Model catalogue · Anthropic
Claude Opus
Vendor: claude-opus-5.5, as of 29 September 2026
The most capable tier of Anthropic's standard Claude family, built for text work where precision matters: it keeps long chains of argument clean, brings out contradictions between several documents, and hits a register in German that works for pleadings and client correspondence. Under professional-secrecy law the route decides. Via Google Vertex AI the contractual chain is closed: the platform operator has signed the confidentiality agreement under section 203 of the German Criminal Code, and ahead of it the chain obligation under section 203(4) applies. Via Amazon Bedrock, despite far-reaching technical commitments, there is no signable document for that undertaking; buying directly from the vendor and the free consumer access do not carry professional secrets.
Everything section 203 requires is settled, including the provider's confidentiality undertaking, and nothing is stored at the provider, apart from a technical cache of a few minutes for Claude (zero retention). You do not have to clarify anything further.
The operator bills separately - input USD 4.40 · output USD 22.00. The figure above is the blend of the two, weighted three quarters input to one quarter output, as it arises in a firm. Charged at the vendor's list price, without a mark-up.
Google's list price in US dollars. Invoiced in euros at the European Central Bank reference rate on the last business day of the billing month, without a mark-up.
The providers set these prices; they can change at any time, and our figures may contain errors. The list price in force at the time is authoritative.
What it is good for
- Most capable tier of the standard Claude family for complex analysis and drafting
- No content access by Google or Anthropic on the Google platform (Anthropic documentation), with zero data retention through us
- Processing inside the EU
Where it stops
- Highest price and latency tier of the family - for high-volume tasks a more compact tier is the better choice
- EU endpoints carry a 10 percent surcharge
- CLOUD Act exposure remains as long as a US provider sits in the chain
- On the AWS route, binding to the EU is a per-call decision: the European inference profile routes within Europe and, depending on the profile, includes regions outside the EU member states (London, Zurich); a worldwide profile exists for the same model. Without enforcement through an organisational policy the EU location is available but not enforced (research date 2026-08-17)
Status through us
The same model, procured differently, is a different legal position. The status above refers to procurement through us; processing takes place in a third country.
Which route carries it, with which instrument and under which condition, we set out in full to the firm before it commissions us - section 203(4) requires that the chain can be checked, not that it is published. The full matrix, with the sources behind every route, can be requested in the German catalogue after confirming your e-mail address, and we go through it in the conversation.
Is Claude Opus the right fit?
We go through your tasks and the route that carries them - and say plainly where it does not.
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