Hermes 4 405B

by Nous Research

NousResearch Hermes 4 405B hybrid-reasoning on Nebius (EU)

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Key info

Input
Output
Features
Context window
131K
Max output
8K
Input price
$1.00 /1M
Output price
$3.00 /1M
  • EU residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

Hermes 4 405B runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
NebiusEUEnterpriseNo$1.00$3.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting Hermes 4 405B has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Nebius — Finland🇫🇮

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
Not applicable — data stays in EU

Compare Hermes 4 405B with…

Side-by-side on privacy, EU hosting, pricing, and benchmarks.

Hermes 4 405B vs Claude Opus 4.8Hermes 4 405B vs GPT-5.4Hermes 4 405B vs Gemini 3.5 FlashHermes 4 405B vs Hermes 4 70BHermes 4 405B vs Llama 4 Maverick 17B 128E Instruct FP8Build your own comparison

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Hermes 4 405B by Nous Research — pricing, benchmarks, EU hosting | Opper AI