Packaging change·Jul 6 → Oct 4, 2025·Q3 2025·AI & Machine Learning

Anthropic API Introduces Tiered Pricing and Prompt Caching for Sonnet 4.5, Restructuring Costs Based on Token Length

AnthropicPackagingPlan renamedFeature changeThreshold addedPackage change

What changed

Plan renamed

Claude Opus 4 renamed to Opus 4.1

Feature change

Batch service tier description changed from 'Save 50% by processing asynchronous workloads together' to 'For asynchronous workloads that can be processed together for better efficiency'

Plan renamed

Claude Sonnet 4 renamed to Sonnet 4.5

Threshold added

Sonnet 4.5 prompt caching introduced tiered thresholds at 200K tokens for write ($3.75/MTok for ≤200K, $7.50/MTok for >200K) and read ($0.30/MTok for ≤200K, $0.60/MTok for >200K)

Package change

Sonnet 4.5 introduced tiered pricing based on prompt length: input $3/MTok for ≤200K tokens and $6/MTok for >200K tokens; output $15/MTok for ≤200K tokens and $22.50/MTok for >200K tokens

Before and after

Jul 6, 2025 vs Oct 4, 2025

Pulse.

100%

Change 1 of 5 · plan renamed

Claude Opus 4 renamed to Opus 4.1

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Q2 2025 · Anthropic API Introduces Code Execution Tool with 50 Free Hours Daily, Enhancing Service Offerings and Flexibility for Users Anthropic API Cuts Flagship Opus Model Prices by 67% in Major Update to Version 4.5, Launching New Pricing Structure · Q4 2025

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