Anthropic API Performance Regression in Claude Opus 4.1 Impacting Code Understanding

Bug Description
Opus 4.1 is at the same level of degradation as Sonnet 4, which makes work more frustrating than before and doesn't understand anything. How can this happen? I

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 1.0.88
• Feedback ID: d7e338a7-8b88-43d2-9d63-223fa52dcc8c

Errors

[{"error":"Error: {\"error\":{\"name\":\"Error\",\"message\":\"Failed to run sql query: ERROR:  42703: column u.quick_count does not exist\\nLINE 4:     u.quick_count,\\n            ^\\n\"}}\n    at C2B (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:12047)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:6785)\n    at async aN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:10481)\n    at async BgB (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:6800)\n    at async iN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5778)\n    at async lN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5407)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:2906)\n    at async e1 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3434:3196)\n    at async u1 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3434:4113)","timestamp":"2025-08-22T07:57:10.942Z"},{"error":"Error: {\"error\":{\"name\":\"Error\",\"message\":\"Failed to run sql query: ERROR:  42703: column e.intent does not exist\\nLINE 5:     e.intent,\\n            ^\\n\"}}\n    at C2B (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:12047)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:6785)\n    at async aN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:10481)\n    at async BgB (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:6800)\n    at async iN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5778)\n    at async lN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5407)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:2906)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:3672)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:3672)","timestamp":"2025-08-22T07:57:34.457Z"},{"error":"Error: {\"error\":{\"name\":\"Error\",\"message\":\"Failed to run sql query: ERROR:  42P01: relation \\\"usage_reservations\\\" does not exist\\nLINE 4: FROM usage_reservations r\\n             ^\\n\"}}\n    at C2B (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:12047)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:6785)\n    at async aN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:10481)\n    at async BgB (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:6800)\n    at async iN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5778)\n    at async lN5 (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:5407)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:2906)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:3672)\n    at async VE (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:3401:3672)","timestamp":"2025-08-22T07:58:36.221Z"},{"error":"Error: {\"error\":{\"name\":\"Error\",\"message\":\"Failed to run sql query: ERROR:  42501: permission denied for function has_pro_access\\n\"}}\n    at C2B (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:12047)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/mibook/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1863:6785)\n    at async aN5 (file:///Users/mibook/.npm-global/lib/node

Note: Error logs were truncated.