Models by Anthropic

Anthropic is the AI research company behind the Claude family of large language models. These models are designed with a strong emphasis on safety, alignment, and instruction-following, using a novel approach called Constitutional AI.

Key Models

• Claude 1 & 2: Early versions focused on reliability, harmlessness, and context retention.
• Claude 3 (Haiku, Sonnet, Opus): Released in 2024, offering varying levels of performance, speed, and cost.
  • Haiku: Fastest and cheapest
  • Sonnet: Balanced
  • Opus: Most powerful, high-end model for advanced use cases

Notable Features

• Constitutional AI: Claude is trained using guiding principles (“a constitution”) rather than human reinforcement alone. This improves safety and consistency.
• Large Context Windows: Claude models support very long inputs (100k+ tokens), making them ideal for document-heavy or context-rich tasks.
• Instruction Following: Known for exceptionally clear and consistent adherence to structured prompts.

Use Cases

• Enterprise AI assistants
• Legal, medical, or compliance-sensitive tasks
• RAG pipelines with long documents
• Education and tutoring systems
• Internal knowledge tools and Q&A systems

Strengths

• Safer by default—less prone to hallucinations or unsafe outputs
• Excellent at summarizing, reasoning, and document analysis
• Competitive performance with OpenAI and Google models
• Available via API and UI through Anthropic’s platform and Amazon Bedrock

Related Notes

• Prompt Engineering
• LLM Alignment
• Instruction Following
• Context Window
• Models by OpenAI
• Models by Google