Claude Opus 5: Pricing, Specs, and What Changed
Claude Opus 5 is here: model ID claude-opus-5, $5/$25 per million tokens, 1M context, and thinking on by default. What shipped and what breaks migrating from Opus 4.8.
Claude Opus 5 is here: model ID claude-opus-5, $5/$25 per million tokens, 1M context, and thinking on by default. What shipped and what breaks migrating from Opus 4.8.
How to change model in Claude Code: type /model to switch between Opus, Sonnet, and Haiku instantly, or set a permanent default with --model.
Sonnet delivers 97–99% of Opus's coding ability at roughly 40% of the price. Here's the benchmark data, the pricing math, and a simple decision framework.
A plain-English history of every Claude Opus version, from Claude 3 Opus to the Opus 4.8 flagship — what each release changed, and how to find the latest.
Every Claude model in one place: Opus 4.8, Sonnet 5, and Haiku 4.5 compared on price, context, and use case — plus how to decode Anthropic's version names.