Editor · 194 articles
Eugene Serbin, page 3
Prompt Caching: How It Works and What It Actually Saves
Prompt caching lets a model skip work it has already done. When two requests begin with the same text — the same system prompt, the same document, the same conversation…
How to Run an LLM Locally With Ollama
Running a large language model on your own computer takes two commands. The first installs Ollama, the second downloads a model and starts a chat:
Claude Skills: What They Are and How to Write Your First Skill
A skill is a folder with a SKILL.md file in it. Inside are instructions that teach Claude how to do a particular job the way you want it done, plus any scripts,…
Vector Databases: How They Work and How to Choose One
A vector database stores embeddings, the numeric vectors that represent the meaning of text, images or audio, and finds the ones closest to a query vector. It is the…
What Is RAG? Retrieval-Augmented Generation Explained With a Working Example
Retrieval-augmented generation (RAG) is a way to make a large language model answer from information it was never trained on. Before the model responds, a search step…
Claude Sonnet 5 Keeps Its $2 / $10 Price: Anthropic Cancels the Planned Increase
Anthropic launched Claude Sonnet 5 on June 30, 2026, at an introductory price of $2 per million input tokens and $10 per million output tokens, with a scheduled increase…
DeepSeek V4.1 Flash Arrives With Lower Prices, and V4 Pro Gets a Reprieve
DeepSeek released DeepSeek-V4.1-Flash on September 10, 2026, and changed its API prices the same day at 04:00 UTC. The announcement also said the larger V4 Pro would be…
Gemini 3.8 Flash Launch Pricing Ends December 31: API Price Doubles in 2027
Google made Gemini 3.8 Flash generally available in the Gemini API on September 2, 2026. The release notes call it Google's most intelligent Flash model, aimed at…
GPT-5.5 Leaves ChatGPT and Codex on October 14, but Stays in the OpenAI API
OpenAI will remove GPT-5.5 from ChatGPT, ChatGPT Work and Codex on October 14, 2026, across all plans. The company announced the change from its @ChatGPT account on…
GPT-5.6 Sol's $4 / $20 API Price Is a Promotion Through at Least November 21
OpenAI lowered the API price of GPT-5.6 Sol on August 21, 2026, to $4 per million input tokens and $20 per million output tokens. The changelog describes it as 20% lower…