DeepSeek vs. OpenAI's OSS: A Tale of Two Open-Source Models

Two major players recently dropped new open-source models, but they represent two fundamentally different philosophies. OpenAI, the established leader, returned to the open-source scene with fanfare and its gpt-oss-20b model. Shortly after, the Chinese startup DeepSeek quietly released v3.1. While one was a media event, the other was a single tweet. The initial results from hands-on testing are starkly one-sided. Out-of-the-Box Performance: A Clear Winner When you evaluate a model as a tool to be used right now, the comparison is not even close. Across multiple practical tests, DeepSeek v3.1 consistently delivered superior results: ...

27 August, 2025 · 4 min · 654 words · Yury Akinin

Beyond the Interface: 5 Key Differentiators of Modern AI Models

Users see a chat window. Sometimes voice, sometimes images. But behind this familiar interface lie radically different architectures and capabilities. Here are five key parameters that distinguish the top AI models in 2025: 1. Memory (Context Window) This defines how much information a model can retain within a single conversation. GPT-4o: 128k tokens (~300 pages of text) Claude 3 Opus & Gemini 2.5 Pro: Up to 1 million tokens (~2,000 pages) DeepSeek-VL Mini: ~8k tokens (~20 pages) More memory enables greater context and reduces hallucinations, but it also demands more powerful hardware. ...

19 April, 2025 · 2 min · 367 words · Yury Akinin

Models Are Tools, Not Events: The Real Meaning Behind GPT-4.1 and the End of GPT-4.5

Yesterday, OpenAI opened access to the GPT-4.1 API. It’s a refined version of their flagship model—faster and architecturally closer to the concept of ‘agents.’ In parallel, the company officially announced it is winding down GPT-4.5, its most resource-intensive model, due to its excessive complexity and support challenges. With GPT-4.5, it seems they hit an architectural dead end. We are at a point where models appear and disappear rapidly. They are becoming what they should be: tools, not landmark events. We have a growing catalog of specialized AIs: some calculate, others write code, plan tasks, or generate video. But the average user should not be expected to know and choose between every AI in existence. That paradigm defies the logic of good user experience. ...

15 April, 2025 · 2 min · 269 words · Yury Akinin