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12 months to the singularityMatthew Berman7 Nov 2026
Described as the inflection point in Anthropic's internal capability index (AECI) in late 2025, when models became very good at writing code and building whole features.
Anthropic's Claude Opus 4.5 model for agentic coding, tool use and knowledge work, available via app and API.
Updated EU status checked Last shown
Claude Opus 4.5 at a glance
- What is Claude Opus 4.5?
- Claude Opus 4.5 is a model from Anthropic. Anthropic's Claude Opus 4.5 model for agentic coding, tool use and knowledge work, available via app and API.
- Who makes Claude Opus 4.5?
- Claude Opus 4.5 is made by Anthropic.
- Does Claude Opus 4.5 work in the EU?
- Available in the EU. Claude and the Anthropic API are offered across EU/EEA countries, and Claude models are also served through Amazon Bedrock and Google Vertex AI with EU regions. The provided pages contained no explicit EU statement, so this rests on prior knowledge. Last verified 14 Nov 2026.
- How much does Claude Opus 4.5 cost?
- API pricing. API billed per token (launch pricing was $5 per million input tokens and $25 per million output tokens, from prior knowledge, not the provided pages). Also available in paid Claude subscription plans. Licence: Proprietary.
- Where was Claude Opus 4.5 shown?
- In 4 creator videos by Matthew Berman. Most recently by Matthew Berman on 7 Nov 2026, at 3:35 in “12 months to the singularity”.
Sources: the vendor's own pages (linked above) and creator videos at the linked timestamps. EU status is information, not legal advice; see how we check.
About
Claude Opus 4.5 is a proprietary large language model from Anthropic, released in November 2025. It is positioned for software engineering, agentic workflows, computer use and long-running professional tasks. Creators covering it described it as a turning point in late 2025, when models could build whole features or clone software with little supervision.
It accepts text and image input and produces text, including code. It is available in Claude's consumer and team apps, Claude Code, the Anthropic API, and through cloud platforms such as Amazon Bedrock and Google Vertex AI.
Note on naming: Anthropic's homepage now lists newer models, including Claude Opus 5.5, Sonnet 5.5, Fable 5.2 and Mythos 5.2. Opus 4.5 is an earlier generation, and the "Opus 5.5" alias in some listings refers to a separate, later model. The provided pages contain no specification or pricing for Opus 4.5 itself, so pricing details come from prior knowledge and should be checked.
Key features
- Strong agentic coding and multi-step tool use
- Text and image input, text and code output
- Available in Claude apps, Claude Code and the API
- Also offered via Amazon Bedrock and Google Vertex AI
- Proprietary model; weights not released
4 moments
As seen on YouTube
Watch the moment: the exact second top creators show it. Videos load only when you press play, via youtube-nocookie.com.
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They did it...Matthew Berman3 Nov 2026
Creator calls it the peak/turning point where he could tell a model to build or clone a piece of software and it would do so autonomously.
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We need to talk about this...Matthew Berman10 Sept 2026
Creator says Opus 4.5 changed things overnight at the end of 2025, moving models from autocomplete to writing entire applications autonomously. On the METR chart it works nearly 5 hours autonomously.
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It’s starting…Matthew Berman5 Jun 2026
Cited, together with GPT-5, as a step change in coding ability in Q4 that drove a jump in lines of code per engineer.
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