Using Chronos Hermes 13B V2 on Fireworks AI

Implementation guide · Chronos Hermes · Austism

ProvisionedOpen Weights

Fireworks AI exposes Chronos Hermes 13B V2 through model ID accounts/fireworks/models/chronos-hermes-13b-v2. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-05-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Fireworks AI and generate an API key.
  2. 2
    Use the Fireworks AI SDK or REST API to call accounts/fireworks/models/chronos-hermes-13b-v2 — see the documentation for request format.
  3. 3
    You'll be billed $0.20/1M input, $0.20/1M output tokens. See full pricing.

Code Examples

Install
pip install openai
API key
FIREWORKS_API_KEY
Model ID
accounts/fireworks/models/chronos-hermes-13b-v2

Fireworks model IDs use "accounts/fireworks/models/{model-name}" format, e.g. "accounts/fireworks/models/llama4-scout-instruct-basic" or "accounts/fireworks/models/deepseek-r1".

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["FIREWORKS_API_KEY"],
    base_url="https://api.fireworks.ai/inference/v1"
)
response = client.chat.completions.create(
    model="accounts/fireworks/models/chronos-hermes-13b-v2",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Pricing on Fireworks AI

TypePrice (per 1M)
Input tokens$0.20
Output tokens$0.20

Capabilities

Structured Outputs

About Chronos Hermes 13B V2

The Chronos Hermes 13B v2 is a sophisticated large language model that merges Chronos and Nous-Hermes-Llama2-13b, striking a balance between imaginative writing and enhanced coherence. This model excels in generating extensive, high-quality prose and maintains context over 4096 tokens, making it ideal for narrative creation and roleplaying. Built on the Llama transformer architecture, it supports both text and code generation. Quantized versions optimize for various hardware, though this often results in trade-offs between accuracy and performance. Despite its capabilities, the model demands considerable RAM and may exhibit repetitive outputs, especially in formats aligned with Alpaca prompts.

Model Specs

Released2023-12-15
Parameters13B
Context4k
ArchitectureDecoder Only

Provider

Fireworks AI

San Mateo, California, United States