[Bug] Anthropic API Error: Long context beta unavailable for subscription

Bug Description
I've used the long context for months and paid $1000s in extra usage a month. Now I'm suddenly no longer part of the beta?
"The long context beta is not yet available for this subscription."

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.50
• Feedback ID: 0a11c3da-20f2-4093-9f5f-0cb32805e8a0

Errors

[{"error":"Error: Failed to delete keychain entry\n    at eUB (/$bunfs/root/claude:2601:6910)\n    at async nRD (/$bunfs/root/claude:6103:685)\n    at async lzA (/$bunfs/root/claude:6103:589)\n    at async qET (/$bunfs/root/claude:2111:2222)\n    at async startOAuthFlow (/$bunfs/root/claude:2111:3618)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-23T17:35:21.071Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"The long context beta is not yet available for this subscription.\"},\"request_id\":\"req_011CYRQQsnvyf9byWaMbKuVd\"}\n    at generate (/$bunfs/root/claude:262:28230)\n    at makeRequest (/$bunfs/root/claude:301:5435)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-23T17:35:28.360Z"}]