EXCESSIVE consumption

Preflight Checklist

• [x] I have searched existing issues for similar behavior reports
• [x] This report does NOT contain sensitive information (API keys, passwords, etc.)

Type of Behavior Issue

Other unexpected behavior

What You Asked Claude to Do

This applies to any instruction, no matter how simple it is.

What Claude Actually Did

I’m going to explain the issue here: as the title suggests, the model is exhibiting unexpected and absurdly excessive consumption. This has happened to me with both Fable 5 and Opus 4.8; for every 500 tokens, it consumes roughly 2% to 4% of my total current session usage. To give you an idea, I ran a /compact command in two sessions, and usage shot up to 71%. It is simply unreasonable—there is no logical explanation for it—and it is directly affecting me by preventing me from making the most of the final days of the Fable 5 model to finish key implementations on private and personal projects.

Expected Behavior

The behavior is fine; I just expect much less aggressive token consumption—it's absolutely insane.

Files Affected

Permission Mode

Accept Edits was ON (auto-accepting changes)

Can You Reproduce This?

Yes, every time with the same prompt

Steps to Reproduce

_No response_

Claude Model

Opus

Relevant Conversation

Impact

Low - Minor inconvenience

Claude Code Version

2.1.204

Platform

Anthropic API

Additional Context

_No response_