by Anthropic
Claude Opus 4.5 is Anthropic’s latest frontier reasoning model, optimized for complex engineering, agentic workflows, and long-horizon computer use. It features strong multimodal capabilities, improved resistance to prompt injection, and a new Verbosity parameter to control token efficiency. With advanced tool use, extended context, and multi-agent support, Opus 4.5 excels in autonomous research, debugging, planning, and spreadsheet/browser operations. ⚠️ The minimum cache token for claude-opus-4-5 has been increased from 1,024 to 4,096 tokens.
Claude Opus 4.5 is Anthropic’s latest frontier reasoning model, optimized for complex engineering, agentic workflows, and long-horizon computer use. It features strong multimodal capabilities, improved resistance to prompt injection, and a new Verbosity parameter to control token efficiency. With advanced tool use, extended context, and multi-agent support, Opus 4.5 excels in autonomous research, debugging, planning, and spreadsheet/browser operations. ⚠️ The minimum cache token for claude-opus-4-5 has been increased from 1,024 to 4,096 tokens.
claude-opus-4-5 has a 200,000 token context window.
On AIHubMix, claude-opus-4-5 costs $5 per million input tokens and $25 per million output tokens. Cached input reads are billed at $0.5 per million tokens.
claude-opus-4-5 accepts text and image input.
claude-opus-4-5 supports thinking, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
claude-opus-4-5 is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to claude-opus-4-5 — no other code changes needed.
claude-opus-4-5 is developed by Anthropic. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
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Use claude-opus-4-5 via the AIHubMix unified API — one interface for every major LLM.