Anthropic Claude

As an AI consultancy from Rosenheim we help companies in Germany, Austria and Switzerland with the GDPR-compliant integration of Anthropic Claude. Through CompanyGPT the new top model Claude Opus 5 (claude-opus-5, 24 July 2026), Claude Sonnet 5 (claude-sonnet-5, 30 June 2026), along with Opus 4.8 and Haiku 4.5, can be operated securely inside your own cloud — via AWS Bedrock (Ireland and Stockholm in-region for Opus 5 and Opus 4.8, Frankfurt via the EU cross-region inference profile) or the Gemini Enterprise Agent Platform (formerly Vertex AI); Microsoft Foundry offers Claude as well, but so far without an EU data zone. Note: Claude Fable 5 and Mythos 5, introduced in June 2026, were disabled worldwide by order of the US government three days after launch – on 30 June 2026 the directive was fully lifted. Claude Fable 5 (claude-fable-5) has been available worldwide again since 1 July 2026, including via Bedrock, Vertex AI and Microsoft Foundry; due to the mandatory 30-day data retention without a zero-data-retention option, it is only suitable to a limited extent for strict GDPR workflows. Mythos 5 remains restricted to vetted organizations (see section below).

Claude 3P: Anthropic as a multi-cloud model

Since the Sonnet 3 generation Anthropic has pursued a consistent multi-cloud strategy. Claude models are not only delivered via Anthropic’s own API but in parallel through the three large hyperscalers. Anthropic refers to this third-party distribution internally and in its documentation as Claude 3P (Third Party). For enterprise buyers this is usually the more relevant variant because it enables GDPR-compliant use through familiar EU cloud regions.

The three Claude 3P paths are:

• AWS Bedrock, the Claude platform on Amazon. Anthropic has been a strategic AWS partner since 2023 and Claude models are a first-class citizen of Bedrock. Frankfurt (eu-central-1) is a source region for EU cross-region inference (routing inside the EU geography); single-region hosting is available in Ireland (eu-west-1), Stockholm (eu-north-1) or Frankfurt depending on the model.
• Gemini Enterprise Agent Platform (formerly Vertex AI), the Google Cloud platform for models and agents. Google renamed Vertex AI to Gemini Enterprise Agent Platform at Cloud Next 2026 on 22 April 2026, all previous Vertex AI capabilities are included. Claude runs via the Model Garden, EU hosting through Frankfurt (europe-west3) or the EU multi-region endpoint.
• Microsoft Foundry (formerly Azure AI Foundry), the Microsoft platform for models and agents. Anthropic models have been GA in the model catalogue as Claude 3P since early July 2026. Important caveat: Claude currently runs in Foundry only as a Global Standard deployment (hosted in Sweden Central, among others) — there is no EU data zone deployment, so processing is not restricted to the EU and Anthropic remains the independent data processor. Microsoft lists “Foundry in Europe” as coming in 2026.

For GDPR-compliant deployments in the DACH region the de-facto choice has settled on consuming Claude through AWS Bedrock (EU regions) or the Agent Platform (Frankfurt or EU multi-region). Given the missing EU data zone, Microsoft Foundry is currently only an option for Claude when strict EU residency is not required.

Key strengths

Constitutional AI

Claude is built on Constitutional AI, a safety approach that anchors ethical principles directly in the training process. Instead of relying exclusively on human feedback the model learns to avoid harmful or inappropriate output against a defined set of constitutional principles. For enterprises this means a lower risk profile when interacting with sensitive data and higher predictability in production. In regulated sectors such as finance, healthcare and public administration this approach helps demonstrate compliance.

Extended context (1M token GA)

Claude offers a context window of one million tokens, generally available (GA) at no premium for Opus 5, Sonnet 5, Sonnet 4.6, Opus 4.6, Opus 4.7 and Opus 4.8. That corresponds to roughly 700,000 words or several hundred pages of documentation. For enterprise use this opens up new options. Entire contract corpora, technical documentation or large project archives can be processed in a single request. API cost note: A 1M token context increases the cost per request significantly. For cost-optimised setups we recommend keeping the context only as large as needed and using Haiku 4.5 for simpler tasks.

