Last refreshed: October 5, 2026
Anthropic launched Claude Sonnet 5.5 on September 28, 2026. Seat prices on claude.com did not move. The operator event is a new SKU, not a unit-price cut: Sonnet 5.5 lists at $2 per million input tokens and $10 per million output tokens — the same pair as Sonnet 5.
Official sources: anthropic.com/claude-sonnet-5-5, platform.claude.com pricing, September 28 rate card, claude.com/pricing.
What changed
Sonnet 5.5 is a new SKU, not a rename of Sonnet 5. Anthropic says it runs 30%+ faster than Sonnet 5 and costs up to 30% less per task because it uses fewer tokens, not because the published rate fell.
| Sonnet 5 | Sonnet 5.5 | |
|---|---|---|
| Input / MTok | $2 | $2 |
| Output / MTok | $10 | $10 |
| 5-minute cache write | $2.50 | $2.50 |
| 1-hour cache write | $4 | $4 |
| Cache read | $0.20 | $0.20 |
| Batch | $1 / $5 | $1 / $5 |
Do not treat “30% less per task” as a 30% list-price cut. The meter is still $2 / $10. US-only inference stays 1.1x on Claude 4.6 and later models.
What did not change
Free $0. Pro $20 monthly / $17 annual. Max from $100 (5x) and $200 (20x). Team Standard $20 annual / $25 monthly per seat. Team Premium $100 annual / $125 monthly. Enterprise $20/seat plus usage at API rates. Opus 5.5 remains $4 / $20. Haiku 4.5 remains $1 / $5. Fable 5.1 remains $10 / $50 with $0.25 cache reads. Cursor Individual stays $20; Cursor Teams stays $40/user on cursor.com/pricing.
Operator note
If you are pinned to claude-sonnet-5, you are still on the $2 / $10 meter. Switch to claude-sonnet-5-5 if the workload can move and you want the newer model. Cursor on-demand that routes to Anthropic list will pick up the new SKU when Cursor exposes it — Cursor seat prices did not move with this launch.
Live desks: API rates · seat tiers · Claude Code vs Cursor.
Get The Signal
What we actually ran, what it measured, and what it means for a restoration shop — every week, including the flops.
Leave a Reply