Model pricing
Claude Opus 5.5 pricing — cost per million tokens
Claude Opus 5.5 costs $4.00 per million input tokens and $20.00 per million output tokens (USD). It uses the newer tokenizer, which emits ~30% more tokens for the same text.
| Token rate | USD / 1M tokens |
|---|---|
| Effortqualitative reasoning depth | High |
| Inputper 1M tokens | $4.00 |
| Output | $20.00 |
| Cache write · 5-minute1.25× input | $5.00 |
| Cache write · 1-hour2× input | $8.00 |
| Cache read0.1× input | $0.20 |
Claude Code computes your real per-token cost from local session logs at these rates — no estimate, no upload.
Cache & context economics
Claude Opus 5.5 adds cache reads at $0.20 / 1M — about 5% of input, cache writes at $5.00 (5-minute) or $8.00 (1-hour) / 1M.
Common questions
- How much does Claude Opus 5.5 cost per million tokens?
- $4.00 input and $20.00 output per million tokens (USD list price).
- What is the cache-read price for Claude Opus 5.5?
- $0.20 per million cached-read tokens — about 5% of the input rate.
- How is cache writing priced for Claude Opus 5.5?
- A 5-minute cache write is $5.00 and a 1-hour write is $8.00 per million tokens — the split most trackers miss.
Track your real cost with JP the Cat
A live menu-bar total, priced to the cent from your local logs — including the cache-write split most tools miss.
Download MeowPrefer Homebrew? Install the same signed, notarized app from JP's public tap.
brew tap 8bittts/jpthecat
brew trust 8bittts/jpthecat
brew install --cask jpthecat