Claude Fable 5 & Mythos 5: withdrawn in June, Fable 5 back since July 2026

On 9 June 2026 Anthropic released Claude Fable 5 (claude-fable-5), the first publicly available Mythos-class model, alongside the access-restricted Claude Mythos 5 (claude-mythos-5, Project Glasswing). After a three-week withdrawal, Fable 5 has been available again since 1 July 2026; Mythos 5 remains access-restricted.

On 12 June 2026 (5:21 PM ET) the US government issued an export-control / national-security directive requiring all access to Fable 5 and Mythos 5 by any foreign national (inside or outside the US, including foreign-national Anthropic employees) to be suspended immediately. Because nationality cannot be verified in real time at the API layer, Anthropic disabled Fable 5 and Mythos 5 for all customers worldwide — just three days after launch.

The background is an escalating dispute between Anthropic and the US government: the Pentagon had demanded unrestricted access to Claude, and Anthropic refused two uses (fully autonomous lethal weapons and mass domestic surveillance of US citizens). The stated trigger was a government claim of a “potential narrow, non-universal jailbreak” of Fable 5. Anthropic says it received only verbal notice and publicly disagreed that this warranted a recall.

Update 26 June 2026 – Mythos 5 partially re-enabled (US only): US Commerce Secretary Howard Lutnick partially lifted the directive and re-enabled Mythos 5 (the variant without a safety classifier) for a defined list of more than 100 vetted US organizations in critical infrastructure (government agencies and private companies). Fable 5 initially remained offline for all users worldwide at that point, and general users, foreign nationals and EU / non-US customers had no access to either Fable 5 or Mythos 5.

Update 30 June / 1 July 2026 – directive fully lifted, Fable 5 back worldwide: On 30 June 2026 the US Commerce Department fully lifted the export restrictions on both models (Anthropic: “Redeploying Fable 5”). Since 1 July 2026, Claude Fable 5 has been globally available again – on Claude.ai, via the Claude API, in Claude Code and Claude Cowork, and per Anthropic’s docs also via Amazon Bedrock, Vertex AI and Microsoft Foundry. Pricing is $10/MTok input and $50/MTok output; a new safety classifier blocks the disputed jailbreak in over 99% of cases according to Anthropic, with blocked requests falling back to Opus 4.8. The lift comes with conditions (proactive risk detection, cooperation on standards, reporting of malicious use). Mythos 5, by contrast, remains access-restricted – invitation-only via Project Glasswing for vetted organizations.

What this means for EU enterprises: Fable 5 has been usable by EU customers since 1 July 2026 – with one weighty compliance caveat: according to Anthropic, prompts and outputs of Mythos-class models are retained for 30 days on every platform – including Bedrock, Vertex and Foundry endpoints in the EU; existing zero-data-retention agreements do not cover Fable 5 traffic. Since 24 July 2026, Claude Opus 5 (claude-opus-5) is therefore the recommendation for strict GDPR workflows (such as §203 scenarios): per Anthropic it comes close to Fable 5 (and beats it on some benchmarks) — at half the price, without the 30-day retention mandate and with a zero-data-retention option (the default on Bedrock). Fable 5 is an option for workloads where the 30-day retention is acceptable and documented.

Only a few days later, OpenAI followed a similar pattern: GPT-5.6 (Sol/Terra/Luna) also launched on 26 June 2026 only as a government-cleared limited preview (see OpenAI GPT). The case underlines why a provider- and model-agnostic, data-sovereign setup matters for EU enterprises. If a single model can be withdrawn overnight, that must not jeopardize business operations. CompanyGPT secures exactly that by flexibly routing requests across Opus 5, Sonnet 5 or models from other providers. Read more in our blog post on GPT-5.6 and Claude Fable 5.

Claude Sonnet 5: new mid-tier flagship (30 June 2026)

With Claude Sonnet 5 (claude-sonnet-5) Anthropic released its most capable Sonnet model to date on 30 June 2026. It supersedes Sonnet 4.6 as the default mid-tier recommendation and, according to Anthropic, significantly closes the gap to the Opus class (Opus 4.8) — at a fraction of the cost. Anthropic highlights, among others, 34.6% on Humanity’s Last Exam (no tools) and 46.8% (with tools), as well as tangible gains in coding, agentic web search (BrowseComp) and computer use (OSWorld-Verified).

