default is opus and auto switches to sonnet when you run out of "opus quota", which usually is pretty bad. Answer from InvestigatorKey7553 on reddit.com
Apidog
apidog.com › blog › opus-4-5-claude-integration
How to use Claude 4.5 Opus with Cursor and Claude Code
1 month ago - By using Claude Opus 4.5, both Cursor and Claude Code can benefit from its deeper reasoning and memory — but which tool you choose depends on your workflow preferences. Switch models thoughtfully — Because Opus is powerful but more expensive, switch only when you need its reasoning strengths. Use planning mode in Claude Code — Have the agent plan out multi-step tasks before executing.
Reddit
reddit.com › r/claudeai › how use opus in claude code?
r/ClaudeAI on Reddit: How use opus in Claude Code?
May 27, 2025 -
I have a MAX subscription! but why can't I choose to have only opus model in the cloud code????
Top answer 1 of 5
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default is opus and auto switches to sonnet when you run out of "opus quota", which usually is pretty bad.
2 of 5
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I have a max five subscription, and I have the same exact option. I saw somewhere else people having the choice between opus and sonnet. Not sure why we have this simplified option
Videos
05:14
How to Get Claude Opus 4.5 FREE for Coding - YouTube
18:35
The EASIEST way to build iOS apps with Claude Code (Opus 4.5) - ...
19:42
Claude Code Opus 4.5 - Build Your First App! (Beginner's Guide) ...
24:45
The only Claude Code guide you'll ever need (Opus 4.5) - YouTube
21:07
NEW Claude Code Opus 4.5 Update (FREE!) - YouTube
28:47
BREAKING: New Claude Code Opus 4.5 Update! - YouTube
Vps-commander
vps-commander.com › blog › claude-opus-4-5-setup-2025
How to Set Up Claude Opus 4.5 & Claude Code - Step-by-Step Guide 2025
Please think deeply about edge cases before writing code." Watch the Thinking Blocks: Opus 4.5 will preserve its reasoning context. You can see it planning, checking files, and self-correcting. Approve Changes: Claude will present a diff. Press Enter to apply or R to reject/refine. Opus 4.5 has enhanced "Computer Use" capabilities. It can now inspect ...
DataCamp
datacamp.com › tutorial › claude-opus-4-claude-code
Claude Opus 4 with Claude Code: A Guide With Demo Project | DataCamp
May 23, 2025 - Claude Opus 4 has generated a detailed README.md file, including a project description, objectives, and implementation steps. Using the README file as a guide, we will ask Claude to create the folder structure, files, and initial codebase. Prompt: “Now, create folders and files and build ...
Claude
support.claude.com › en › articles › 12920969-applying-claude-opus-4-5-s-strengths-to-your-everyday-work
Applying Claude Opus 4.5’s strengths to your everyday work | Claude Help Center
Opus 4.5 picks up visual details that matter. Some projects unfold over many messages. You research, then analyze, then draft, then revise—each phase building on what came before. Previously, long conversations would hit context limits, forcing you to start over in a new chat or re-explain everything Claude should already know.
CometAPI
cometapi.com › how-to-use-claude-opus-4-5-via-cursor-and-claude-code
How to use Claude Opus 4.5 with Cursor and Claude Code — a in-depth guide - CometAPI - All AI Models in One API
2 weeks ago - Anthropic’s Claude Opus 4.5 is the company’s newest flagship model focused on coding, agentic workflows, and advanced “computer use.” This article explains what Opus 4.5 is, how it performs on public benchmarks, and — step by step — how to use it inside two developer-focused surfaces: Cursor (an AI-powered IDE) and Claude Code (Anthropic’s command-line agentic coding tool).
Reddit
reddit.com › r/claudeai › claude opus 4.5 is now available in claude code for pro users
r/ClaudeAI on Reddit: Claude Opus 4.5 is now available in Claude Code for Pro users
3 weeks ago -
Claude Opus 4.5, our frontier coding model, is now available in Claude Code for Pro users. Pro users can select Opus 4.5 using the /model command in their terminal.
