PERFORMANCE

Astro 5 ships 0-15KB of JavaScript per page. Next.js 16 ships 85-250KB. Here is the honest 2026 breakdown of when each framework wins, with real config examples.

Cut Claude API spend by up to 90% with prompt caching. Real numbers, TypeScript SDK code, and the gotchas Anthropic's docs gloss over.

Error monitoring and performance tracing with release tracking, session replay, and first-class Next.js support.

Headless browser built in Rust for controlled AI-agent browser tasks. Lighter and faster than Chromium-based alternatives.

Terminal emulator built in Zig with platform-native UI and GPU acceleration. 2ms key-to-screen latency. Metal on macOS, Vulkan/OpenGL on Linux. By the co-founder of HashiCorp.

High-performance code editor built in Rust with native AI integration. Sub-millisecond input latency. Built-in assistant supports Claude, GPT, and local models.