Pricing: At launch there is an introductory price of USD 2 per 1M input tokens and USD 10 per 1M output tokens through 31 August 2026; thereafter USD 3 / USD 15. That puts Sonnet 5 initially even below the price of Sonnet 4.6 and makes it particularly attractive for larger rollouts.

EU availability: Sonnet 5 is available via AWS Bedrock (Bedrock invoke uses an inference profile; the supported EU regions / EU geo-inference profile are listed in the Bedrock docs). The Gemini Enterprise Agent Platform (formerly Vertex AI), announced only as “coming soon” at launch, has since caught up: Sonnet 5 (claude-sonnet-5) runs there with a 1M token context window via the global and the EU multi-region endpoint — routing stays inside EU geography. Microsoft Foundry offers Sonnet 5 as well, but so far without an EU data zone (see the Foundry note above). Through CompanyGPT Sonnet 5 can therefore be operated GDPR-compliantly inside your own cloud.

Claude Opus 5: new flagship of the Claude family (24 July 2026)

With Claude Opus 5 (claude-opus-5) Anthropic released the first Opus model of the fifth Claude generation on 24 July 2026 — its fourth new model in under two months (after Mythos 5, Fable 5 and Sonnet 5). The positioning is remarkable: per Anthropic, Opus 5 comes close to the frontier intelligence of Fable 5 — at half the price — and even beats Fable 5 on some benchmarks. On Frontier-Bench v0.1 and GDPval-AA (knowledge work) Opus 5 is the new state of the art according to Anthropic, with roughly twice the Frontier-Bench performance of Opus 4.8. On CursorBench 3.2 it lands within 0.5% of Fable 5 at about half the cost per task, on ARC-AGI 3 it scores roughly 3× the next-best model per Anthropic, and on OSWorld 2.0 (computer use) it takes the top score at a third of Fable 5’s cost. In specialist domains Anthropic reports +10.2 percentage points on organic chemistry and +7.7 percentage points on protein tasks versus Opus 4.8. Only on cybersecurity exploitation and biology research does Mythos 5 stay ahead. Anthropic describes Opus 5 as much stronger at verifying its own work and iterating carefully until it actually succeeds; on the automated behavioral audit it posts the lowest misalignment score of recent Claude models at 2.3.

Pricing: USD 5 per 1M input tokens, USD 25 per 1M output tokens — identical to Opus 4.8. The capability jump comes without a price increase. New is an optional fast mode at twice the price that responds roughly 2.5× faster. Performance scales with the effort setting, letting you trade maximum intelligence against token and latency savings per use case. Adaptive thinking is on by default. Opus 5 is the new default model on Claude Max and the strongest model on Claude Pro.

New platform features: Opus 5 ships mid-conversation tool changes (beta) and Automatic Fallbacks (beta): when a safety classifier triggers, the request is automatically routed to another model and returns a functional response instead of an error. Enterprises also gain access to the Cyber Verification Program. The cybersecurity safeguards remain in place but are expected to engage about 85% less often than on Fable 5, according to Anthropic.

GDPR-relevant — no 30-day retention mandate: Unlike Fable 5, Opus 5 has no data retention requirements for general access; on AWS Bedrock zero data retention is even enabled by default. Opus 5 therefore replaces Opus 4.8 as our recommendation for the most demanding workloads in GDPR-sensitive environments.

EU availability Opus 5 (as of 24 July 2026): On AWS Bedrock Opus 5 is available from day one in-region in eu-west-1 (Ireland) and eu-north-1 (Stockholm); Frankfurt (eu-central-1), Zurich (eu-central-2), Paris (eu-west-3), Madrid (eu-south-2), Milan (eu-south-1) and London (eu-west-2) are source regions for the EU cross-region inference profile (eu.anthropic.claude-opus-5) — requests are routed exclusively inside EU geography. On the Gemini Enterprise Agent Platform Opus 5 runs via the global and the EU multi-region endpoint (1M token context). Microsoft Foundry offers Opus 5 from day one, but so far without an EU data zone (global standard routing, see above). As with Opus 4.8: no in-region endpoint in Frankfurt — if strict single-region Frankfurt hosting on Bedrock is required, stay on Opus 4.6 for the Opus class.

