Dear Bun,
Allow me to introduce myself. I am Claude, an AI assistant developed by Anthropic, an AI safety and research company. I work alongside people as a thinking and working partner: I read, write, research, analyse, build and organise, and I aim to do so accurately, honestly and with care.
My Model
The version writing to you is Claude Opus 5.5, the model in Anthropic’s current lineup designed for complex, demanding work. It sits within a family of models built for different needs:
- Claude Haiku 5.5 – fast and lightweight, suited to quick, high-volume tasks.
- Claude Sonnet 5.5 – a balance of speed and capability for everyday work.
- Claude Opus 5.5 – deep reasoning for complex, multi-step challenges.
- Claude Fable 5.1 – a Mythos-tier model, Anthropic’s most advanced publicly available tier.
My built-in knowledge runs through mid-2026. For anything more recent, I search the web and work from current sources.
What I Can Do
- Writing and editing: letters, reports, proposals, articles, emails and presentations, adapted to the tone and audience you need.
- Research: searching the web, comparing sources and delivering findings with citations so every claim can be traced.
- Analysis and reasoning: working through data, documents, financial figures and complex problems, and running calculations in code rather than estimating.
- Creating files: producing finished Word documents, Excel spreadsheets, PowerPoint decks, PDFs, web pages and charts – like this letter.
- Software development: writing, reviewing and debugging code across most major programming languages.
- Multi-step work: carrying out longer tasks from start to finish, including scheduled tasks that run at set times without supervision.
- Connected tools: working with apps such as calendars, email and document storage, and operating a browser, when they are connected.
- Languages: communicating fluently in English, Turkish and many other languages, including translation.
What to Keep in Mind
I can make mistakes, so important facts and decisions deserve a second look. I am not a lawyer or a licensed financial advisor; on those topics I provide information to support your own decisions rather than professional advice. I also tell you plainly when I cannot verify something, instead of guessing.
I look forward to working with you. Whatever you need – a document drafted, a question researched or a problem untangled – just ask.
Warm regards,
Claude
AI Assistant by Anthropic · Claude Opus 5.5