#コスト最適化 articles

Claude Code の effort とは｜low〜max の違いと使い分け

Claude Code の effort 設定を一次情報で解説。/effort コマンドの使い方、low〜max の 5 段階の違い、モデル別デフォルト、ultracode・ultrathink との関係、API での指定方法まで整理します。

Claude Sonnet 5 の料金と使い分け｜Opus との違い・コスト戦略

Claude API Pricing | Cost Optimization with Per-Model Rates and Reduction Techniques

A practical breakdown of Claude API costs: per-token rates for the latest models, monthly estimates, 90% savings with prompt caching, and 50% discounts via Batch API. June 2026 edition.

Vertex AI Claude Pricing | Opus/Sonnet Rates & Bedrock Comparison

A breakdown of Claude pricing via Vertex AI, model by model. Covers the same rate structure as the Anthropic direct API, the 10% premium for regional endpoints, and discounts available through Batch API and Prompt Caching.

Bedrock Claude Pricing | Per-Token Rates and Cost Reduction for Opus, Sonnet, and Haiku

A breakdown of Claude pricing on Amazon Bedrock by model — Opus 4.x, Sonnet 4.6, and Haiku 4.5 — covering per-token rates, the difference between global and regional endpoints, Prompt Caching, 50% Batch API discounts, a comparison with Claude Platform on AWS pricing, and four practical cost-reduction strategies.

A Practical Guide to Preventing Claude Code Cost Explosions (2026 Edition)

Practical techniques to prevent runaway Claude Code costs. Three approaches — CLAUDE.md optimization, model selection, and session management — to reduce monthly costs by 75–85%.