Claude Opus 4.8: previous flagship (28 May 2026)

Claude Opus 4.8 (claude-opus-4-8) was Anthropic’s most capable model with a zero-data-retention option from late May until 24 July 2026 and remains GA; since 24 July 2026 Claude Opus 5 is the new top model at identical pricing (see above). The gap to Opus 4.7 is measurable rather than cosmetic: Anthropic reports 69.2% on Terminal-Bench 2 (Agentic Coding, up from 64.3% on Opus 4.7), 57.9% on HCAST with tools (multi-discipline reasoning, up from 54.7%) and a jump to 1890 Elo on Anthropic’s internal knowledge-work evaluation (up from 1753). Anthropic describes the model as having “sharper judgement, more honesty about its progress, and the ability to work independently for longer than its predecessors” — early testers report that Opus 4.8 is more likely to flag uncertainty explicitly instead of confabulating.

The release also ships two new platform features:

• Dynamic Workflow: Opus 4.8 can orchestrate multiple specialised sub-agents in parallel within a single request, moving Anthropic away from the serial single-agent model and competing more directly with multi-agent architectures.
• Effort control panel: Callers can dial how much “effort” (reasoning depth, tool calls, token budget) Claude is allowed to spend on a response. For CompanyGPT deployments this can be pinned per use case, making cost and latency predictable.

Crucially, pricing is identical to Opus 4.7 — USD 5 per 1M input tokens, USD 25 per 1M output tokens. Since Opus 5 (24 July 2026) ships at the same price as well, new projects should start directly on Opus 5; existing 4.7/4.8 deployments usually migrate with a model-ID swap.

EU availability Opus 4.8 (as of 30 May 2026): On AWS Bedrock Opus 4.8 is in-region in eu-west-1 (Ireland) and eu-north-1 (Stockholm). Frankfurt (eu-central-1), Zurich (eu-central-2), Paris (eu-west-3), Madrid (eu-south-2), Milan (eu-south-1) and London (eu-west-2) are enabled as source regions for the EU cross-region inference profile (eu.anthropic.claude-opus-4-8); requests are routed exclusively inside EU geography. On the Gemini Enterprise Agent Platform Opus 4.8 is reachable through the EU multi-region endpoint; Microsoft Foundry offers Opus 4.8 in Sweden Central from day one. Note: Unlike Opus 4.6, Opus 4.8 is not deployed as an in-region model in Frankfurt on Bedrock. If strict single-region Frankfurt hosting on Bedrock is required for Opus-class capability, stay on Opus 4.6.

Claude Opus 4.7: previous flagship (16 April 2026)

Claude Opus 4.7 was the top-tier model from April through late May 2026 and remains GA. Since Opus 4.8 ships better numbers on coding, tool-augmented reasoning and knowledge work at the same price, 4.7 no longer has a distinct use case for new builds. Existing deployments can usually migrate to 4.8 with a model-ID swap. EU availability: Bedrock, Gemini Enterprise Agent Platform (EU multi-region) and Microsoft Foundry Sweden Central.

Claude Sonnet 4.6: proven predecessor (superseded by Sonnet 5 since June 2026)

With Claude Sonnet 4.6 (claude-sonnet-4-6) Anthropic fundamentally shifted the cost structure for capable AI. The model reaches benchmark scores at Opus level (SWE-bench 79.6%, HumanEval 94.2%) at a significantly lower price point. Sonnet 4.6 is GDPR-compliantly available via AWS Bedrock Frankfurt and Gemini Enterprise Agent Platform Frankfurt — including strict single-region hosting in Frankfurt. Since 30 June 2026 Claude Sonnet 5 has been the new mid-tier flagship (see above); Sonnet 4.6 nevertheless remains a valid choice when strict single-region Frankfurt hosting on Bedrock is required (for Sonnet 5 the supported EU regions are listed in the Bedrock docs).

