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●PRICING — September 1 was the scheduled date for the Sonnet 5 price increase, and it did not happen. The introductory $2/$10 per MTok now stands as the regular price●PARTNER — Salesforce and Anthropic announced Claudeforce, an expanded partnership. The Salesforce in Claude plugin ships with 37 prebuilt sales skills, from meeting prep to pipeline management●TRUST — Claudeforce serves Claude through Amazon Bedrock inside the Salesforce Trust Boundary, so data and inference never leave the security perimeter — an answer aimed squarely at regulated industries●BETA — Salesforce in Claude is with select pilot customers for now, with an open beta expected during September●LIMITS — The 50% weekly-limit boost runs through September 13. From September 14 the permanent level is 25% above the pre-promotion baseline, roughly a 17% cut from today●RELEASE — Claude Code has shipped nothing since v2.1.251 on August 28. Against a pace of one release every 0.8 days, a four-day gap is among the longest yet●PRICING — September 1 was the scheduled date for the Sonnet 5 price increase, and it did not happen. The introductory $2/$10 per MTok now stands as the regular price●PARTNER — Salesforce and Anthropic announced Claudeforce, an expanded partnership. The Salesforce in Claude plugin ships with 37 prebuilt sales skills, from meeting prep to pipeline management●TRUST — Claudeforce serves Claude through Amazon Bedrock inside the Salesforce Trust Boundary, so data and inference never leave the security perimeter — an answer aimed squarely at regulated industries●BETA — Salesforce in Claude is with select pilot customers for now, with an open beta expected during September●LIMITS — The 50% weekly-limit boost runs through September 13. From September 14 the permanent level is 25% above the pre-promotion baseline, roughly a 17% cut from today●RELEASE — Claude Code has shipped nothing since v2.1.251 on August 28. Against a pace of one release every 0.8 days, a four-day gap is among the longest yet
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Prompt Caching

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Claude API6cost optimization3pricing2Sonnet 51cost estimation1Tool Use1Architecture1Cost Optimization1Cost Management1Operations1Haiku 4.51streaming1
⬡ API & SDK/2026-08-23Beginner

The September Price Increase for Sonnet 5 Isn't Happening. Rebuilding a Forecast I Got Wrong in July

Sonnet 5's introductory $2/$10 pricing was supposed to rise to $3/$15 on September 1. It won't. Here's how to recompute your own effective cost from the usage numbers you already have, with working code.

⬡ API & SDK/2026-08-01Advanced

Swapping Tools Mid-Conversation Without Losing Your Prompt Cache

Tools can now be added and removed between turns, but the tool block sits at the very front of the cache prefix. I measured 12 mutation patterns with fingerprints and built a stable-core plus volatile-tail registry with a guard that refuses unsafe changes.

⬡ API & SDK/2026-06-22Advanced

When Your Claude API Cost Math Doesn't Match the Bill: Accounting for the Four Token Buckets

Turn on prompt caching and your homegrown cost tally drifts from the console bill. Here is how to weight the four token buckets the usage object returns and build a ledger you can reconcile.

⬡ API & SDK/2026-05-12Advanced

Combining Haiku 4.5, Streaming, and Prompt Caching to Cut Costs in a Personal App — An Implementation Record

A hands-on record of combining Claude Haiku 4.5, streaming, and prompt caching to improve both cost and response speed in a personal iOS/Android app — including the mistakes made along the way.

⬡ API & SDK/2026-04-24Advanced

Claude API Micro-SaaS Pricing Blueprint — Blending Usage, Subscription, and Freemium for Durable Margins

A practical blueprint for pricing a Claude API powered micro-SaaS: how to reverse-engineer healthy margins from token economics, blend usage-based, subscription, and Freemium models, and launch prices you can adjust without breaking trust.

⬡ API & SDK/2026-04-07Advanced

Vertex AI × Claude Enterprise Integration Guide: Prompt Caching, Multimodal, and Agent Design

A practical guide to enterprise-grade Claude integrations on Google Cloud Vertex AI. Covers prompt caching, BigQuery logging, multimodal processing, agent design, RAG, and production-ready patterns.

⬡ API & SDK/2026-04-02Intermediate

Anthropic API Cost Optimization Guide: Cut Your Monthly Bill by 50–70%

A complete guide to reducing your Anthropic API costs by 50–70%. Covering model selection, Prompt Caching, batch processing, and token reduction — with production-ready code you can apply to your app today.

⬡ API & SDK/2026-03-30Beginner

Claude API Pricing Guide 2026 — Complete Cost Breakdown for Every Model, Batch API, and Prompt Caching

A complete guide to Claude API pricing in 2026. Learn the per-token costs for Opus 4.6, Sonnet 4.6, and Haiku 4.5, how to save up to 95% with Batch API and Prompt Caching, and see real-world cost estimates for common use cases.