Models
Claude's model lineup and how to choose. Opus, Sonnet, and Haiku compared, guides to the latest models such as Opus 5 and Sonnet 5, and comparisons with ChatGPT and Gemini.
20 articles
Claude Opus 5.5 Complete Guide: Fable 5.1-Level Performance for Less Than Opus 5 — Pricing, Plans, Migration
Released September 22, 2026, Claude Opus 5.5 performs at Fable 5.1 level on most work and costs 40% less than Opus 5. API pricing ($4/$20), plan availability, higher five-hour limits and the usage reset, plus the five breaking changes when migrating from Opus 5 — all from official docs.
Is Claude Fable 5.1 Nerfed? The Real Reasons Behind the Complaints
Some users feel Claude Fable 5.1 got weaker overnight. Here's what Anthropic's own documentation says is actually happening, and how to check your settings.
Back on Claude Fable? Here's What to Check First
If you tried another AI and came back to Claude Fable, here's how to switch to Fable 5.1, what changed in subscription terms, and how the automatic fallback to Opus works.
What Is the GPT-6 Astra 'Sweet Spot'? Choosing a Reasoning Effort Setting (and How Claude Compares)
GPT-6 Astra's reasoning effort setting has a widely discussed cost-to-performance 'sweet spot.' Here's what that means, and how the pricing compares to Claude Opus 5 and Sonnet 5.
Using Claude as Your Main Agent Alongside Other AI Tools
As more people use ChatGPT, Gemini, and Claude side by side, many want to know how to use one AI as a coordinating hub. Here's a beginner-friendly guide to setting up Claude as that main agent.
GPT-6 Astra vs Claude Fable 5.1: What's Actually Different
We compare OpenAI's new GPT-6 Astra with Claude Fable 5.1 on pricing, context window, and safety design, and explain what it means for Claude subscribers.
GPT-6 Astra Is Here: What It Means for Claude Users
OpenAI unveiled GPT-6 Astra in September 2026. Here is the rollout timeline, its computer-use feature, cybersecurity classification, and pricing, explained for Claude users.
Claude Fable 5.1 guide: what changed from Fable 5 — pricing, plan terms, and migration
Claude Fable 5.1 launched on September 1, 2026. Same $10/$50 pricing, cache reads at a quarter of the cost, a June 2026 knowledge cutoff — plus plan-by-plan terms and the API migration caveats, all from the official docs.
Are Chinese AI Models Unfairly Bashed? Real Concerns vs. Bias
Online reactions to Chinese AI models mix real technical praise with well-documented concerns. Here's what's fair criticism and what's bias, based on verified reporting.
Claude Opus 5: The Complete Guide — Near-Fable 5 Intelligence at Half the Price
Anthropic released Claude Opus 5 on July 24, 2026 — near-Fable 5 intelligence at half the price ($5/$25), now the default on Claude Max. Specs, benchmarks, safeguards, and migration, explained.
Claude vs ChatGPT vs Gemini: Why the Right Pick Depends on the Task
A practical decision guide for choosing between Claude, ChatGPT, and Gemini by task type — coding, writing, and image work, laid out in a simple table.
Claude Sonnet 5 Complete Guide: What's New, Pricing, and Migration Gotchas
A rundown of Claude Sonnet 5's specs and improvements, the standard pricing now in effect since September 1, 2026, and the three migration gotchas that return 400 errors.
Claude Fable 5 Is Back: Restored Access, Usage Terms & What Changed
Claude Fable 5 is available again as of July 1. Here is the restoration schedule, usage terms by plan, and what changed in the redeployed version.
Claude Model Selection Guide: Opus 5 vs Sonnet 5 vs Haiku 4.5
A side-by-side comparison of Claude Opus 5, Sonnet 5, and Haiku 4.5 — and a clear guide to picking the right model for your task.
Claude Fable 5 & Mythos 5: The Complete Guide
Fable 5 and Mythos 5, the first models in Claude's 5th generation: how they differ, plus specs, pricing, safeguards, the Opus fallback, and API changes — based on official sources. (Successors Fable 5.1 and Mythos 5.1 were released September 1, 2026 — see the separate guide.)
Claude Opus 4.8: The Complete Guide to What's New and How to Use It
A practical guide to Claude Opus 4.8 (released May 28, 2026): key specs and what changed from 4.7 — improved honesty, effort control, fast mode, and mid-conversation system messages — based on official sources.
Claude Models Compared: Haiku vs Sonnet vs Opus 5.5 — Which Should You Use? (September 2026)
A plain-language comparison of Claude's three model tiers — Haiku, Sonnet, and Opus — with a concrete guide on which to pick. Updated for the current lineup: Haiku 4.5 / Sonnet 5 / Opus 5.
Claude vs Gemini: Key Differences and Which to Choose
A fair comparison of Claude and Gemini by price, models, strengths, and image generation. Coding/docs lean Claude; Google integration and image/video lean Gemini.
Claude vs ChatGPT: Differences, Pricing and Which to Use (2026)
How Claude and ChatGPT differ, checked against official sources: makers, images, voice and search, plans, GPT-6 vs Claude API prices, and how to choose.
Claude Opus 4.7: The Complete Guide to New Features and Specs
Key specs, new features (xhigh, Task Budgets, /ultrareview), performance gains, and tokenizer-change cautions for Claude Opus 4.7, released April 16, 2026.