Aethos · Pricing · by STK Engineering Sovereign AI · One-time investment · 2026

One investment.
Full sovereignty.

Every Aethos product is a one-time license with annual support — no recurring SaaS fees, no per-seat metering, no cloud dependency. Your AI, your infrastructure, your asset.

I · AETHOS RAG Sovereign Knowledge

Aethos RAG

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Team €19,000 one-time license €3,800 / yr annual support Up to 100K documents
  • Semantic search (hybrid BM25+vector)
  • Source-cited answers
  • On-premise embeddings
  • 3 source connectors
  • Access control inheritance (ACL)
  • Domain adaptation
  • LDAP/AD integration
  • Incremental sync
  • Horizontal scaling / sharding
  • Air-gap deployment
Support: Email, 48h
Enterprise €99,000 one-time license €19,800 / yr annual support 10M+ documents
  • Semantic search (hybrid BM25+vector)
  • Source-cited answers
  • On-premise embeddings
  • Unlimited connectors + SDK
  • Access control inheritance (ACL)
  • Domain adaptation
  • LDAP/AD integration
  • Incremental sync
  • Horizontal scaling / sharding
  • Air-gap deployment
Support: Dedicated engineer, 4h SLA
II · AETHOS CODER Autonomous Engineering Agent

Aethos Coder

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Starter €29,000 one-time license €5,800 / yr annual support Up to 10 seats
  • Code generation (all languages)
  • Codebase understanding & RAG
  • Testing & verification
  • Debugging & diagnostics
  • Refactoring & modernisation
  • DevOps & CI/CD generation
  • Security & compliance (SAST, CVE)
  • Documentation generation
  • Air-gap deployment
  • Custom model fine-tuning
Support: Email, 48h
Enterprise €149,000 one-time license €29,800 / yr annual support Unlimited seats
  • Code generation (all languages)
  • Codebase understanding & RAG
  • Testing & verification
  • Debugging & diagnostics
  • Refactoring & modernisation
  • DevOps & CI/CD generation
  • Security & compliance (SAST, CVE)
  • Documentation generation
  • Air-gap deployment
  • Custom model fine-tuning
Support: Dedicated engineer, 4h SLA
III · AETHOS VOICE Local Speech AI

Aethos Voice

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Core €24,000 one-time license €4,800 / yr annual support
  • Speech recognition (Whisper)
  • Speech synthesis (F5-TTS/Kokoro)
  • Streaming pipeline (<200ms)
  • Multilingual (30+ languages)
  • Voice cloning
  • NPU acceleration
  • SIP trunk integration
  • Barge-in / interruption handling
  • Domain vocabulary adaptation
  • Air-gap deployment
  • Custom model fine-tuning
Support: Email, 48h
Enterprise €119,000 one-time license €23,800 / yr annual support
  • Speech recognition (Whisper)
  • Speech synthesis (F5-TTS/Kokoro)
  • Streaming pipeline (<200ms)
  • Multilingual (30+ languages)
  • Voice cloning (unlimited)
  • NPU acceleration
  • SIP trunk integration
  • Barge-in / interruption handling
  • Domain vocabulary adaptation
  • Air-gap deployment
  • Custom model fine-tuning
Support: Dedicated engineer, 4h SLA
IV · AETHOS AVATAR Sovereign Digital Humans

Aethos Avatar

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Stage €39,000 one-time license €7,800 / yr annual support
  • MetaHuman rendering (UE5)
  • 52-channel facial animation
  • Real-time lip-sync (NeuroSync)
  • Emotion synthesis
  • Voice-driven animation
  • 1 custom avatar character
  • 2 languages
  • Kiosk / terminal mode
  • Live event mode
  • Multi-avatar scenes
Support: Email, 48h
Production €189,000 one-time license €37,800 / yr annual support
  • MetaHuman rendering (UE5)
  • 52-channel facial animation
  • Real-time lip-sync (NeuroSync)
  • Emotion synthesis
  • Voice-driven animation
  • Unlimited custom avatars
  • 30+ languages
  • Kiosk / terminal mode
  • Live event mode
  • Multi-avatar scenes
Support: Dedicated engineer, 4h SLA
Team €19,000 one-time license €3,800 / yr annual support Up to 100K documents
  • Semantic search (hybrid BM25+vector)
  • Source-cited answers
  • On-premise embeddings
  • 3 source connectors
  • Access control inheritance (ACL)
  • Domain adaptation
  • LDAP/AD integration
  • Incremental sync
  • Horizontal scaling / sharding
  • Air-gap deployment
Support: Email, 48h
Enterprise €99,000 one-time license €19,800 / yr annual support 10M+ documents
  • Semantic search (hybrid BM25+vector)
  • Source-cited answers
  • On-premise embeddings
  • Unlimited connectors + SDK
  • Access control inheritance (ACL)
  • Domain adaptation
  • LDAP/AD integration
  • Incremental sync
  • Horizontal scaling / sharding
  • Air-gap deployment
Support: Dedicated engineer, 4h SLA
V · AETHOS VR Immersive Experiences

Aethos VR

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Experience €49,000 one-time license €9,800 / yr annual support
  • UE5 rendering pipeline
  • 1 AI-driven NPC
  • Spatial audio (HRTF)
  • Quest only
  • Multi-user sessions
  • Pixel streaming
  • 1 custom environment
  • Live event mode
  • Analytics & performance tracking
  • On-premise streaming infra
Support: Email, 48h
Enterprise €249,000 one-time license €49,800 / yr annual support
  • UE5 rendering pipeline
  • Unlimited AI-driven NPCs
  • Spatial audio (HRTF)
  • Quest + PCVR + Varjo + Desktop
  • Multi-user (up to 100+)
  • Pixel streaming
  • Unlimited custom environments
  • Live event mode
  • Analytics & performance tracking
  • On-premise streaming infra
Support: Dedicated engineer, 4h SLA
VI · PLATFORM BUNDLES More products, better value

Bundle & save.

Duo 15% off combined license & support
  • Any 2 Aethos products
  • 15% off combined license
  • 15% off combined support
  • Shared architecture workshop
Full Platform 35% off combined license & support
  • All 5 Aethos products
  • 35% off combined license
  • 35% off combined support
  • Architecture workshop included
  • Dedicated integration engineer
  • Priority roadmap input
VII · SERVICES À la carte implementation

Implementation services.

Architecture Workshop (1 day, on-site) €4,500
Proof of Concept (6 weeks) €24,000
Pilot Operation (3–6 months) €48,000 – €96,000
Custom model fine-tuning (per model) €8,000
Custom avatar character (per MetaHuman) €6,000
Custom VR environment (per scene) €15,000 – €45,000
Custom voice clone (per voice) €3,000
Custom source connector (RAG) €5,000
On-site training (per day) €2,800
VIII · GET STARTED Let's talk pricing

Begin where it
proves itself.

Ready to invest in sovereign AI? Tell us which products interest you and we'll prepare a tailored proposal.

Vienna, Austria
office@stk-engineering.com
Ferrogasse 59, 1180 Wien
Belgrade, Serbia
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Chalandri, Greece
office@stk-engineering.com
Nestoros 1, 15231 Chalandri
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