Claude Opus 5.5
Claude Opus 5.5 is Anthropic's most capable large language model, offering advanced reasoning and analysis.
Claude Opus 5.5 is a very smart computer program made by Anthropic. It can understand and create text, answer questions, and help with complex tasks. Think of it like a highly advanced assistant that can process a lot of information.
For example, you could give Claude Opus 5.5 a long document and ask it to summarize the main points or identify specific information. It's designed to be good at understanding nuance and providing detailed responses.
Claude Opus 5.5 represents Anthropic's flagship large language model, built upon their Constitutional AI principles. It is engineered for high-level reasoning, complex problem-solving, and nuanced understanding across a wide range of tasks. The model aims to provide state-of-the-art performance in areas such as coding, mathematics, and creative writing, while maintaining a focus on safety and helpfulness.
Anthropic is making its advanced AI models, like Claude Opus 5.5, more accessible by cutting costs. This move aims to boost performance and affordability, potentially increasing the adoption of these powerful AI tools in creative industries.
- Scrimshaw JukeboxAnthropic · Simon Willison ·
- Anthropic releases cheaper model in first launch since slowdown callsAnthropic · The Information ·
- Anthropic Claude
- Anthropic is the developer of Claude Opus 5.5, a large language model that is being made more affordable and performant.
- Claude 3 Opus
- This is the predecessor model, which Opus 5.5 likely improves upo
- Other large language models
- Models from OpenAI, Google, and Meta offer similar
Claude Opus 5.5 is a proprietary model developed by Anthropic. Specific technical details are typically released by the company.
Ask Claude Opus 5.5 to explain a complex scientific concept in simple terms. Then, ask it to write a short story incorporating that concept. This will demonstrate its ability to both understand and creatively use information.
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- PromptRole-play a student struggling with math for AI tutor simulationSimulate a student's math struggles and uncertainty for AI tutor evaluation. · 5 min
- TemplateReusable workflow templates for healthcare teamsTeams can create and share templates for common workflows like documentation or prior authorizations. · 15 min
- TemplateTemplate for building an AI tool tailored to your workA structured approach to defining and building a custom AI tool for specific business needs. · 15 min
- TemplateEvals CSV prompt list for agent skillsA CSV file template for listing prompts used in evaluating agent skills. · 20 min
- HeuristicDouble coding agent task completion with docs linksProviding coding agents with a documentation link significantly increases their task completion rate. · 2 min
Questions people ask
- What makes Claude Opus 5.5 different from other Claude models?
- Opus 5.5 is positioned as Anthropic's most advanced and capable model, designed for the most demanding tasks requiring deep reasoning and analysis.
- Is Claude Opus 5.5 available to everyone?
- Access to Claude Opus 5.5 is typically available through Anthropic's platforms and APIs, with different pricing tiers for various users.
First seen on Subvolts Sep 22, 2026. Updated Oct 13, 2026. Written by an AI model from the items above and reviewed against them weekly; report an error.