Claude models explained: Opus 5.5, Fable 5.1, Mythos and why there's no Opus 5.1
The newest Opus beats the flagship on Anthropic's own benchmark table, but the flagship is still the one Anthropic tells you to move up to.
Guides
Each one answers a single question. Which Claude model should you pick? What does a Codex plan get you?
Which model is which
What each lab calls its models, and which ones you can actually use today.
Codex models and plans explained: GPT-6 Astra, Sol and Luna, and which plan gets which
Pick any GPT-6 model you like on your laptop, but a Codex cloud task on a ChatGPT plan still runs on last generation's Sol.
Gemini models explained: 3.8 Flash vs Flash-Lite vs 3.1 Pro, with every release date
Google has shipped six Flash and Flash-Lite models since May, but the newest Pro you can call is still a February preview.
Grok 4.7, Grok 4.8 and Grok Build: which Grok is out and what each one is for
Grok 4.7 shipped ten days after Musk said it needed a few more days, and the next one has a size but no date.
Meta Muse models explained: Muse Spark 1.3, 1.2, 1.1 and Glimmer, with release dates
Meta's frontier models stopped being called Llama in April, and the only Muse you can download so far is the small one.
OpenAI model release dates: o3, GPT-5.5 and GPT-6 Astra, Sol and Luna in order
o3 is from April 2025, and the name Sol now means something different from what it meant in July.
Qwen models explained: Qwen3.8 Max, Flash and 27B, open weights vs API, with release dates
Alibaba put its Max-class Qwen out as open weights for the first time, and skipped open weights for Qwen3.7 entirely.
Plans, prices and limits
What a subscription really buys. One guide prices the same job on 48 models.
Claude Code vs Codex vs Gemini CLI: which plan you need and which models you get
One of the three stopped serving individual subscribers in June, but its own docs still advertise the free tier it closed.
ChatGPT Pro $200 plan sign-ups paused: what it blocks
Two hundred dollars a month bought four times the Astra allowance of the hundred-dollar plan, which is the arithmetic behind the pause.
We priced 48 AI models on the same job. The bill ran from 19 cents to $89.
One month of steady use, list prices only, the same words in and the same words out.
Claude Code's /limit-reset, and what it actually resets
A command that turns your five-hour session limit back on, once in a while, and tells you when you can do it again.
Build and run it yourself
Hardware for running models at home (plus the free tools that let an AI help you make things).
Best GPU for Local LLMs: What Each VRAM Tier Runs
Which open models fit a 16, 24, 32, 48 or 96 GB graphics card, a Mac mini or Mac Studio, or a Ryzen AI Max mini PC, worked out from real GGUF file sizes, plus what Ollama needs.
Free tools that let an AI help you build: Unreal, Blender, Godot and Krita
Two game engines, a 3D app and a paint program, and how an AI assistant gets its hands on each one.
Which AI labs publish an RSS feed, and which make you scrape
We checked all of them the boring way, by asking for the feed and seeing what came back.
The day's stories are on the news page, and the long reads are in Musings.