Opus Model Unexpectedly Fallback to Sonnet During Code Generation

Bug Description
Today Opus didn't work at all, 2 lines of code and switched to sonnet, I Didn't use neither the claude app or browser just to make sure that I have for coding, what is happening?!?!?

Environment Info

• Platform: macos
• Terminal: vscode
• Version: 1.0.16
• Feedback ID: 42bddbec-f96d-492c-96f5-03fef15bfd67

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at WZ (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:654:3921)\n    at file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:11794\n    at Q (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:17190)\n    at pJ (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10940)\n    at iP (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10021)\n    at n6 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:14133)","timestamp":"2025-06-06T19:01:18.747Z"},{"error":"ShellError: Shell command failed\n    at Object.call (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1573:1326)\n    at async nZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:19170)\n    at async JK1 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:17756)\n    at async lZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16798)\n    at async pZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16427)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:15456)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)","timestamp":"2025-06-06T19:11:38.324Z"},{"error":"ShellError: Shell command failed\n    at Object.call (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1573:1326)\n    at async nZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:19170)\n    at async JK1 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:17756)\n    at async lZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16798)\n    at async pZ5 (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16427)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:15456)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)\n    at async UO (file:///Users/user/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1896:16282)","timestamp":"2025-06-06T19:12:06.902Z"}]