Anthropic Launches Claude Opus 5.5 – Reduced Pricing and New Cybersecurity Controls
Anthropic has launched Claude Opus 5.5, priced at $4 per million tokens. The model offers a 40 percent reduction in operational costs compared to Opus 5 and introduces new security controls for cybersecurity.

What happened?
Anthropic has launched Claude Opus 5.5, the inaugural model in the company’s Claude 5.5 series. The model is offered at a list price of $4 per million tokens and, according to Anthropic, delivers performance on par with Claude Fable 5.1 across most tasks. The operational cost is reported to be 40 percent lower than its predecessor, Opus 5, for typical workloads—an improvement achieved through a combination of a 20 percent reduction in list price and more efficient token usage per completed task.
Key facts
| Lanseringsdatum | 23 september 2026 |
|---|---|
| Pris per miljon tokens | 4 USD |
| Minskning av driftkostnad | 40% jämfört med Opus 5 |
| Listprissänkning | 20% |
Why it matters
Alongside performance improvements, Anthropic is introducing new control mechanisms for cybersecurity-related usage, branded as 'Cyber Routing'. This feature can automatically identify and redirect high-risk cybersecurity queries to other specific Claude models. This marks a step toward more automated risk management and price optimisation within advanced AI systems.
Who is affected?
Developers and enterprises building large-scale AI applications or performing complex coding and analysis tasks are directly impacted by the lower pricing and increased token efficiency. Security analysts and IT departments are also affected by the new cybersecurity controls when handling sensitive source code or vulnerability analyses.
Impact on the EU
The model is available globally as of its launch on 23 September 2026. As Anthropic adheres to the EU AI Act for high-capacity models, usage within the EU is subject to the company's updated safety and cybersecurity filters.
What else you should know
The launch follows several days of reporting and speculation regarding Anthropic's internal testing of the model prior to its official unveiling. Early adopters and developers have begun evaluations of the model's actual token efficiency and the real-world precision of the cybersecurity routing system.
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