claude-code - 💡(How to fix) Fix C:/Program Files/Git/model opus sets 200k context window instead of 1M on Max plan [1 comments, 2 participants]

TL;DR

The issue can be worked around by using the /model command without arguments to select the default Opus 4.6 model, which correctly sets the context window to 1M tokens.

Guidance

• Verify that the issue is specific to the opus alias by comparing the behavior with the default model selection using /model.
• Check the settings.json file to ensure that the "model" setting is not overriding the context window size.
• Test the opusplan alias to see if it also exhibits the same behavior, and if switching back to opus changes the context window size.
• Consider using the default model selection method (/model) instead of the opus alias to ensure the correct context window size.

Example

No code snippet is provided as the issue does not require a code-level fix.

Notes

The issue seems to be specific to the opus alias and the settings.json file. The workaround provided should resolve the issue, but the root cause of the problem may require further investigation.

Recommendation

Apply workaround: Using the /model command without arguments to select the default Opus 4.6 model is a reliable way to ensure the correct context window size of 1M tokens.