AI Security
What a ChatGPT plan buys compared with OpenAI API prices
OpenAI publishes plan prices and estimated message counts, not token caps. Here is what its pages say and how it compares with API list prices.
Oct 18, 20264 min read
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Gemini and Mistral plans compared with their API prices
Google and Mistral publish consumer plan prices and API token prices on separate pages. Here is how they line up, what each vendor does not publish, and the dated price changes Google lists.
Oct 18, 20265 min read
AI Security
How to estimate what one AI chat or agent session costs
A method and a runnable calculator for pricing one chat or coding agent session in tokens, including context growth and prompt caching, with list prices fetched on 18 October 2026.
Oct 18, 20267 min read
AI Security
Why agent sessions cost more than chat, and how caching fits
Agents re-read a growing context on every tool call. Here is what that does to token bills and what Anthropic, OpenAI and Google publish about prompt caching prices.
Oct 18, 20263 min read
AI Security
What public reporting says about AI inference economics
Providers do not publish what inference costs them. Here are the figures press and analysts have reported in 2026, each attributed and dated, and why they do not agree.
Oct 18, 20264 min read
AI Security
Team and enterprise AI plans compared with the API
What changes when you move from an individual plan to a team plan, an enterprise plan or the API: seat prices, usage billing, admin controls and data terms, from the vendors' own pages.
Oct 18, 20264 min read
AI Security
Subscription, API or enterprise: which is cheaper for a small team
A decision guide with a worked example for a five person team, using published seat prices and API list prices, and one rule that tells you when a seat beats paying per token.
Oct 18, 20266 min read
AI Security
Fine-tuning models with Safeguard: provenance, lineage and trust
You can fine-tune models with Safeguard. Why a fine-tune needs a record of its base model, data and settings, and how that record protects you.
Oct 18, 20263 min read
AI Security
Build your own small language model from Safeguard search
Safeguard search can seed a small language model of your own, one that runs on your hardware and knows your estate. Why a tiny model is worth having.
Oct 18, 20263 min read
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