LLM

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  LLM

  Opus 5.5 Is 40% Cheaper Because the Default Effort Dropped

  Claude Opus 5.5 and GPT-6 Sol both launched on 22 September as cheaper models. Anthropic says Opus 5.5 costs 40% less than Opus 5 at default settings, but a request that omits effort now runs at medium instead of high, and at the same effort label the model thinks more per turn. Set effort explicitly, log it, and sweep two levels on your own tasks.

  Marco Kotrotsos·7 Nov 2026·6 min read
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  Architecture

  The Pilot-to-Production Gap Is Where AI Projects Go to Die

  GPT-5.4 can handle a million tokens. But most application architectures were designed for 4K-32K contexts, and the jump to 1M doesn't just expand capacity, it breaks fundamental assumptions about how you build.

  Marco Kotrotsos·11 Mar 2026·4 min read