Nous Research: Hermes 3 405B Instruct

Public pricingIntelligence 79/100Medium memoryTool use

Nous: Hermes 3 405B Instruct is a text model for reasoning, planning, and automation. It combines reliable tool use and agent behavior and deep reasoning and planning with a 131K tokens context window and a balanced-cost profile. Use it for reasoning, planning, and multi-step automation when quality, speed, and cost matters.

Input

$1.00/1M

Output

$1.00/1M

Cached

$0.07/1M

Batch

$0.35/1M

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Technical specifications

Hermes 3 405B Instruct at a glance.

Memory

131,072

tokens

Max reply

16,384

tokens

Memory tier

Medium

a long report or a codebase file

Tokenizer

llama3

Released

Aug 2024

Training cutoff

Dec 2023

Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick Hermes 3 405B Instruct

  • Agentic workflows that call tools or APIs.

When to look elsewhere

  • Your workload involves images — pick a vision-capable model instead.

Alternatives

Similar models to compare.

FAQ

Hermes 3 405B Instruct — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

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At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, Hermes 3 405B Instruct costs roughly $115 per month. Input is $1.00 /1M tokens and output is $1.00 /1M tokens.
Hermes 3 405B Instruct has a 131,072-token context window (medium memory — a long report or a codebase file). That means you can fit about 24,576 words of input and history in a single call.
Beyond text generation, Hermes 3 405B Instruct supports calling functions / tools, strict JSON output, fine-tuning on your own data. It streams replies by default.
Hermes 3 405B Instruct was released in August 2024, with training data cut off around December 2023.
Models in a similar class include Hermes 4 405B, Hermes 3 70B Instruct, Hermes 2 Pro - Llama-3 8B. The "Similar models" section below this FAQ links into each.

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