GLM 4.7 Flash Ultimate Irrefusable Heretic vs GLM 4.5 Air
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| GLM 4.7 Flash Ultimate Irrefusable Heretic | GLM 4.5 Air | |
|---|---|---|
| Parameters | 29.9B | 110.5B |
| Context | 203K | 131K |
| Architecture | Glm4MoeLiteForCausalLM | Glm4MoeForCausalLM |
| License | MIT | MIT |
| Downloads | 125 | 359.8K |
| Released | Mar 2026 | Aug 2025 |
VRAM by Quantization: GLM 4.7 Flash Ultimate Irrefusable Heretic vs GLM 4.5 Air
| Quantization | Bits | GLM 4.7 Flash Ultimate Irrefusable Heretic VRAM | GLM 4.5 Air VRAM |
|---|---|---|---|
| Q2_K | 3.40 | 13.8 GB | 47.4 GB |
| Q3_K_M | 3.90 | 15.7 GB | 54.3 GB |
| Q3_K_S | 3.50 | 14.2 GB | 48.8 GB |
| Q4_0 | 4.00 | 16.1 GB | 55.7 GB |
| Q4_K_M | 4.80 | 19.1 GB | 66.7 GB |
| Q5_K_M | 5.70 | 22.4 GB | 79.1 GB |
| Q6_K | 6.60 | 25.8 GB | 91.6 GB |
| Q8_0 | 8.00 | 31.0 GB | 110.9 GB |
Verdict
GLM 4.7 Flash Ultimate Irrefusable Heretic needs less VRAM at Q4_K_M (19.1 GB vs 66.7 GB), so it fits on smaller GPUs. GLM 4.7 Flash Ultimate Irrefusable Heretic supports a longer context window (203K tokens). GLM 4.5 Air is the more widely downloaded of the two.
Frequently Asked Questions
- Which needs less VRAM, GLM 4.7 Flash Ultimate Irrefusable Heretic or GLM 4.5 Air?
At Q4_K_M, GLM 4.7 Flash Ultimate Irrefusable Heretic needs 19.1 GB and GLM 4.5 Air needs 66.7 GB, so GLM 4.7 Flash Ultimate Irrefusable Heretic is the lighter option to run locally.
- Which has a longer context window, GLM 4.7 Flash Ultimate Irrefusable Heretic or GLM 4.5 Air?
GLM 4.7 Flash Ultimate Irrefusable Heretic supports 202,752 tokens and GLM 4.5 Air supports 131,072 tokens.
- What is the difference between GLM 4.7 Flash Ultimate Irrefusable Heretic and GLM 4.5 Air?
GLM 4.7 Flash Ultimate Irrefusable Heretic is a 29.9B model from llmfan46 (GLM family), while GLM 4.5 Air is a 110.5B model from zai-org (GLM family). Compare their VRAM requirements above to see which fits your GPU or Mac.