Anthropic Launches Claude Opus 5.5 with Lower Prices and Enhanced Security
Anthropic has launched Claude Opus 5.5, featuring a 20 percent reduction in token pricing, significantly lower cache costs, and more robust protection against security bypasses.
What happened?
Anthropic has released Claude Opus 5.5, the first model in the Claude 5.5 family. The model carries a list price of $4 per million input tokens and $20 per million output tokens, representing a price reduction of approximately 20 percent compared to Opus 5. Furthermore, the cost for cache reads is lowered by 60 percent to $0.20 per million tokens.
Key facts
| Lanseringsdatum | 22 september 2026 |
|---|---|
| Pris per miljon indatatokens | 4 USD |
| Pris per miljon utdatatokens | 20 USD |
| Pris cache-läsning per miljon tokens | 0,20 USD |
| Prissänkning cache-läsningar | 60 % |
Why it matters
Anthropic states that Opus 5.5 performs on par with its flagship model, Fable 5.1, but at a significantly lower operational cost. At the same time, the model has been reinforced to better resist attempts to circumvent security protocols (so-called jailbreaks) compared to previous versions.
Who is affected?
The launch impacts developers and technology companies building on the Anthropic API that require high model capacity at lower operational costs. Organizations with strict requirements regarding model security will also benefit from the improved safety guardrails.
What else you should know
The price reduction on cache reads significantly lowers operational costs for applications that rely on recurring context or extensive system instructions.
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