Models/Nous Research/Hermes 3 405B Instruct

Hermes 3 405B Instruct

Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the...

01

Identity

131,072Context in
16,384Context out
2024-08-16 (OpenRouter created 1723766400)Released
OpenWeights
Canonical name
Hermes 3 405B Instruct
Aliases
nousresearch/hermes-3-llama-3.1-405b, NousResearch/Hermes-3-Llama-3.1-405B
Continuum hosted id
Not listed as a Continuum hosted id
OpenRouter slug
nousresearch/hermes-3-llama-3.1-405b
Hugging Face
NousResearch/Hermes-3-Llama-3.1-405B
Modalities
text
Open weights Not on Continuum host list Open

Context window on the 2026-08-19 OpenRouter row: 131,072 tokens.

Max completion tokens on that row: 16,384.

Input / output on that row: $1.00 / $1.00 per 1M tokens.

Architecture fields: text->text · Llama3 · chatml.

Hugging Face id on that row: NousResearch/Hermes-3-Llama-3.1-405B.

02

Should I use this for coding agents

Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements

When you want the 2024-08-16 catalog SKU, not a later rename.

No independent row for this SKU

No independent board lists this exact SKU as of 2026-08-19.

No other card from this lab carries an independent board row either, so there is no sibling worth pointing at.

Boards checked: DeepSWE official (2026-08-13), Artificial Analysis Intelligence Index, vals.ai hero index. Every card that does carry a row is on the coding leaderboard.

DeepSWE

No official DeepSWE mini-swe-agent row for this identity on the public board we fetched.

omitted, not invented as of 2026-08-13 source
Artificial Analysis

No Intelligence Index integer fetched for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source
Vals Index

We did not open a vals.ai card for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source
03

When not to use it

Trust this before you buy

  • When you need a Continuum-hosted SKU from this lab, use the hosted card on this hub instead of this catalog row.
  • $1.00 in / $1.00 out per 1M on the 2026-08-19 OpenRouter row. Context 131,072 in / 16,384 out.
  • Need a denser published sibling on this hub? Hermes 4 is the card already on the cluster.
  • When the job needs a published DeepSWE, Artificial Analysis, or vals.ai chip: this page does not invent one. Those boards did not list this exact SKU on 2026-08-19.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.

04

Artifact and Hugging Face downloads

Artifact

SPDX / license
llama3
Total params
HF safetensors.total: 405,853,388,800 stored tensors
Native precision
HF tensors BF16
Repo size
HF API usedStorage 811,706,916,800 bytes
HF created
2024-08-13T04:57:53.000Z
Official HF repo
NousResearch/Hermes-3-Llama-3.1-405B
HF downloads
611
HF likes
273

Official weights id on the 2026-08-19 OpenRouter row: NousResearch/Hermes-3-Llama-3.1-405B. Community GGUF is a quant, not a second Continuum card.

Official weights

This is the model repo, not Download for Mac. Downloads and likes from the Hugging Face API on 2026-08-19.

Hub file tree

Safetensor shards
191
Shard bytes
811,706,916,800 bytes
Other file bytes
9,250,527 bytes
Tree file count
199
Hub usedStorage
811,706,916,800 bytes

usedStorage and the sum of .safetensors sizes can differ (LFS pointers, non-shard files, duplicate copies). Cited separately. Source: recursive tree API, 2026-08-19.

