Opus 4.1

« An AI model built for code and autonomous agents. It features a context window of one million tokens and enables detailed analysis of documents, charts, and screenshots. It is 40% less expensive than its predecessor (Opus 5) »

« An upgraded version that comes close to the intelligence of the GPT-6 Astra model at about one-fifth the cost. Enjoy better results in programming, writing, and agent-based tasks. You’ll also benefit from a context size exceeding one million tokens »

« Anthropic's LLM model for coding, research, and long, complex tasks. With improved performance and reduced costs on agent-based workloads. It also produces far fewer false security alerts »

« Take advantage of Anthropic’s AI model—more reliable, more honest, and four times less likely to overlook its own errors. Its fast mode delivers up to 2.5 times more tokens per second (at the same API rate as the previous version) »

« Discover a next-generation AI model designed for advanced use while remaining highly secure. You’ll enjoy top-tier performance for coding, analysis, and research, while safeguards block sensitive applications such as cybersecurity and biology »

« A 1 million-token model with remarkable performance in coding, financial research, legal writing, and cybersecurity. It is capable of independently detecting and fixing critical software vulnerabilities. Accessible via API, subscription, or integrated with Google Search »

« A frontier model from Meta built for personal and professional use, featuring an active memory that remembers what matters to you. It can navigate independently between multiple apps to see your tasks through to completion. Includes robust coding capabilities as well »

« A model that is 30% faster and up to 30% less expensive than the Sonnet 5 version, designed for debugging, drafting polished documents, and creating presentations. It also allows you to work on texts, interfaces, and images »