Anthropic has just released Claude Opus 4.8, the latest evolution of its most powerful model and it's already available on RELPZ. Starting today, you can use Opus 4.8 in your assistants to take advantage of significant improvements in coding, agentic tasks, reasoning, and real-world knowledge work.

What's New in Claude Opus 4.8

Claude Opus 4.8 builds on Opus 4.7 with meaningful improvements across the board:

  • Coding & Agentic Skills: Early testers report that Opus 4.8 is more reliable and sharper in judgment when performing agentic tasks. It asks the right questions, catches its own mistakes, and pushes back when a plan isn't sound.
  • Honesty & Reliability: Opus 4.8 is approximately four times less likely than its predecessor to allow flaws in code it has written to pass unremarked. It proactively flags uncertainties about its work.
  • Same Price: Opus 4.8 is available at the same price as Opus 4.7, delivering more capability at no additional cost.

How to Use Opus 4.8 on RELPZ

Getting started with Claude Opus 4.8 on RELPZ is simple:

  1. Go to your assistant settings on RELPZ.
  2. In language model, select Claude Opus 4.8.
  3. Save your settings and you're ready to go!
Selecting Claude Opus 4.8 in assistant settings

Your assistant will now use Opus 4.8's enhanced capabilities for every interaction, delivering better reasoning, more reliable code, and more honest, thoughtful responses.