[FEATURE] Opus 4.8 (1M context) model option disappeared from the model picker

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• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Title: Opus 4.8 (1M context) model option disappeared from the model picker
after a Claude Desktop update — Max 20x plan

Summary

After updating the Claude Desktop app, the "Opus 4.8 (1M context)" entry is no
longer available in the model picker. It was present and working before the
update. Standard Opus 4.8 (200K) still works; only the 1M-context variant is gone.

Plan

Claude Max 20x (subscription).

Environment

• App: Claude Desktop for Windows (Microsoft Store / MSIX install)
• App version: 1.13576.0
• Bundled Claude Code: 2.1.177
• OS: Windows 11 Pro (10.0.22631)

What happened

1. Previously the model picker showed an "Opus 4.8 (1M context)" option, which

I used for my project.

1. After a Claude Desktop update, that entry disappeared.
2. I can still select standard Opus 4.8, and it works normally.

This is NOT a usage-limit issue

/usage shows plenty of quota remaining at the time the option is missing:

• 5-hour limit: 45% used
• Weekly (all models): 28% used
• Sonnet only: 31% used
• Usage credits: $4.84 of $100.00

Expected

The "Opus 4.8 (1M context)" option remains available on the Max 20x plan, as it
was before the update.

Actual

The 1M-context Opus 4.8 option is absent from the picker after the update.

Questions

1. Is the removal of the 1M-context Opus 4.8 option for Max subscription an

intended policy change, or a regression in app version 1.13576.0?

1. If intended: is 1M context for Opus 4.8 expected to remain available on the

Max plan at all, or is it now API/Bedrock/Vertex only?

1. If a regression: how can it be restored, and is a fix planned?

Proposed Solution

Don't know .

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_