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Top-Tier Reasoning

Claude Opus 4

Claude Opus 4 is Anthropic's most powerful AI model yet, revolutionizing high-stakes workflows with unmatched coding prowess, sustained performance on complex multi-step tasks, and advanced agentic capabilities that enable hours of autonomous reasoning and deep memory retention. Ideal for engineering, research synthesis, and enterprise automation, it leads benchmarks like SWE-bench while powering frontier agents with precision and reliability.

200k Context
Top-Tier Intelligence
Jan '25 Knowledge

Available for Chat, Vision, and File Uploads.

How do you want to interact?

Start a Conversation

Ask anything.
Have a natural conversation, brainstorm ideas, draft emails, or ask for advice.

Start Chatting

Use a Persona

Specialized Experts.
Instruct the AI to act as a Coding Tutor, Marketing Expert, or Travel Guide.

Pick a Persona

Why use Claude Opus 4?

Long-Haul Coding Sprints

Endurance for extended refactors, research tasks, and multi-hour autonomous workflows without degradation

Advanced Reasoning

Expert-level analysis for complex problem-solving, multi-step planning, and structured outputs like agentic workflows

State-of-the-Art Code Understanding

Superior comprehension of complex codebases, multi-file refactors, and leading benchmarks like SWE-bench (72.5%)

Capability Examples

How to use

1
Go to Chat

Navigate to the "AI Chat" page.

2
Select Model

Ensure Claude Opus 4 is selected.

3
Type Prompt

Ask a question or paste code.

4
Interact

Refine the answer by replying to the AI.

Compare LLMs Side-by-Side

Is Claude Opus 4 better than Claude 3.5 or Gemini? Test same prompts simultaneously in the Chat Playground.

Open Chat Playground

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