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Lao Guo's Learning Space
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Lao Guo's Learning Space

AI learning, discussion, and hands‑on practice with self‑reflection

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Recent Articles

Latest from Lao Guo's Learning Space

76 recent articles
Lao Guo's Learning Space
Lao Guo's Learning Space
Sep 22, 2026 · Industry Insights

M5 Ultra 64 vs 80 Core GPU: What ¥9750 Buys – Not Faster LLM Decoding

The article compares Apple M5 Ultra 64-core and 80-core GPU variants, revealing that the ¥9750 price difference adds 16 GPU cores, 6 CPU cores, and 512GB memory support, but identical 1.2TB/s memory bandwidth means LLM decoding speed remains unchanged; the upgrade only benefits GPU-intensive tasks like 3D rendering and video effects.

3D renderingApple M5 UltraGPU cores
0 likes · 10 min read
M5 Ultra 64 vs 80 Core GPU: What ¥9750 Buys – Not Faster LLM Decoding
Lao Guo's Learning Space
Lao Guo's Learning Space
Sep 21, 2026 · Artificial Intelligence

M5 Ultra 256GB: Which LLMs Fit? 27B to 200B+ Capacity Analysis

The article analyzes Apple M5 Ultra 256GB unified memory capacity for local LLM inference, showing Q4-quantized models from 27B to 200B+ fit, but KV cache overhead for long contexts reduces headroom; it compares with multi-GPU setups and advises on purchase decisions.

Apple SiliconHardware AnalysisKV Cache
0 likes · 8 min read
M5 Ultra 256GB: Which LLMs Fit? 27B to 200B+ Capacity Analysis
Lao Guo's Learning Space
Lao Guo's Learning Space
Sep 20, 2026 · Artificial Intelligence

FastMetal: Run Text-to-Video Locally on Mac with Apple Silicon

This tutorial explains FastMetal, a local text-to-video solution for Apple Silicon Macs that uses DMD2-distilled Wan models with INT8 quantization to generate 5-second videos in 30 seconds offline, covering installation, model selection, and advanced usage.

Apple SiliconDMD2FastMetal
0 likes · 19 min read
FastMetal: Run Text-to-Video Locally on Mac with Apple Silicon
Lao Guo's Learning Space
Lao Guo's Learning Space
Aug 20, 2026 · Artificial Intelligence

How Transformers Use Positional Encoding to Distinguish "I love you" vs "You love me"

The article explains why vanilla Transformers cannot sense word order, introduces sinusoidal positional encoding as the elegant solution, compares it with learned and relative encodings, and shows how modern variants like RoPE preserve both absolute and relative positions for long texts.

Learned EncodingPositional EncodingRelative Position
0 likes · 9 min read
How Transformers Use Positional Encoding to Distinguish "I love you" vs "You love me"
Lao Guo's Learning Space
Lao Guo's Learning Space
Jul 2, 2026 · Artificial Intelligence

Learn AI from Scratch: 4 Stages to Save Two Years of Mistakes

This article presents a four‑stage learning roadmap—from foundational math and Python, through core machine‑learning concepts and classic algorithms, to deep‑learning fundamentals and large‑model practice—offering concrete resources, hands‑on project ideas, and common pitfalls to help beginners become project‑ready in 6‑10 months.

AI learning roadmapLarge Language ModelsMath foundations
0 likes · 12 min read
Learn AI from Scratch: 4 Stages to Save Two Years of Mistakes
Lao Guo's Learning Space
Lao Guo's Learning Space
Jun 13, 2026 · Industry Insights

Why the US Government Shut Down Claude Fable 5 After Just Four Days

The US Commerce Department issued an emergency export‑control order that forced Anthropic to halt access to Claude Fable 5 and Mythos 5 worldwide within four days of launch, citing a narrow, non‑general jailbreak that could fix code vulnerabilities and thus posed a national‑security threat.

AI regulationAnthropicClaude Fable 5
0 likes · 12 min read
Why the US Government Shut Down Claude Fable 5 After Just Four Days
Lao Guo's Learning Space
Lao Guo's Learning Space
Jun 12, 2026 · Artificial Intelligence

Claude Fable 5 Deep Dive: First Public Mythos‑Level Model That Crushes All Benchmarks

Anthropic’s Claude Fable 5, released on June 9, is the first publicly available Mythos‑level model that outperforms competitors across code, reasoning, and visual benchmarks, demonstrates autonomous long‑run operation, powers real‑world cases like Stripe’s massive code migration, and introduces a controversial safety‑degradation system.

AI benchmarksAI collaborationClaude Fable 5
0 likes · 11 min read
Claude Fable 5 Deep Dive: First Public Mythos‑Level Model That Crushes All Benchmarks