PathBytes
model-00001-of-00191.safetensors4,806,672,880
model-00002-of-00191.safetensors4,026,532,224
model-00003-of-00191.safetensors4,630,578,112
model-00004-of-00191.safetensors4,630,578,112
model-00005-of-00191.safetensors3,489,661,192
model-00006-of-00191.safetensors4,630,578,112
model-00007-of-00191.safetensors4,630,578,112
model-00008-of-00191.safetensors3,489,661,192
model-00009-of-00191.safetensors4,630,578,112
model-00010-of-00191.safetensors4,630,578,112
model-00011-of-00191.safetensors3,489,661,192
model-00012-of-00191.safetensors4,630,578,112
model-00013-of-00191.safetensors4,630,578,112
model-00014-of-00191.safetensors3,489,661,192
model-00015-of-00191.safetensors4,630,578,112
model-00016-of-00191.safetensors4,630,578,120
model-00017-of-00191.safetensors3,489,661,192
model-00018-of-00191.safetensors4,630,578,120
model-00019-of-00191.safetensors4,630,578,120
model-00020-of-00191.safetensors3,489,661,192
model-00021-of-00191.safetensors4,630,578,120
model-00022-of-00191.safetensors4,630,578,120
model-00023-of-00191.safetensors3,489,661,192
model-00024-of-00191.safetensors4,630,578,120
model-00025-of-00191.safetensors4,630,578,120
model-00026-of-00191.safetensors3,489,661,192
model-00027-of-00191.safetensors4,630,578,120
model-00028-of-00191.safetensors4,630,578,120
model-00029-of-00191.safetensors3,489,661,192
model-00030-of-00191.safetensors4,630,578,120
model-00031-of-00191.safetensors4,630,578,120
model-00032-of-00191.safetensors3,489,661,192
model-00033-of-00191.safetensors4,630,578,120
model-00034-of-00191.safetensors4,630,578,120
model-00035-of-00191.safetensors3,489,661,192
model-00036-of-00191.safetensors4,630,578,120
model-00037-of-00191.safetensors4,630,578,120
model-00038-of-00191.safetensors3,489,661,192
model-00039-of-00191.safetensors4,630,578,120
model-00040-of-00191.safetensors4,630,578,120
model-00041-of-00191.safetensors3,489,661,192
model-00042-of-00191.safetensors4,630,578,120
model-00043-of-00191.safetensors4,630,578,120
model-00044-of-00191.safetensors3,489,661,192
model-00045-of-00191.safetensors4,630,578,120
model-00046-of-00191.safetensors4,630,578,120
model-00047-of-00191.safetensors3,489,661,192
model-00048-of-00191.safetensors4,630,578,120
model-00049-of-00191.safetensors4,630,578,120
model-00050-of-00191.safetensors3,489,661,192
model-00051-of-00191.safetensors4,630,578,120
model-00052-of-00191.safetensors4,630,578,120
model-00053-of-00191.safetensors3,489,661,192
model-00054-of-00191.safetensors4,630,578,120
model-00055-of-00191.safetensors4,630,578,120
model-00056-of-00191.safetensors3,489,661,192
model-00057-of-00191.safetensors4,630,578,120
model-00058-of-00191.safetensors4,630,578,120
model-00059-of-00191.safetensors3,489,661,192
model-00060-of-00191.safetensors4,630,578,120
model-00061-of-00191.safetensors4,630,578,120
model-00062-of-00191.safetensors3,489,661,192
model-00063-of-00191.safetensors4,630,578,120
model-00064-of-00191.safetensors4,630,578,120
tokenizer.json9,085,140
model.safetensors.index.json94,027
tokenizer_config.json55,808
README.md12,554
.gitattributes1,519
config.json888
special_tokens_map.json444
generation_config.json147

Showing the first 64 of 191 safetensor shards, plus 8 other files. The snapshot was capped at 64 shards when the tree API was read on 2026-08-19, so the remaining 127 are on the Files tab, not on this page. Totals above are the full tree API sum, not this slice. Byte sizes are Hub tree API size fields, never invented.

05

Continuum serving

OpenRouter slug nousresearch/hermes-3-llama-3.1-405b on the 2026-08-19 catalog.

First party: https://nousresearch.com/.

Not on the Continuum host list fetched 2026-08-19.

Continuum hosted id not on the host list

We list first-party and OpenRouter, plus Continuum only when the live public allowlist named the id. This is not a 15-host routing table.

06

Economics

OpenRouter 2026-08-19: $1.00 in / $1.00 out per 1M tokens. Context 131,072 in / 16,384 out.

No separate internal-reasoning price on that row.

Price this model Opens the pricing calculator preloaded with Hermes 3 405B Instruct.
07

Provenance

ClaimSourceAs of
OpenRouter id nousresearch/hermes-3-llama-3.1-405b; context 131072; created 1723766400; $1.00 / $1.00 per 1MOpenRouter /api/v1/models2026-08-19
OpenRouter id nousresearch/hermes-3-llama-3.1-405b, context 131,072OpenRouter /api/v1/models2026-08-19
HF downloads 611Hugging Face API NousResearch/Hermes-3-Llama-3.1-405B2026-08-19
HF safetensors.total: 405,853,388,800 stored tensors; HF API usedStorage 811,706,916,800 bytes; created 2024-08-13T04:57:53.000Z; HF tensors BF16Hugging Face API NousResearch/Hermes-3-Llama-3.1-405B2026-08-19
191 safetensor shards; shard bytes 811,706,916,800; tree files 199Hugging Face tree API NousResearch/Hermes-3-Llama-3.1-405B2026-08-19
08

Compare, FAQ, and Get Plus

No other card in this cluster shares a published DeepSWE official row we can put next to this one. We will not compare on vendor-blog numbers.

Continue through Nous Research's model family with Hermes 4.

FAQ

Why does the lab blog disagree with DeepSWE or Scale?

Lab posts pick a harness, an effort, a split, and sometimes a private eval set. DeepSWE publishes the official mini-swe-agent row with cost, tokens, and steps. Scale SWE-bench Pro only counts when the public shared-harness board has a row we can fetch. A higher lab number is usually a different test, not a better one.

OpenAI-compatible call

No Continuum hosted id is verified for this model, so this page does not invent a curl target. Use the first-party API or the OpenRouter slug nousresearch/hermes-3-llama-3.1-405b.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.