claude-code - 💡(How to fix) Fix [Bug] Sonnet 4.6 1M context unavailable for Max plan account [1 comments, 2 participants]

[{"error":"Error: EISDIR: illegal operation on a directory, read\n at readSync (unknown)\n at readSync (/$bunfs/root/src/entrypoints/cli.js:53:1553)\n at IdH (/$bunfs/root/src/entrypoints/cli.js:126:5400)\n at Db (/$bunfs/root/src/entrypoints/cli.js:127:181)\n at tL (/$bunfs/root/src/entrypoints/cli.js:129:54)\n at fp5 (/$bunfs/root/src/entrypoints/cli.js:8249:8932)\n at j (/$bunfs/root/src/entrypoints/cli.js:8249:8148)\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:8249:8479)\n at FP (/$bunfs/root/src/entrypoints/cli.js:477:63172)\n at S2H (/$bunfs/root/src/entrypoints/cli.js:477:76227)","timestamp":"2026-04-29T22:39:42.437Z"}]

TL;DR

The issue might be resolved by checking the account configuration or contacting support, as the error message suggests that Sonnet 4.6 with 1M context is not available for the account despite having a Max plan.

Guidance

• Verify that the Max plan ($200/month) indeed includes access to Sonnet 4.6 with 1M context by checking the official documentation: https://code.claude.com/docs/en/model-config#extended-context-with-1m
• Check if there are any account-specific restrictions or configuration issues that might be preventing access to the feature
• Compare the configuration and settings with colleagues who have successfully accessed Sonnet 4.6 with 1M context using the Max plan
• Consider reaching out to support for further assistance, as the error message does not provide a clear technical solution

Notes

The provided error message in JSON format does not seem directly related to the issue of accessing Sonnet 4.6 with 1M context, as it mentions an "EISDIR: illegal operation on a directory" error.

Recommendation

Apply workaround: Contact support for assistance, as the issue seems to be account-specific and not directly related to the code or configuration.