ChatGPT Claude
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Claude Opus 5.5 is cheaper and always thinks
On 22 September, Anthropic released Claude Opus 5.5 and retired Opus 5 with it. Two things stand out right away: the model costs a fifth less than its predecessor and thinking can no longer be switched off. Opus 5.5 is available on ChatX from today. What changes compared to Opus 5 Thinking is now mandatory…
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Claude Opus 5 and Fable 5.1 compared
Anthropic renewed two models within a few weeks. Claude Opus 5 replaced Opus 4.8 at the same price, and Claude Fable 5.1 remains the flagship while becoming cheaper to run. On ChatX, Fable now costs about two and a half times what Opus costs. This article puts the numbers in order and sums up what…
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Claude Opus 4.8 brings more control to Claude Code
With Claude Opus 4.8, Anthropic is focusing less on single peak scores and more on reliable day-to-day performance. The model is meant to stick with tasks longer, be more honest about its progress, and adapt better to large projects in Claude Code. For regular users, what matters most is the new control over how much…