Question 1

What makes Claude Opus 4.8 the smartest?

Accepted Answer

Claude Opus 4.8 (Anthropic, May 2026) is Anthropic's latest and most capable model, leading on multi-step reasoning, long-form writing, code, and complex tool use. It's the best choice for research-heavy and high-stakes creative projects.

Question 2

Claude Opus 4.8 vs Opus 4.7 — which should I use?

Accepted Answer

Opus 4.8 is the newer, more capable flagship — use it for the most demanding tasks. Opus 4.7 is still highly capable and can be a better cost-to-capability trade for many projects.

Question 3

How do I pick Opus 4.8 inside Tab?

Accepted Answer

Open the agent model picker at the bottom of the prompt bar on the homepage and select Opus 4.8. Your choice persists per chat so you can mix models across different projects.

Tab | Claude Opus 4.8 — Smartest Agent Model