claude-opus-5-5 · Anthropic
Claude Opus 5.5 is Anthropic’s latest flagship model. In Anthropic’s comprehensive alignment testing, Opus 5.5 is the strongest-performing model tested to date. It also includes the safety safeguards Anthropic has developed for its most capable models.
Claude Opus 5.5 is Anthropic’s latest flagship model. In Anthropic’s comprehensive alignment testing, Opus 5.5 is the strongest-performing model tested to date. It also includes the safety safeguards Anthropic has developed for its most capable models.
Claude Opus 5.5 has a 1,000,000 token context window.
On AIHubMix, Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens. Cached input reads are billed at $0.2 per million tokens.
Claude Opus 5.5 accepts text, image and PDF input.
Claude Opus 5.5 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-5-5 — no other code changes needed.
Claude Opus 5.5 is developed by Anthropic. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Claude Opus 5.5 was released on September 23, 2026 by Anthropic.
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Use Claude Opus 5.5 via the AIHubMix unified API — one interface for every major LLM.