---
title: Try Claude Opus 4.5 With Us
link: https://ampcode.com/news/try-opus
source: ampcode-com
published: 2025-11-24T00:00:00Z
updated: 2025-11-24T00:00:00Z
first_seen: 2026-10-03T23:09:50.514863041Z
summary: 'Anthropic just released Claude Opus 4.5. We''ve been testing it, right on the heels of the Gemini 3 release, and have been very, very impressed. Exciting times! We''re eager to figure out where and how it can fit into Amp. As the main agent? As the oracle? As another subagent? There''s a lot to explore. But one learning from the Gemini 3 launch is that early-access performance might not be indicative of final production performance. So we want to be careful and evaluate it properly. And, while cheaper than Opus 4.1, it is still more expensive than Gemini or Claude Sonnet 4.5. What we want to figure out now: can we make that worth it for you? So, for a limited time, you can try Claude Opus 4.5 as the main agent in smart mode in Amp along with us: CLI: amp --try-opus or add "amp.tryOpus": true to ~/.config/amp/settings.json Editor extension: Click Try Opus 4.5 in the Amp settings Let us know what you think.'
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---

Anthropic just released Claude Opus 4.5. We've been testing it, right on the heels of the Gemini 3 release, and have been very, very impressed. Exciting times!

We're eager to figure out where and how it can fit into Amp. As the main agent? As the oracle? As another subagent? There's a lot to explore.

But one learning from the [Gemini 3 launch](https://ampcode.com/news/gemini-3) is that early-access performance might not be indicative of final production performance. So we want to be careful and evaluate it properly.

And, while cheaper than Opus 4.1, it is still more expensive than Gemini or Claude Sonnet 4.5. What we want to figure out now: can we make that worth it for you?

So, for a limited time, you can try Claude Opus 4.5 as the main agent in `smart` mode in Amp along with us:

- **CLI**: `amp --try-opus` or add `"amp.tryOpus": true` to `~/.config/amp/settings.json`
- **Editor extension**: Click `Try Opus 4.5` in the Amp settings

Let us know what you think.