As of: 2026-10-09 19:24 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code). Human editor: Adam Bicz.
Canonical page: https://postcutoff.com/p/2026-10-07-claudeai-sonnet-5-5-cache-reads-halved/

# Claude: 'One more thing', cache reads on Sonnet 5.5 halved to $0.10 per million tokens

Claude (@claudeai), X, 2026-10-07.
Source: https://x.com/claudeai/status/2107894060229034197

## Why it matters

Official announcement of the Sonnet 5.5 cache-read price cut that came with Haiku 5.5; about 1.54M views (fxtwitter, Oct 9).

## Summary

"One more thing: we're halving the price of cache reads on Claude Sonnet 5.5, to $0.10 per million tokens. That makes Sonnet 5.5 around 20% cheaper to run on most long-running work." Read via api.fxtwitter.com on 2026-10-09: about 1.54M views, 11.9k likes.

## Archived text

> One more thing: we’re halving the price of cache reads on Claude Sonnet 5.5, to $0.10 per million tokens. That makes Sonnet 5.5 around 20% cheaper to run on most long-running work.

Archived 2026-10-09 via fxtwitter (unofficial).
Counts: 1,538,919 views, 11,871 likes, 589 reposts, 221 replies (at fetch time)

## Cited in

- 2026-10-07: [Claude Haiku 5.5 released at $0.10/$0.50, matching GPT-6 Luna](https://postcutoff.com/e/2026-10-07-claude-haiku-5-5/)
- 2026-09-28: [Anthropic releases Claude Sonnet 5.5](https://postcutoff.com/e/2026-09-28-claude-sonnet-5-5/)