Coding with AI

Assistants, reviews and costs.

Coding with AI

Prompt caching explained: how it cuts API bills, provider by provider

Prompt caching charges 2% to 25% of the normal input price for repeated prompt text. How it works, what each provider charges, and when cache writes pay off.

Oct 26, 20263 min read
Coding with AI

Free AI API tiers in 2026: what Gemini, OpenAI, DeepSeek and Mistral give for free

Which AI APIs can you use for free? Google's Gemini API has a free tier; OpenAI, DeepSeek and Mistral list none for text models. The details, and the cheapest paid options.

Oct 26, 20262 min read