Claude Opus 5

Claude Opus 5 is Anthropic's current Opus model for complex agentic coding and enterprise work. The official API model ID is claude-opus-5. Anthropic documents a 1M-token context window, 128K maximum synchronous output, text-and-image input, adaptive thinking, and standard API pricing of $5 per million input tokens and $25 per million output tokens.

Official sources: Anthropic launch announcement, Claude models overview, and Claude API pricing.

Claude Opus 5 is Anthropic’s current Opus model for complex agentic coding, enterprise work, and long-running professional tasks. Anthropic describes it as a model for serious coding and says it approaches the frontier intelligence of Claude Fable 5 at the same base price as Opus 4.8.

• 1M-token context window for large repositories, long documents, and extended agent sessions
• 128K maximum synchronous output for detailed implementations and reports
• Text and image input with text output across Claude API and supported cloud platforms
• Adaptive thinking with effort controls for trading depth, latency, and token use
• Tool-oriented coding for planning, implementation, verification, and iterative debugging
• Vision and document analysis for diagrams, screenshots, PDFs, and interface review

Anthropic’s current model overview lists the API model ID as claude-opus-5, with $5 per million input tokens and $25 per million output tokens. Prompt caching, batch processing, and fast-mode pricing can change the effective cost, so review the current provider pricing before budgeting a production workload.

Claude Opus 5 is a strong candidate for repository-scale changes, difficult debugging, multi-step agents, enterprise knowledge work, and tasks where the model needs to verify its work instead of stopping after a plausible first answer. It can be more capability than you need for short edits or high-volume routine classification.