Here is what claude code said about claude code overages on my account when i prompted it to dig into the overage. tl;dr: i was getting billed for 2,206x actual usage. Cladue Fin agent refusing to credit back the overcharge. On 20X Max plan. ACTION: update cc cli and VS code extension to at least Claude Code CLI │ 2.1.90 Email sent to Antropic that was refused refund. US user. Hi Anthropic Support, I’m writing to request a usage credit for token inflation caused by the prompt cache bug publicly acknowledged by your team the week of March 31, 2026. Account: [ XXXXXX@XXX.XXX ](mailto: XXXXXX@XXX.XXX ) Plan: Claude Code Max 20x Affected window: March 31 – April 2, 2026 (current weekly billing period) Impact: ~20% of weekly budget consumed, primarily from inflated cache tokens
Evidence from my local session logs (~/.claude/projects/): Token type Count
Input tokens 227,640 Output tokens 2,178,819 Cache read tokens 1,506,539,247 ← inflated Cache creation tokens 65,368,503 ← inflated My meaningful work (input + output) totals ~2.4M tokens. My cache tokens total 1.57 billion — a 2,206x inflation ratio. This is consistent with the broken cache behavior described in your team’s public acknowledgement and GitHub issue #41249: attestation data varying per request breaks cache matching, causing full context re-billing every turn. Versions running during affected sessions: 2.1.83 and 2.1.87 — both prior to the fixes shipped in 2.1.84, 2.1.85, 2.1.86, and 2.1.89. My sessions also use ToolSearch extensively, which v2.1.84 specifically identified as breaking global system-prompt caching. I am now on v2.1.90 and expect normal cache behavior going forward. Given Anthropic’s public acknowledgement of this issue and the clear, quantified evidence of inflation in my session data, I’d appreciate a full or partial credit restoring the affected portion of this week’s budget. Happy to share raw session logs if helpful. Thanks, Davis submitted by /u/pladdypuss
Originally posted by u/pladdypuss on r/ClaudeCode