Question 1

What is Claude Opus 5 best at?

Accepted Answer

Claude Opus 5 (Anthropic, July 2026) is the newest Opus-tier model, built for complex agentic coding and enterprise work. It reasons adaptively by default, verifies its own work, and handles long multi-step projects — in Tab it powers Agent mode across video, image, voice, and music skills.

Question 2

Claude Opus 5 vs Opus 4.8 — which should I use?

Accepted Answer

Opus 5 is the newer flagship at the same per-token price ($5 / $25 per MTok), so it's the default pick for demanding work. Opus 4.8 remains available if you prefer the prior generation's behavior. You can switch per chat in Tab and compare both on the same brief.

Question 3

How much does Claude Opus 5 cost in Tab?

Accepted Answer

Claude Opus 5 bills at the same rate as Opus 4.8: 50 credits per million input tokens (5 cached) and 250 credits per million output tokens — $5 in / $25 out per MTok. Usage draws from your plan's credit pool like every other agent model.

Question 4

How do I use Claude Opus 5 in Tab?

Accepted Answer

Open the agent model picker at the bottom of the prompt bar on the homepage and select Opus 5. Your choice persists per chat, so you can run Opus 5 on one project and Sonnet, Fable, GPT, Gemini, GLM, or Kimi on another.

Tab | Claude Opus 5 — Anthropic's Newest Opus Agent Model