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AI API

Claude Haiku 5.5 Guide: Tiered API Pricing, Differences from Haiku 4.5, and Migration

Anthropic released Claude Haiku 5.5 on 2026-10-07. For prompts up to 100,000 tokens it costs just $0.10/$0.50 per million tokens, one tenth of Haiku 4.5. But a request whose prompt is over 100,000 tokens is billed at $0.50/$2.50 in full, and the new tokenizer counts the same text as roughly 30% more tokens. This guide covers official specs, both price tiers, cost math that accounts for both traps, and the changes that break or alter behavior when migrating from Haiku 4.5.

#Claude Haiku 5.5#Claude Haiku 4.5#Claude API
15 min min read
AI API

Gemini 4 Argon Guide: API Pricing (Intro Rate Through Nov 30), Specs, and Migrating from Gemini 3

Google made its flagship Gemini 4 Argon generally available (GA) to developers on 2026-10-13. The introductory price of $2/$10 only runs through 2026-11-30; from 12-01 it moves to $4/$20, and there is no free tier. This guide covers the official specs (1M context, output up to 1M, three thinking levels), both price stages for every consumption option, cost math, how it splits work with Gemini 3.8 Flash, and the settings to change when moving from the Gemini 3 family.

#Gemini 4 Argon#Gemini API#Google
13 min min read
AI API

Claude Opus 5.5 and Sonnet 5.5: API Pricing, Migration Changes, and Model Choice

Anthropic released Claude Opus 5.5 (Sept 22) and Sonnet 5.5 (Sept 28) in September 2026. Opus 5.5 is priced at $4/$20 — 20% below Opus 5 — and is now Anthropic's official default for most workloads; Sonnet 5.5 stays at $2/$10. This guide covers official specs, cache pricing, cost math, and the API changes that break code migrating from Opus 5 or Sonnet 5.

#Claude Opus 5.5#Claude Sonnet 5.5#Claude API
10 min min read
AI API

GPT-6 Astra, 6.1 Sol, Luna: API Pricing, Specs, and Which to Pick

OpenAI shipped GPT-6 Astra, GPT-6 Sol and Luna, and GPT-6.1 Sol within one month in September 2026. This guide covers the official API pricing for all four models ($10/$50, $2/$10, $0.10/$0.50), the long-prompt pricing rule behind the 1M context window, real cost math, and the code settings to change when migrating from GPT-5.6 — now also covering GPT-6.1 Terra ($1/$5), added on October 26.

#GPT-6#GPT-6 Astra#GPT-6.1 Sol
13 min min read
Information Security

AI Agent Long-Term Memory Is the New Attack Surface: What MemGhost and GhostWriter Mean for Enterprises

Two independent research efforts show AI Agent long-term memory can be poisoned: MemGhost plants false information via a single email with up to 87.5% end-to-end success, while GhostWriter reports roughly 98% memory injection success. This article breaks down how memory poisoning differs from ordinary prompt injection, how connectors expand the risk radius, and what enterprises should evaluate before deployment.

#AI Agent#cybersecurity#memory poisoning
18 min min read
Information Security

EU AI Act Article 50 Transparency Obligations: Applicable August 2, 2026 — Provider vs. Deployer Duties Explained

The transparency obligations under Article 50 of the EU AI Act apply from August 2, 2026: Articles 50(1) and 50(2) govern providers (informing users they are interacting with AI, machine-readable marking of synthetic content), while 50(3) and 50(4) govern deployers (informing people subject to emotion recognition, disclosing deepfakes). This article separates the two roles, walks through the exemptions and disclosure timing, and explains how Taiwanese companies should approach the question of where they sit.

#AI Act#EU AI Act#EU Regulations
17 min min read
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