Which Claude model should I use? Cost guide
Opus 5.5, Sonnet 5.5 or Haiku 5.5? The October 2026 rates per model, a worked cost comparison on 100,000 jobs, and the settings that move a bill most.
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Which models Claude Max gives you
Which Claude models each paid plan includes, and why the most capable one runs out first while the rest of your Claude Max allowance is still there.