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Opus 5.5 is a frontier AI model made by Anthropic that is known for top-level coding ability and complex reasoning tasks.
1 story, first covered on Oct 13, 2026.
Opus 5.5 is an advanced artificial intelligence model developed by Anthropic. It is designed to handle complex tasks such as writing code, reasoning through difficult problems, and working with agents that can carry out multi-step workflows. It is part of Anthropic's Claude family of models, where "Claude Opus" refers to the company's most capable line of systems.
Opus 5.5 is considered one of the strongest AI models available when it comes to coding. Its reputation for high performance in software development has made it a benchmark that other companies aim to match or beat. For example, an internal, unreleased version of Google's Gemini 4 Carbon was reported to match Opus 5.5 on coding tasks, even though that Google model had not yet been launched to the public. That kind of comparison highlights how closely the industry watches Opus 5.5's capabilities.
Beyond coding, Opus 5.5 has also been used in scientific research. Agents built on the model were credited with discovering two candidate materials for room-temperature magnetic semiconductors, a kind of finding that could have major implications for electronics and energy. Room-temperature magnetic semiconductors are materials that could let computers and devices work faster and use less power, if they can be made and used in real products.
Opus 5.5 is widely discussed in the AI community and remains a leading reference point for model performance. Competitors continue to test their own systems against it, and its price, intelligence profile, and overall performance have been analyzed in detail by independent observers. As new models are released, Opus 5.5 is used as a standard to measure progress in the field.
Opus 5.5 is made by Anthropic, an AI company that builds the Claude series of language models. It sits at the top end of their lineup and is designed for complex, demanding tasks.
Opus 5.5 is especially strong at coding and reasoning through hard problems. It is also capable of working with AI agents, which are systems that can carry out sequences of actions on behalf of a user.
Yes. AI agents running on Opus 5.5 identified two candidate materials for room-temperature magnetic semiconductors, which could one day lead to faster and more energy-efficient electronics.
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