Model pricing
Claude Sonnet 4.5 pricing — cost per million tokens
Claude Sonnet 4.5 costs $3.00 per million input tokens and $15.00 per million output tokens (USD). Requests over 200K tokens are billed at a premium tier for the whole request.
| Token rate | USD / 1M tokens |
|---|---|
| Effortqualitative reasoning depth | High |
| Inputper 1M tokens | $3.00 |
| Output | $15.00 |
| Cache write · 5-minute1.25× input | $3.75 |
| Cache write · 1-hour2× input | $6.00 |
| Cache read0.1× input | $0.30 |
| Input · >200K context | $6.00 |
| Output · >200K context | $22.50 |
Claude Code computes your real per-token cost from local session logs at these rates — no estimate, no upload.
Cache & context economics
Claude Sonnet 4.5 adds cache reads at $0.30 / 1M — about a tenth of input, cache writes at $3.75 (5-minute) or $6.00 (1-hour) / 1M, a >200K context tier that reprices the whole request.
Common questions
- How much does Claude Sonnet 4.5 cost per million tokens?
- $3.00 input and $15.00 output per million tokens (USD list price).
- What is the cache-read price for Claude Sonnet 4.5?
- $0.30 per million cached-read tokens — about a tenth of the input rate.
- How is cache writing priced for Claude Sonnet 4.5?
- A 5-minute cache write is $3.75 and a 1-hour write is $6.00 per million tokens — the split most trackers miss.
- Does Claude Sonnet 4.5 cost more above 200K context?
- Yes — above 200K tokens input rises to $6.00 per million for the entire request.
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