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Sponsored by
APIMart
arcee-ai / AFM-4.5B-GGUF
Model's Last Updated: September 18 2025
Introduction of AFM-4.5B-GGUF
Model Details of AFM-4.5B-GGUF
AFM-4.5B-GGUF
AFM-4.5B is a 4.5 billion parameter instruction-tuned model developed by Arcee.ai, designed for enterprise-grade performance across diverse deployment environments from cloud to edge. The base model was trained on a dataset of 8 trillion tokens, comprising 6.5 trillion tokens of general pretraining data followed by 1.5 trillion tokens of midtraining data with enhanced focus on mathematical reasoning and code generation. Following pretraining, the model underwent supervised fine-tuning on high-quality instruction datasets. The instruction-tuned model was further refined through reinforcement learning on verifiable rewards as well as for human preference. We use a modified version of TorchTitan for pretraining, Axolotl for supervised fine-tuning, and a modified version of Verifiers for reinforcement learning.
The development of AFM-4.5B prioritized data quality as a fundamental requirement for achieving robust model performance. We collaborated with DatologyAI, a company specializing in large-scale data curation. DatologyAI's curation pipeline integrates a suite of proprietary algorithms—model-based quality filtering, embedding-based curation, target distribution-matching, source mixing, and synthetic data. Their expertise enabled the creation of a curated dataset tailored to support strong real-world performance.
The model architecture follows a standard transformer decoder-only design based on Vaswani et al., incorporating several key modifications for enhanced performance and efficiency. Notable architectural features include grouped query attention for improved inference efficiency and ReLU^2 activation functions instead of SwiGLU to enable sparsification while maintaining or exceeding performance benchmarks.
The model available in this repo is the instruct model following supervised fine-tuning and reinforcement learning.
Model Details
- Model Architecture: ArceeForCausalLM
- Parameters: 4.5B
- Training Tokens: 8T
- License: Arcee Model License (AML)
-
Key Features:
- Built-in support for function calling and agentic reasoning.
- Strong multilingual performance (English, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Korean, and Mandarin).
Benchmarks
License
AFM-4.5B is released under the Arcee Model License . If your company makes less than $1.75 million in annual revenue, you’re free to use the model for commercial purposes, as long as you’re not providing the weights to a company above that threshold. If your product or application using AFM-4.5B is sold to a larger company, that’s fine—as long as they don’t receive or run the weights directly.
We want as many developers, researchers, and builders as possible to benefit from AFM-4.5B. At the same time, this license ensures that we can continue to develop and support the model for the community.
Runs of arcee-ai AFM-4.5B-GGUF on huggingface.co
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More Information About AFM-4.5B-GGUF huggingface.co Model
Url of AFM-4.5B-GGUF
AFM-4.5B-GGUF huggingface.co Url
Provider of AFM-4.5B-GGUF huggingface.co
Other API from arcee-ai
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