Last refreshed: September 24, 2026
Anthropic launched Claude Opus 5.5 on September 22, 2026. Seat prices on claude.com did not move. The operator event is the unit price: Opus 5.5 lists at $4 per million input tokens and $20 per million output tokens — 20% below Opus 5 at $5 / $25.
Official sources: anthropic.com/claude-opus-5-5, platform.claude.com pricing, September 22 rate card, claude.com/pricing.
What changed
Opus 5.5 is a new SKU, not a rename of Opus 5. Anthropic says it performs at the level of Fable 5.1 on most work and costs about 40% less than Opus 5 on typical token-billed workloads because cache reads fell more than the headline rate.
| Opus 5 | Opus 5.5 | |
|---|---|---|
| Input / MTok | $5 | $4 |
| Output / MTok | $25 | $20 |
| 5-minute cache write | $6.25 | $5 |
| 1-hour cache write | $10 | $8 |
| Cache read | $0.50 | $0.20 |
| Fast mode | $10 / $50 | $8 / $40 |
| Batch | $2.50 / $12.50 | $2 / $10 |
Cache reads on Opus 5.5 are 0.05x input ($0.20), not the 0.1x used on Opus 5. That is the line that moves agent and Claude Code bills. US-only inference stays 1.1x on both SKUs.
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. Sonnet 5 remains $2 / $10. Haiku 4.5 remains $1 / $5. Fable 5.1 remains $10 / $50 with $0.25 cache reads.
Opus 5.5 is available on Pro, Max, Team, and Enterprise. Anthropic also said five-hour usage limits on those plans increased with the launch. Confirm the live window in Settings > Usage. Do not treat a help-center message count as a hard cap.
Operator note
If you are pinned to claude-opus-5, you are still on the $5 / $25 meter. Switch to claude-opus-5-5 if the workload can move. Fast mode is first-party Claude API only at $8 / $40. Cursor on-demand that routes to Anthropic list will pick up the new SKU when Cursor exposes it — Cursor seat prices on cursor.com ($20 Individual, $40 Teams) did not move with this launch.
Live desks: API rates · seat tiers · Claude Code vs Cursor.
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