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Claude 5.1: Cheaper cache, costlier tasks

Thu 03 September 2026

75% cache read cut, but 1.7x output tokens per task

ProofCache reads dropped to $0.25/MTok
Best forLong-horizon coding & knowledge work
Available viaAnthropic API
Try itRun a multi-step coding task with long context

Key takeaways

  • Why it matters: Better for autonomous, long-running tasks with improved failure reporting.
  • Before you switch: Net per-task cost may rise 20% due to higher output token usage.

Source: Latent Space

Sources are linked above.

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