Opus 4.5 will consume rate limits faster than Sonnet 4.5. We recommend using Opus for your most complex tasks and using Sonnet for simpler tasks.
To get started:
* Run claude update
* /model opus
Anthropic
anthropic.com › claude › opus
Claude Opus 4.5
Claude Opus 4 pushes the frontier in coding, agentic search, and creative writing. We’ve also made it possible to run Claude Code in the background, enabling developers to assign long-running coding tasks for Opus to handle independently.
The New Stack
thenewstack.io › home › claude opus 4 with claude code: a developer walkthrough
Claude Opus 4 With Claude Code: A Developer Walkthrough - The New Stack
May 31, 2025 - Claude Opus 4 has already grabbed quite a bit of attention in the short time it has been public, and in some ways I feel I’m a little slow to the party. I was reading a very detailed breakdown that Federico Viticci did using Claude 4 on the web to sort through his emails. I know he likes detail, but I was slightly worried about the 200-line prompt file he was maintaining. (I later understood that Claude writes a lot of notes into its own file.)
Claude
support.claude.com › en › articles › 11145838-using-claude-code-with-your-pro-or-max-plan
Using Claude Code with your Pro or Max plan | Claude Help Center
Model access: Max plan subscribers can use Sonnet or Opus 4.5 on Claude Code (switch between them using the /model command). Best for: Everyday use with larger codebases, or power users.
Reddit
reddit.com › r/claudeai › claude pro user - claude code can't use opus 4.5?
r/ClaudeAI on Reddit: Claude Pro user - Claude Code can't use Opus 4.5?
1 month ago -
When I try to switch /model
I get this message "Want Opus 4.5? Run /upgrade to get the Max plan or /extra-usage to turn on extra usage"
and only the option to pick from 1. Sonnet and 2. Haiku
Top answer 1 of 22
43
Yeah, no Opus 4.5 for Pro users in Claude Code. Also, no changes in limits. I'm disapointed.
2 of 22
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Pro user here. I can access Opus 4.5 in the standard Claude (non-code) Web UI, but not in Claude Code CLI. Seems strange, especially as the Opus usage chart has disappeared and been rolled-in to the standard limits according to my Usage page, and others report Opus 4.5 being lighter and cheaper.
Mckaywrigley
mckaywrigley.com › posts › opus-4.5
My Thoughts on Claude Opus 4.5
A useful starting point is to have a chatroom.md file that a team of agents can use to communicate and collaborate in. If you really want to get crazy with swarms, then you'll find hooks in the Claude Agent SDK to be essential. Claude Code + Opus 4.5 is the best AI coding tool in the world.
Reddit
reddit.com › r/claudeai › claude opus 4.5
r/ClaudeAI on Reddit: Claude Opus 4.5
November 24, 2025 -
https://www.anthropic.com/news/claude-opus-4-5
Reddit
reddit.com › r/claudeai › workaround: opus 4.5 not available yet in your claude code instance?
r/ClaudeAI on Reddit: Workaround: Opus 4.5 not available yet in your Claude Code instance?
1 month ago -
just type:
/model claude-opus-4-5-20251101
Top answer 1 of 9
5
on the pro plan, just updated and seeing this: " /model claude-opus-4-5-20251101 ⎿ Your Pro plan doesn't include Opus in Claude Code. Turn on /extra-usage or /upgrade to Max to access it." RIP
2 of 9
5
Same here. No Opus 4.5 for us peasants on Pro plan. And of course it's nowhere mentioned.
Weights & Biases
wandb.ai › wandb › genai-research › reports › Tutorial-Coding-with-Claude-Opus-4-1--VmlldzoxMzg3NDE2Mw
Tutorial: Coding with Claude Opus 4.1 | genai-research
2 weeks ago - Weights & Biases, developer tools for machine learning
Anthropic
anthropic.com › news › claude-opus-4-5
Introducing Claude Opus 4.5
Early testing shows it surpasses internal coding benchmarks while cutting token usage in half, and is especially well-suited for tasks like code migration and code refactoring. Claude Opus 4.5 beats Sonnet 4.5 and competition on our internal benchmarks, using fewer tokens to solve the same problems.