First Claude 5.5 model, near Fable 5.1 level for agentic coding and knowledge work at $4/$20.
Released
Sep 22, 2026
Context window
1M tokens
Max output
128K tokens
Parameters
Not disclosed
Input price
$4.00 per 1M
Output price
$20.00 per 1M
Prices are first-party list prices in USD at the standard tier. Last verified Oct 30, 2026.
Pricing
Launch priceSep 22, 2026
$4.00 in / $20.00 out
Current price
since Sep 22, 2026
$4.00 in / $20.00 out
Cached input $0.20 per 1M
| Tier | Effective | Input | Output | Cached |
|---|---|---|---|---|
| Standard | Sep 22, 2026 – now | $4.00 | $20.00 | $0.20 |
| Batch | Sep 22, 2026 – now | $2.00 | $10.00 | - |