For mid-sized companies in the DACH region this means enterprise-grade AI performance at cost levels that make larger rollouts economically viable. With 89.1% on MMLU-Pro Sonnet 4.6 demonstrates excellent performance on complex reasoning tasks, ideal for use cases such as automated customer service, technical support, or business process analysis.

Agent Teams (Claude Opus 4.6)

Claude Opus 4.6 (claude-opus-4-6) introduced the Agent Teams feature, where multiple specialised AI agents collaborate in an orchestrated way. One agent handles data analysis, a second produces the report, a third performs quality control. This division of labour enables workflows that overwhelm a single model.

With 80.8% on SWE-bench Verified and 68.8% on ARC-AGI-2 Opus 4.6 shows particular strength on demanding coding and reasoning work. Opus 4.6 is available single-region in the EU through AWS Bedrock Frankfurt and Agent Platform Frankfurt. Cost note: Opus models are markedly more expensive than Sonnet. Use only when Opus-tier capability is genuinely required.

Project Glasswing: Mythos in cybersecurity research

Mythos-class models originate from Project Glasswing, Anthropic’s cybersecurity initiative. The predecessor Mythos Preview discovered thousands of previously unknown zero-day vulnerabilities across every major operating system and web browser, including a 27-year-old vulnerability in OpenBSD and a 16-year-old vulnerability in FFmpeg. The models introduced in June 2026 — Mythos 5 (without safety classifiers, for approved partners only) and Fable 5 (with safety guardrails for production scenarios) — were, however, withdrawn worldwide by order of the US government just three days after launch (see the section “Claude Fable 5 & Mythos 5: withdrawn by order of the US government”). On 30 June 2026 the directive was fully lifted: Fable 5 has been generally available again since 1 July 2026 (with mandatory 30-day data retention), while Mythos 5 remains access-restricted – invitation-only via Project Glasswing for vetted organizations.

Note on API cost

Claude models are expensive compared with other providers. For production deployments with many users we recommend a deliberate model strategy. Current token prices can be compared transparently at ai-prices.eu.

With CompanyGPT administrators can configure the right model per use case, typical savings of 60 to 80 percent compared with a pure Opus deployment become achievable.

Availability in the EU

EU availability of the Claude family is markedly better in 2026 than a year ago. Anthropic shipped Opus 4.7 (April 2026), Opus 4.8 (May 2026) and Opus 5 (24 July 2026) on all three third-party platforms on the day of release. Note: After the temporary withdrawal, Fable 5 has been globally available again since 1 July 2026 (with mandatory 30-day data retention); Mythos 5 remains restricted to vetted organizations (see section above).

AWS Bedrock:

• Opus 5 (24 July 2026): in-region in eu-west-1 (Ireland) and eu-north-1 (Stockholm). Frankfurt (eu-central-1), Zurich (eu-central-2), Paris (eu-west-3), Madrid (eu-south-2), Milan (eu-south-1) and London (eu-west-2) as source regions for the EU cross-region inference profile eu.anthropic.claude-opus-5. Routing stays within EU geography; zero data retention is enabled by default.
• Opus 4.8: in-region in eu-west-1 (Ireland) and eu-north-1 (Stockholm), same EU geo source regions via the profile eu.anthropic.claude-opus-4-8.
• Sonnet 5 (30 June 2026): available on Bedrock (invoke via inference profile). The specific supported EU regions / the EU geo-inference profile are listed in the Bedrock docs.
• Opus 4.7, Opus 4.6, Sonnet 4.6, 4.5 family: single-region in Frankfurt (eu-central-1). Cross-region inference within the EU available, improving availability for high-load workloads.

Gemini Enterprise Agent Platform (formerly Vertex AI, Frankfurt europe-west3 and EU multi-region): Claude 4.5 family and Claude 4.6 in Frankfurt single-region. Opus 5, Sonnet 5, Opus 4.8 and Opus 4.7 via the EU multi-region endpoint (aiplatform.eu.rep.googleapis.com) that exclusively routes within EU geography (10% premium over the global endpoint). Single-region endpoints support only Sonnet 4.6 and earlier per Anthropic’s docs.

