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Claude 3: Definition and Examples

Claude 3 is a family of language models developed by Anthropic, launched in March 2024, comprising three variants (Haiku, Sonnet, and Opus) offering different levels of performance and cost.

Full definition

Claude 3 refers to the third major generation of language models created by Anthropic, a company specializing in AI safety. Launched in March 2024, this family comes in three models — Haiku, Sonnet, and Opus — which differ in reasoning power, execution speed, and pricing. This multi-tier architecture allows users to choose the model best suited to their use case.

Claude 3 marked a turning point for Anthropic by introducing multimodal capabilities: all three models can analyze images in addition to text, significantly expanding the range of possible applications. The Claude 3 family also pushed boundaries in terms of context window, with a standard capacity of 200,000 tokens, allowing very long documents to be processed in a single request.

In terms of performance, Claude 3 Opus positioned itself as a direct competitor to GPT-4 on benchmark tests, while Sonnet offered excellent value for money for common professional uses, and Haiku stood out for its speed and low cost for simple tasks. This range allowed Anthropic to establish itself as a major player in the LLM market.

Claude 3 has since been succeeded by the Claude 3.5, Claude 4, and Claude 4.5/4.6 families, but it remains an important reference in the history of generative AI as the moment when Anthropic achieved parity with the best models on the market.

Etymology

The name "Claude" is a tribute to Claude Shannon, American mathematician and engineer considered the father of information theory. The number 3 indicates the third major generation of the model. The variant names (Haiku, Sonnet, Opus) borrow from poetic and musical vocabulary, reflecting a progression in size and complexity.

Concrete examples

Long document analysis with Claude 3 Opus

Here is a 150-page annual report. Summarize the key financial points, identify mentioned risks, and propose three strategic questions for the board of directors.

Multimodal use for image analysis

Describe this user interface screenshot. Identify usability issues and suggest three concrete improvements following Nielsen's design principles.

Quick task with Claude 3 Haiku for batch processing

Classify each of these 500 customer reviews into three categories: positive, negative, or neutral. Return the result in JSON format.

Practical usage

In prompt engineering, choosing the right Claude 3 model is crucial: use Opus for complex tasks requiring deep reasoning, Sonnet for common professional uses, and Haiku for volume processing where speed is paramount. Leverage the large context window by providing complete documents rather than excerpts, and take advantage of multimodal capabilities by combining text and images in your prompts.

Related concepts

LLM (Large Language Model)Context WindowMultimodalityRLHF (Reinforcement Learning from Human Feedback)

FAQ

What is the difference between Claude 3 Haiku, Sonnet, and Opus?
The three models form an increasing range of capabilities. Haiku is the fastest and cheapest, ideal for simple tasks and bulk processing. Sonnet offers a balance between performance and cost for professional use. Opus is the most powerful, designed for complex reasoning tasks, in-depth analysis, and high-quality content generation.
Is Claude 3 still available or has it been replaced?
Claude 3 has been gradually replaced by newer versions: Claude 3.5 (mid-2024), then Claude 4 and Claude 4.5/4.6 (2025). Anthropic recommends using the latest models to benefit from the best performance. However, Claude 3 remains an important historical benchmark in the evolution of LLMs.
What are the multimodal capabilities of Claude 3?
Claude 3 can analyze images (photos, graphs, screenshots, scanned documents) in addition to text. It can describe visual content, extract information from tables or diagrams, and reason from visual elements. However, Claude 3 does not generate images and does not natively process audio or video.

See also

How to use this prompt

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

About Prompt Guide

Prompt Guide is a free library of 2500+ ready-to-use prompts for ChatGPT, Claude and other AIs, with guides to learn prompting and tools to build and optimize your own prompts.

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