Hermes 4 405B vs Hermes 4 70B

Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.

Hermes 4 405B

Nous Research · 405.9B

ChatReasoningRoleplay
Hermes 4 70B

Nous Research · 70B

ChatReasoningRoleplay

Specifications

Hermes 4 405BHermes 4 70B
Parameters405.9B70B
Context131K131K
ArchitectureLlamaForCausalLMLlamaForCausalLM
LicenseLlama 3 CommunityLlama 3 Community
Downloads546321
ReleasedSep 2025Sep 2025

VRAM by Quantization: Hermes 4 405B vs Hermes 4 70B

QuantizationBitsHermes 4 405B VRAMHermes 4 70B VRAM
BF1616.00813.1 GB141.0 GB

Verdict

Hermes 4 70B needs less VRAM at BF16 (141.0 GB vs 813.1 GB), so it fits on smaller GPUs. Hermes 4 405B is the more widely downloaded of the two.

Frequently Asked Questions

Which needs less VRAM, Hermes 4 405B or Hermes 4 70B?

At BF16, Hermes 4 405B needs 813.1 GB and Hermes 4 70B needs 141.0 GB, so Hermes 4 70B is the lighter option to run locally.

Which has a longer context window, Hermes 4 405B or Hermes 4 70B?

Hermes 4 405B supports 131,072 tokens and Hermes 4 70B supports 131,072 tokens.

What is the difference between Hermes 4 405B and Hermes 4 70B?

Hermes 4 405B is a 405.9B model from Nous Research (Hermes family), while Hermes 4 70B is a 70B model from Nous Research (Hermes family). Compare their VRAM requirements above to see which fits your GPU or Mac.