[BUG] Max X5 Usage Instantly Reaches 100% After Software Update

I have same problem, this is summary:
Summary: Phantom usage draining Max plan quota with no activity logs, persisting across logout/restart
Details:
I'm on the Claude Max plan, using Claude Code via the VS Code extension. Since the Fable 5 rollout, I've experienced continuous usage drain with no corresponding activity:
Session and weekly usage meters (All models, Fable) have climbed steadily despite no active use.
I fully logged out of all devices/surfaces (Claude Code, VS Code extension, Claude Desktop, mobile), removed all connected tokens, disabled Claude in Chrome, and restarted my computer entirely (powered off).
Usage continued increasing — most recently drained a full 5-hour session window in ~15 minutes with the laptop powered off and everything disconnected.
My usage dashboard shows no activity log entries corresponding to this usage.
Usage credits toggle is OFF, yet credits were consumed at one point during the initial incident.
Issue has persisted across multiple 5-hour session windows and a weekly reset.
Expected behavior: Usage should only reflect actual activity, and activity logs should show what's consuming quota.
Actual behavior: Usage climbs with zero visible activity and no way to trace the source.
Environment: Claude Max plan, Claude Code (VS Code extension) — no Console/API access.

Unfortunately, it seems that Anthropics is a company that doesn't care about its customers—to the point where they don't even have a support email address.

Yes, this is causing financial loss to paying customers. We paid for the service, yet we're unable to use what we've paid for. It's incredibly disappointing and unacceptable.

I can confirm I am experiencing exactly the same issue.

My Claude Max usage continues increasing while I am completely idle.

The 5-hour limit resets normally, but then starts increasing again without sending any prompts or using Claude Code. My weekly usage is also being consumed automatically.

I investigated extensively:

• No active Claude sessions
• claude agents --json --all shows no long-running sessions
• /usage reports 8+ hour subagent-heavy sessions
• Current session shows zero token usage
• Windows Task Manager shows no abnormal CPU or network activity

I also contacted AI support, but it could not verify any server-side sessions and suggested this requires investigation of backend logs.

This appears to be a server-side usage accounting or cloud session lifecycle issue rather than a local configuration problem.

Can confirm.

Adding related Billing Platform / cost-control context from a separate unresolved paid Claude billing case, kept public-safe.

This thread is important because it reports paid Max usage being consumed while the account appears idle, with no corresponding visible activity log and multiple users describing the same "phantom usage" shape. Related public reports in the same Anthropic-owned tracker include:

• usage leak / paid 20x plan not reconciled with actual activity: https://github.com/anthropics/claude-code/issues/80705
• abnormal restart / tool-loop / context-reload allocation drain: https://github.com/anthropics/claude-code/issues/81359
• weekly usage meter / reset-boundary mismatch: https://github.com/anthropics/claude-code/issues/81366

My direct case is a different billing surface: manual prepaid / bulk Claude usage-credit purchases fail or fail to commit cleanly, while automatic usage-credit reloads on the same paid billing setup continue charging successfully. The useful shared boundary is that paid account state, usage-credit / quota state, visible activity logs, auto-reload/payment events, and support routing do not reconcile cleanly.

Requested triage path: please route this class of reports to a human Billing Platform / cost-control / agent-runtime owner who can inspect server-side session lifecycle, account activity logs, token attribution, quota/credit debits, auto-reload triggers, phantom or orphaned work, and credit/cap restoration policy together. Generic client-side logout/reinstall/card-decline guidance cannot diagnose an account whose usage moves while the user sees no matching activity.

Concrete asks that would help paid users:

• per-session and per-surface usage attribution visible to the customer;
• a server-side "revoke/stop all active sessions and agents" control with proof that nothing remains running;
• mismatch alerts when quota moves but no user-visible activity entry exists;
• a written credit/cap restoration path for confirmed phantom usage or product/runtime loops;
• a support route that reaches a human Billing Platform / payment-operations owner instead of Fin loops.

Public, privacy-sanitized evidence hub for the broader manual-credit, auto-reload, entitlement-routing, quota-meter, and support-routing pattern:
https://coolak.github.io/anthropic-claude-billing-incident/

Billing reconciliation matrix / owner map:
https://coolak.github.io/anthropic-claude-billing-incident/reconciliation-matrix.html

I am intentionally not posting card details, bank names, private payment IDs, invoice IDs, support IDs, raw logs, screenshots, payment URLs, one-time codes, private support-thread text, tokens, or private account identifiers here.

I've had a similar experience in the last ~6 hours where my usage drained to 100% although i had only 5% of my session utilisation and had barely started using the weeks allocation.

Same here https://github.com/anthropics/claude-code/issues/81684

And technical support isn't responding!
It's outrageous to pay so much for a service and get no support.