Last refreshed: November 5, 2026 — this refresh applies the October 7 cache-read cut on Sonnet 5.5, corrects the $200 seat tier (now Ultra, not Max 20x), and adds Haiku 5.5.
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 | $0.10 |
| Batch | $1 / $5 | $1 / $5 |
One list price did move after launch: cache reads on Sonnet 5.5 were cut from $0.20 to $0.10 (0.05x base input) with the October 7, 2026 rate card — two days after this brief first published. 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 $100 (5x Pro). Ultra $200 (10x Pro weekly). 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. Haiku 5.5 (launched October 7, 2026) lists at $0.10 / $0.50 for prompts up to 100k tokens. 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.
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