
Claude Code Models and Effort Levels: Explained Simply
Model selection and effort level solve different problems. The model controls Claude’s underlying capability; the effort level controls how much work Claude does before responding.
I design production-grade AI systems and scalable SaaS architectures.
Lead Backend & AI Systems Engineer Building scalable SaaS platforms, AI infrastructure, and distributed systems. 7+ years of experience building multi-tenant SaaS platforms, real-time AI systems, and high-performance backend infrastructure serving thousands of organizations.

I’m a Lead Software Engineer based in Milan, focused on scalable SaaS platforms, AI systems, and distributed architectures. Over the last 7+ years, I’ve worked on multi-tenant platforms, real-time conversational AI systems, workflow orchestration, payment systems, and infrastructure reliability. I enjoy solving complex engineering problems around scalability, performance, observability, and system design. Currently, I’m leading backend and AI platform development at Reddoak, where I work on production-critical systems including AI voice platforms, RAG architectures, distributed workflows, and high-volume SaaS infrastructure.
When I'm not coding, you'll find me exploring new technologies, contributing to open source, or writing about what I've learned on my blog.
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I'm always open to interesting projects and opportunities. Whether you have a question or just want to say hi — feel free to reach out.
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Model selection and effort level solve different problems. The model controls Claude’s underlying capability; the effort level controls how much work Claude does before responding.

How a database capacity problem masqueraded as a subscription issue, why async Celery workers were quietly leaking connections, and the three-layer fix that stopped it from coming back.

Claude Fable 5 and Claude Mythos 5 were temporarily suspended after the US government applied export controls on June 12, requiring Anthropic to restrict access to foreign nationals. Because Anthropic says it had no reliable way to verify nationality in real time, it suspended both models for all users. Those controls were lifted on June 30, and Fable 5 was restored globally starting July 1 across Claude Platform, Claude.ai, Claude Code, and Claude Cowork.
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