Anthropic: Claude Opus 4.6

Anthropic: Claude Opus 4.6 is Anthropic’s most powerful model, specifically engineered for intricate coding challenges and extensive professional workflows. It excels as an agent operating across entire processes, not just single prompts, making it ideal for large codebases, complex refactoring, and multi-step debugging that evolves over time. This model demonstrates superior contextual understanding, enhanced problem decomposition, and greater reliability on demanding engineering tasks compared to its predecessors. Beyond its coding prowess, Opus 4.6 is highly effective for sustained knowledge work. It can generate near-production-ready documents, strategic plans, and detailed analyses in a single pass, maintaining coherence across very long outputs and extended sessions. This makes it an excellent choice for tasks requiring persistence, sound judgment, and thorough follow-through, such as technical design, migration planning, and end-to-end project execution. With a 1000K token context window and 128K token max output, it supports extensive interactions. Pricing is $5.00/25.00 per 1M tokens (input/output). Capabilities include json_mode, streaming, functions, long_context, structured, and vision.