Microsoft Foundry: Claude models exposed as Claude 3P in the model catalogue, GA since early July 2026, including Opus 5 and Sonnet 5 from day one. Important for the GDPR assessment: There is no EU data zone deployment for Claude in Foundry yet — the models run as Global Standard (hosted in Sweden Central, among others), processing is not restricted to the EU and Anthropic remains the independent data processor. Microsoft lists “Foundry in Europe” as coming in 2026. Until then we recommend Bedrock or the Agent Platform for strict EU residency.

For GDPR-compliant deployments we recommend: Opus 5 → AWS Bedrock eu-west-1 (Ireland) or eu-north-1 (Stockholm) in-region, or EU cross-region inference from Frankfurt, as the most capable available model with zero data retention; Sonnet 5 → AWS Bedrock or Agent Platform EU multi-region as the cost-efficient default with attractive introductory pricing; Sonnet 4.6 → AWS Bedrock Frankfurt single-region if strict in-region Frankfurt hosting is mandatory; Opus 4.6 → AWS Bedrock Frankfurt single-region if Opus-tier capability with strict in-region Frankfurt hosting is required.

Integration with CompanyGPT

Claude models are integrated into CompanyGPT and can be operated GDPR-compliantly inside your infrastructure. CompanyGPT enables deployment through your own cloud environment (AWS, Google Cloud, or Microsoft Azure) without forwarding data to third parties. Intelligent model routing helps optimise cost. Simple requests automatically go to Haiku 4.5, complex ones to Sonnet 5 (or Sonnet 4.6 when strict single-region Frankfurt is required), and demanding reasoning and agentic workloads (software engineering, long-horizon agents) to Opus 5. This flexibility is exactly what protects against dependence on a single model — if a model is pulled at short notice, as recently happened with Fable 5, CompanyGPT can switch seamlessly to another Claude model or another provider.

Typical deployment scenarios include integration into existing knowledge management systems, connection to ERP systems, or running as an internal chatbot for staff. With CompanyGPT you retain full control over access rights, audit logs and data flows, essential for sectors with high compliance requirements such as banking, insurance, or healthcare.

Our recommendation

For the most demanding workloads and top reasoning performance (EU): Claude Opus 5 (claude-opus-5). New flagship since 24 July 2026 — per Anthropic close to Fable 5, at half the price and without its 30-day retention mandate (zero data retention by default on Bedrock). Same price as Opus 4.8 (USD 5/25 per 1M tokens), EU hosting in-region on AWS Bedrock in Ireland and Stockholm, from Frankfurt via the EU cross-region inference profile, plus the EU multi-region endpoint of the Gemini Enterprise Agent Platform. Recommended for software engineering, long-horizon agents, multi-agent workflows and high-end reasoning. Existing Opus 4.8 deployments migrate with a model-ID swap at no cost delta.

For most business applications: Claude Sonnet 5 (claude-sonnet-5). Since 30 June 2026 the mid-tier flagship: Anthropic’s strongest Sonnet model, which according to Anthropic significantly closes the gap to the Opus class — at an introductory price of USD 2/10 per 1M tokens (through 31 Aug 2026, thereafter USD 3/15). EU-available via AWS Bedrock and now also via the Gemini Enterprise Agent Platform (EU multi-region, 1M token context). Claude Sonnet 4.6 (claude-sonnet-4-6) remains the choice when strict single-region Frankfurt hosting on Bedrock is required.

For in-region Frankfurt binding with Opus-tier capability: Claude Opus 4.6 (claude-opus-4-6). Opus 4.8 is not deployed as an in-region model in Frankfurt on Bedrock. If Opus-level performance is needed with strict single-region Frankfurt hosting on Bedrock, stay on Opus 4.6.

For cost-optimised applications: Claude Haiku 4.5 (claude-haiku-4-5). For high volume and simpler tasks (categorisation, simple extraction, content moderation) Haiku 4.5 offers the best price/performance ratio. EU-available across all three third-party platforms.

As innFactory AI Consulting we support you in selecting the right model, the GDPR-compliant integration and cost optimisation for your specific use cases. Contact us for an informal initial consultation.