Opus 4.8 not selectable in CLI `/model` despite being available on account

[uplinkdgroup]

CLI version: 2.1.156 (latest, confirmed via claude update)
Platform: macOS (Darwin 25.4.0), zsh

Expected

/model picker lists Opus 4.8 and Opus 4.8 (1M context), matching what's available on the same Anthropic account in the claude.ai web app.

Actual

/model only offers up to Opus 4.7 (1M context) as the top option. Selecting 4.7 is the only path to a 4.x Opus on the CLI.

Evidence

• claude.ai web app model picker (same account) shows: Opus 4.8, Opus 4.8 (1M context), Sonnet 4.6, Haiku 4.5
• CLI /model shows: Opus 4.7, Opus 4.7 (1M context), Sonnet 4.6, Haiku 4.5
• claude update reports "Claude Code is up to date (2.1.156)"

Impact

Cannot use the latest Opus model from the CLI even though the account is entitled to it on the web app.

Ask

Either ship a CLI update that surfaces 4.8, or clarify whether 4.8 requires a different release channel / config flag / env var to appear in /model.

[williamgunn]

Seeing the same thing.

MacOS

claude --version --verbose

2.1.156 (Claude Code)
Commit: de3d672b5e8c35ae78d81c9dd83844d334ec63af

/model claude-opus-4-8

Set model to Opus 4

[jonathlan]

Same here, I cannot access it from the CLI, but it's selectable in the desktop app

[nx-dennytrebbin]

Same here.

/model claude-opus-4-8 sets the model to custom model with 200k context window.

[nx-dennytrebbin]

Update

I use mise to manage binary versions. There were two files specifying claude@2.1.153 and claude@2.1.156. Apperently, mise picked the .toml file which specified the older version.

Now with claude being at 2.1.156 I can see the 1M Opus 4.8 model.

[juliushuck]

For me it was brew install --cask claude-code@latest

[williamgunn]

Ran claude update and it works for me in v2.1.157

[ctsstc]

I've got the CLI installed through brew and mine is at v2.1.148 it doesn't show there's any available update :\
I thought the available models were supposed to come in dynamically (I've seen where it varies between personal vs corporate/team accounts) 🤔

Edit: I guess I'll swap my cask over even though I prefer to be on the slower release channel, but you can't have both 🔥

[uplinkdgroup]

Auto upgrade kicked in and it's working for me now.

If still struggling try running: /doctor from the CLI

Once upgraded I've noticed the 'ultracode' feature in /effort - time to give that a spin.

Good luck.

[dikaio]

Curious what effort level others are using. I run Codex on xhigh fast and have been really happy with the results. With Claude Code 4.7, though, I haven't found an effort level that consistently works well for everyday coding, hoping that change is here in 4.8.

[facumartig]

I've got the CLI installed through brew and mine is at v2.1.148 it doesn't show there's any available update :\ I thought the available models were supposed to come in dynamically (I've seen where it varies between personal vs corporate/team accounts) 🤔

Edit: I guess I'll swap my cask over even though I prefer to be on the slower release channel, but you can't have both 🔥

@ctsstc Did you tried doing brew upgrade claude-code@latest?
https://code.claude.com/docs/en/setup#configure-release-channel

[birdybro]

claude --update worked for me. It didn't show an available update, but it just worked right after that when i launched claude code from cli.