Pricing, Performance & Features Comparison
Claude Opus 4.6 is Anthropic's most intelligent and capable model, specifically designed for complex tasks, coding, and building agents. It features improved coding skills, better planning and agentic capabilities, and is the first Opus-class model to support a 1 million token context window (in beta). The model delivers state-of-the-art performance on complex reasoning benchmarks and expert-level tasks while maintaining an industry-leading safety profile.
GPT-5.3-Codex is OpenAI's most capable agentic coding model, combining frontier coding performance with the reasoning and professional knowledge capabilities of GPT-5.2 in a single model that is 25% faster than GPT-5.2-Codex. It is designed to handle long-running tasks involving research, tool use, and complex execution, enabling it to perform nearly any task a professional can do on a computer, from debugging and deployment to creating spreadsheets and presentations.