notably the Claude model family.

Full definition

Anthropic is an AI research company founded in 2021 by Dario Amodei and Daniela Amodei, former leaders at OpenAI, along with several renowned researchers. The company is based in San Francisco and stands out for its focus on AI safety. Its primary mission is to develop reliable, interpretable, and controllable AI systems.

Anthropic's flagship product is Claude, a conversational AI assistant available in multiple versions (Haiku, Sonnet, Opus). Claude is distinguished by its ability to follow complex instructions, produce nuanced responses, and refuse potentially dangerous requests. Anthropic has also pioneered techniques like Constitutional AI (constitutional RLHF), which aligns the model's behavior with explicitly defined ethical principles.

The company has raised several billion dollars from major investors like Google and Amazon, making it one of the best-funded players in the sector. Anthropic regularly publishes research on model interpretability, robustness, and alignment, significantly contributing to the advancement of knowledge in AI safety.

For practitioners of prompt engineering, understanding Anthropic and its Claude models is essential because each AI provider has its own strengths, limitations, and best practices. Claude models respond particularly well to structured instructions, XML tags, and detailed system prompts, making them powerful tools for professional use cases.

Etymology

The name 'Anthropic' derives from the ancient Greek 'anthropikos' (ἀνθρωπικός), meaning 'relating to the human being'. This choice reflects the company's mission: to develop artificial intelligence centered on humans, serving humanity's interests while minimizing existential risks.

Concrete examples

Choosing the right Anthropic model for a task

You are an assistant using Claude Sonnet. Analyze this legal contract and identify the 5 most risky clauses for the tenant. Present each clause with: the article number, the exact text, and an explanation of the risks in plain language.

Leveraging Claude's Constitutional AI for balanced responses

Present arguments for and against the regulation of artificial intelligence in Europe. Be factual, nuanced, and cite concrete examples like the AI Act. Avoid any bias.

Using XML tags recommended by Anthropic

<context>I am an intermediate Python developer.</context>
<task>Explain the async/await pattern in Python with a concrete API call example.</task>
<format>Commented code followed by a step-by-step explanation.</format>

Practical usage

In prompt engineering, knowing Anthropic's specifics allows you to optimize your prompts for Claude models. Use XML tags to structure your instructions, provide a detailed system prompt to frame behavior, and leverage the extended context window (up to 200K tokens) for tasks requiring large input data.

Related concepts

ClaudeConstitutional AIAI SafetyRLHFAI AlignmentSystem promptLanguage Model (LLM)

FAQ

What is the difference between Anthropic and OpenAI?

Anthropic and OpenAI are both AI research companies, but Anthropic stands out for its explicit focus on AI safety. Founded by former OpenAI members, Anthropic developed the Constitutional AI approach and emphasizes model interpretability. OpenAI produces GPT and ChatGPT, while Anthropic develops the Claude family.

What are the different models offered by Anthropic?

Anthropic offers the Claude model family in several tiers: Claude Haiku (fast and economical, ideal for simple tasks), Claude Sonnet (balance between performance and cost), and Claude Opus (the most powerful, for complex tasks requiring advanced reasoning). Each model is available via API and through the claude.ai interface.

How can I adapt my prompts specifically for Anthropic models?

Claude models respond particularly well to structured instructions with XML tags (<context>, <task>, <format>), detailed system prompts that define the role and constraints, and explicit breakdown of reasoning steps. Anthropic also recommends providing concrete examples (few-shot) and being specific about the expected output format.

How to use this prompt

Copy the prompt with the button above.
Paste it into ChatGPT, Claude or your favorite AI assistant.
Replace the bracketed variables with your details, then refine the result.

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