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Models

Frontier and open models: releases, capabilities, pricing and published results, and what each one changes.

35 stories

All Models stories · 35

Models · ExplainerDecision models explained: Microsoft-Decision-1, OpenAI's Decisions API and when to use themMicrosoft-Decision-1 and OpenAI's Decisions API don't write text. They score a fixed set of answers and return probabilities your code can act on. How decision models work, what they cost, and where they fit: classification, routing and verification.Oct 13·7 min read

Models · ExplainerMeta Muse Spark explained: the closed model behind Meta AI, the Muse agent app, and what's openMuse Spark, launched April 8, 2026, is Meta's proprietary replacement for Llama at the top of its lineup. It now powers Meta AI, the Muse personal agent (on iPad since October 7) and a paid API. What it is, what it costs, and how much of it is actually open.Oct 13·7 min read

Models · NewsGoogle's Gemini 4 Argon is here, but only cyber defenders can use it so farGoogle announced its new frontier model on September 30 with a $2/$10 introductory API price. A week later, access is still limited to vetted security partners.Oct 9·6 min read

Models · NewsGPT-6 reaches every ChatGPT user: what OpenAI shipped, what it costs, and where each model runsFour GPT-6 models in five weeks, split across ChatGPT's Chat and Work tabs, Codex and the API. Here's the verified map, with prices.Oct 9·6 min read

Models · AnalysisWhat the Claude Opus 5.5 system card actually saysAnthropic's system card for Opus 5.5 runs past 220 pages. What it says on bio and cyber risk, sandbox escapes, prompt injection and alignment, and what it leaves out.Oct 9·7 min read

Models · AnalysisDo AI labs really ship 'mini' models first? What the release record since 2024 showsAcross 32 small-vs-flagship pairings from six labs, the small model came first only five times. Here's what really drives the timing, and the price war at the bottom.Oct 9·9 min read

Models · BenchmarksLong-context recall: what independent benchmarks say "1 million tokens" really buys youEvery frontier API now accepts about a million tokens. Independent evaluations from RULER to ATLAS show how much of that window models actually use.Oct 9·9 min read

Models · ExplainerHow to choose a small AI model for your laptop: the memory math and the current shortlistParameters, quantization and context length decide whether a model fits. Here's how to do the arithmetic, and which open models to try at 8, 16 and 32 GB.Oct 9·7 min read

Models · ExplainerReasoning models explained: thinking tokens, what they cost, and when to use themClaude, GPT-6 and Gemini all bill hidden thinking as output tokens. How each vendor exposes it, what it costs in practice, and when to turn it down.Oct 9·7 min read

Models · GuideWhich Claude model should you use? The current lineup and official pricesOpus 5.5 is Anthropic's default pick, Haiku 5.5 (October 7, 2026) is far cheaper than Haiku 4.5, and Fable 5.1 is for the hardest jobs. The verified lineup, every price, and how to choose.Oct 9·9 min read

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