Discover the Arcee AI: AFM 4.5B Model

Harness the power of AFM 4.5B for advanced text processing.

Input: text Output: text Context: 65,536 tokens Release: 2025-09-16

Arcee AI's AFM 4.5B, released in September 2025, is a powerful instruction-tuned language model designed for diverse text-to-text applications. With 4.5 billion parameters, it has been pretrained on a vast dataset of approximately 8 trillion tokens, including a significant focus on mathematical reasoning and code generation. The model supports a wide range of parameters, allowing for fine-tuning of outputs. Its extensive context window of 65,536 tokens enhances its ability to handle complex and lengthy text inputs effectively. Whether you're looking to generate detailed responses or perform intricate text analysis, AFM 4.5B is equipped to meet various needs, offering both text input and output modalities.

Use Cases

Here are a few ways teams apply Arcee AI: AFM 4.5B in practice—from fast drafting to multimodal understanding. Adapt these ideas to your workflow.

Generate detailed text responses

Perform complex text analysis

Enhance mathematical reasoning tasks

Facilitate code generation

Support long-form content creation

Key Features

A quick look at the capabilities that make this model useful in real projects.

4.5 billion parameters for robust performance

Pretrained on 8 trillion tokens

Focus on mathematical reasoning and code generation

65,536 token context window

Supports diverse text input and output

Customizable with various parameters

Specs

Overview

Vendor
arcee-ai

Model ID
arcee-ai/afm-4.5b

Release
2025-09-16

Modalities & context

Input
text

Output
text

Context
65,536 tokens

Parameters & defaults

Supported parameters: frequency_penalty, logit_bias, max_tokens, min_p, presence_penalty, repetition_penalty, response_format, stop, structured_outputs, temperature, top_k, top_p

Defaults: temperature 0.2, top_p 0.95

Benchmark tests: Arcee AI: AFM 4.5B

We ran this model against a few representative prompts to show its range. Review the outputs below and be the judge.

Text

Prompt:

Write 150 words on how AI might positively upend work, leisure and creativity

AI's positive upend of work, leisure, and creativity: 1. Enhanced productivity: AI automates repetitive tasks, allowing humans to focus on higher-value work and innovation. 2. Personalized learning: AI tailors education and skill development to individual needs, fostering lifelong learning. 3. Creative collaboration: AI tools augment human creativity, enabling new forms of art, music, and design. 4. Work-life balance: Automation frees up time for leisure and personal pursuits. 5. Remote work revolution: AI-powered communication and collaboration tools enable global, flexible work arrangements. 6. Leisure enrichment: AI recommends personalized entertainment, travel experiences, and hobbies. 7. Creative exploration: AI generates ideas and prototypes, sparking new creative endeavors. 8. Knowledge democratization: AI makes information and expertise more accessible to all. 9. Health and wellness: AI-driven fitness and mental health tools improve quality of life. 10. Environmental sustainability: AI optimizes resource use and supports green initiatives. 11. Cultural exchange: AI facilitates cross-cultural understanding and global connections. 12. Entrepreneurship: AI lowers barriers to entry for new business ventures. 13. Skill development: AI provides personalized training and skill acquisition opportunities. 14. Artistic expression: AI creates new artistic mediums and expands creative possibilities. 15. Social innovation: AI-driven solutions address complex societal challenges. This transformation creates a more balanced, creative, and fulfilling human experience across all aspects of life.

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up.end

/ˌəpˈend/

verb

To “upend” means to completely disrupt, overturn, or drastically change the established order or structure of something. It implies a significant shift or alteration that can potentially have far-reaching consequences. When something is upended, it is turned upside down or transformed in a way that challenges conventional norms or expectations. The term often carries a sense of innovation, transformation, and sometimes even a hint of upheaval, indicating that the changes are not just minor adjustments but rather a fundamental reimagining of the status quo.

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