The S5 Labs library
The notebook,
wide open.
Technical guides, reference material, current news, and thoughts on AI, automation, and software. Pick a topic or follow a question.
Search the libraryThe reference desk
Choose the model.
Understand the machine.
Two guides to keep close when you’re exploring open models and running AI locally.
Capabilities · Licensing · Deployment
Open-source AI models
Compare model families, understand open-weight licensing, and find a starting point for evaluation.
Read the model guideMemory · Hardware · Local inference
Local LLM machines
Compare machine classes, memory limits, and the practical tradeoffs of running models on your own hardware.
Read the hardware guideFollow a topic.
A curated starting point, with room to go deeper.
Artificial intelligence
Evaluate where AI is useful, understand the systems behind it, and make informed choices about models, data, and deployment.
02Workflow automation
Map the work, connect the tools, and build repeatable processes with clear ownership and exception handling.
03Software engineering
Practical architecture and development decisions for software that people can use, maintain, and adapt.
Technical foundations.
Browse technical guidesHow AI Watermarking Works: Text, Images, Audio, and What the Mark Actually Proves
How AI watermarks work in text, images, audio and video, what C2PA adds, what Article 50 and California's SB 942 require, and what a detected mark proves.
One Shared Key Let Anyone Decode What Claude, GPT and Gemini Were Hiding in Their Reasoning
One shared key sealed the reasoning blocks Anthropic, OpenAI and Google return to clients, letting a weaker model decode a stronger sibling's thoughts.
How AI Finds Vulnerabilities: Fuzzing, Reasoning, and Validation
How AI agents find software vulnerabilities: hybrid fuzzing, static analysis, LLM reasoning, validation, benchmarks, and patch workflows.
Latest insights.
Browse insightsClaude Opus 5.5 Cuts Costs and Changes Conversation Handling
Anthropic's Opus 5.5 release lowers token prices. Its preserved-thinking rules also make conversation history a migration concern for custom agents.
GPT-6 Sol and Luna Bring Lower Prices to Agent Work
OpenAI releases GPT-6 Sol and Luna with lower prices and a shared million-token context window. Compare costs, caching and migration constraints.
Anthropic's Agent Metrics Put Review Delays in Focus
Anthropic proposes metrics for AI research and agent oversight. What coverage, review latency and escalation rates can tell an engineering team.