AFM 4.5B vs Amber
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| AFM 4.5B | Amber | |
|---|---|---|
| Parameters | 4.6B | 6.7B |
| Context | 66K | 2K |
| Architecture | ArceeForCausalLM | LlamaForCausalLM |
| License | Apache 2.0 | Apache 2.0 |
| Downloads | 1.5K | 53.0K |
| Released | Sep 2025 | Oct 2025 |
VRAM by Quantization: AFM 4.5B vs Amber
| Quantization | Bits | AFM 4.5B VRAM | Amber VRAM |
|---|---|---|---|
| BF16 | 16.00 | 9.7 GB | 14.8 GB |
Verdict
AFM 4.5B needs less VRAM at BF16 (9.7 GB vs 14.8 GB), so it fits on smaller GPUs. AFM 4.5B supports a longer context window (66K tokens). Amber is the more widely downloaded of the two.
Frequently Asked Questions
- Which needs less VRAM, AFM 4.5B or Amber?
At BF16, AFM 4.5B needs 9.7 GB and Amber needs 14.8 GB, so AFM 4.5B is the lighter option to run locally.
- Which has a longer context window, AFM 4.5B or Amber?
AFM 4.5B supports 65,536 tokens and Amber supports 2,048 tokens.
- What is the difference between AFM 4.5B and Amber?
AFM 4.5B is a 4.6B model from Arcee AI, while Amber is a 6.7B model from LLM360. Compare their VRAM requirements above to see which fits your GPU or Mac.