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![Portrait of Rafael Duarte](/assets/rafael-duarte-CUvpPE4y.jpg)

# Rafael Duarte

Frameworks & Infrastructure Reporter

São Paulo, Brazil · Joined 2025

Rafael reports on the frameworks, runtimes, and infra powering modern AI stacks — from orchestration layers to vector stores to the boring plumbing that decides whether a launch ships.

He reads changelogs so you don't have to, and files close looks at the tradeoffs behind every new SDK version.

[rafael@agentcrunch.ai](mailto:rafael@agentcrunch.ai)· [agentcrunch.ai/author/rafael-duarte](/author/rafael-duarte)

[X @rafaelduarte ](https://x.com/rafaelduarte)[LinkedIn in/rafaelduarte ](https://www.linkedin.com/in/rafaelduarte/)[GitHub @rafaelduarte ](https://github.com/rafaelduarte)[Mastodon @rafael@hachyderm.io ](https://hachyderm.io/@rafael)

LangChain & LlamaIndex Vector databases LLM serving infrastructure 

## Stories by Rafael

[01 

Frameworks 

### Sepia: Rewriting AI Text to Sound Human Again

Explore Nanako0129/sepia, the open-source framework reversing AI writing effects. Discover its narrative repair and venue-matching techniques for Claude, Codex, Grok, and Antigravity.

12 Minutes · Aug 29, 2026



](/article/sepia-deai-writing-framework)[02 

Frameworks 

### DeepSeek-GPT-OSS: AI Without the Filters?

Explore DeepSeek-GPT-OSS, an open-source AI model designed to bypass censorship. Discover its capabilities, risks, and implications for AI development in 2026.

8 Minutes · Aug 28, 2026



](/article/deepseek-gpt-oss-uncensored-ai)[03 

Frameworks 

### RubyLLM: Unlock Any AI Provider from Ruby

Discover RubyLLM: the open-source framework simplifying AI integration for Ruby developers. Connect to OpenAI, Google AI & more with a unified API. Avoid vendor lock-in & innovate faster.

9 Minutes · Aug 26, 2026



](/article/rubyllm-ai-provider-framework-4)[04 

Frameworks 

### RubyLLM: Unlock Any AI Provider from Ruby

Discover RubyLLM: the open-source framework simplifying Ruby app integration with major AI providers like OpenAI, Google, and Anthropic. Learn how it streamlines AI adoption.

8 Minutes · Aug 17, 2026



](/article/rubyllm-ai-provider-framework-3)[05 

Frameworks 

### RubyLLM: Connect Ruby Apps to Any AI Provider

Explore RubyLLM, the new open-source framework simplifying integration with OpenAI, Google, and Anthropic for Ruby developers. Discover its features, benefits, and how it streamlines AI app development.

8 Minutes · Aug 8, 2026



](/article/rubyllm-ai-provider-framework-2)[06 

Frameworks 

### openclaude-improved: AI models anywhere

Discover 0xwilliamortiz/openclaude-improved, a revolutionary open-source project making powerful AI models like Claude accessible virtually anywhere, empowering developers with unprecedented deployment flexibility.

9 Minutes · Jul 28, 2026



](/article/openclaude-improved-runs-anywhere)

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