# Claude Code burns about 15–20% of tokens on 3‑word status line

Digest AI · Agents & Tools · published 2026-10-29T03:33:42Z

Canonical: https://digestai.news/story/claude-code-burns-about-1520-of-tokens-on-3word-status-line

## Summary

Flamerix AI reports that Claude Code sends a background‑agent summary request roughly every 30 seconds. The request copies the entire transcript to the agent’s model (usually Opus) and returns a three‑to‑five‑word status line. Because the request is billed like any other Claude Code call, it can consume around 15–20% of a user’s token budget, reducing rate‑limit headroom.

Independent measurements collected by 86879 show an overhead of 18–26 %. The author’s own telemetry on version 2.1.301 recorded a weekly spend share that grew from 3.5–7 % in July to 7.3 % then 11.8 % the following week, reaching about 16 % by mid‑October. The cost is mostly cached reads, but the uncached 2–3 % of calls carry a third of the expense.

A workaround is provided via a Bun preload script (no‑agent‑summary.js) that intercepts the timer callback and disables the summary request. Installing the script through the BUNOPTIONS environment variable (or a wrapper) stops the extra calls without altering the binary, restoring normal token usage.

## Key points

- Claude Code sends a summary request every ~30 seconds, using the full transcript and costing ~15–20% of token budget.
- Independent measurements report 18–26% overhead; weekly spend share rose to ~16% by mid‑October.
- A Bun preload script (no‑agent‑summary.js) can suppress the timer, eliminating the extra token usage.

## Why it matters

The hidden token overhead cuts into rate‑limit headroom and raises costs for Claude Code users, especially in long‑running or background tasks, so removing it improves efficiency and budget predictability.

## Sources

1. [Claude Code burns ~15–20% of your tokens on a 3-word status line](https://gist.github.com/flamerix-ai/c3905705cc4205e5de3011fa2e74efce) (gist.github.com, 2026-10-29)

Part of the developing story: [Claude Code Token Efficiency Field Test](https://digestai.news/thread/claude-code-vs-cursor-field-test-shows-token-usage-differs) (2 stories)

## Cite

Digest AI, "Claude Code burns about 15–20% of tokens on 3‑word status line", 29 October 2026, https://digestai.news/story/claude-code-burns-about-1520-of-tokens-on-3word-status-line

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