Claude Inline Tools Beta: What Actually Ships (2026)
September 28, 2026
Claude's inline tools beta adds tools mid-conversation without busting the prompt cache. I traced exactly when each SDK shipped it, wire format included.
#prompt-caching
DeepSeek Harness: Free Agent Loop, Costlier Tokens 2026
August 19, 2026
DeepSeek open-sourced its agent harness under MIT and it passed 161,000 GitHub stars in six days, then raised API prices right where agent loops hurt most.
Claude Prompt Caching in TypeScript: Cut Costs 2026
June 15, 2026
Add Claude prompt caching in TypeScript with cache_control: measure cache_read_input_tokens, cut API costs ~89%, and avoid the silent minimum-token cache miss.