Illustration of a developer sitting at a desk, focused on a laptop displaying lines of code. The background features dynamic flowing lines suggesting speed and data movement. Text overlay reads “Claude Haiku 4.5 Explained: Fast, Cheap, & Built for Coding.” The overall color scheme is blue with yellow and white typography, creating a modern tech aesthetic.
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Haiku 4.5 on GitHub Copilot: Code Faster, Spend Less

Imagine your AI coding assistant responding the instant you finish typing. No more lag, no more waiting—just seamless, real-time help that feels like a natural extension of your thoughts. That’s the promise of Anthropic’s new Claude Haiku 4.5, now Generally Available (GA) in GitHub Copilot. It’s not just another update; it’s a fundamental shift in developer experience. Anthropic positions Claude Haiku 4.5 as delivering near-Sonnet 4 coding performance at one-third the price and more than twice the speed; a partner quote on Anthropic’s launch page cites ‘up to 4–5× faster than Sonnet 4.5.’ But is it powerful enough for your daily work? How much cheaper is it really inside Copilot? […]