Yes — Apertus 1.5 8B (8B) runs at 55 tok/s on M4 with 16 GB RAM using Q4_K_M quantization via Ollama. First token latency is 0.4s. A capable open-source LLM with 8B parameters.
Want to run Apertus 1.5 8B faster — or step up to bigger models? Find your Mac →The LLMCheck index estimates Apertus 1.5 8B on M4 using our published methodology: Q4_K_M quantization, memory-bandwidth scaling, and cross-referenced third-party benchmarks where available. Figures are transparent estimates — own this config? Submit a real benchmark →
| Metric | Value |
|---|---|
| Tokens per second | 55 tok/s |
| Time to first token | 0.4s |
| Quantization | Q4_K_M |
| Minimum RAM | 16 GB |
| Recommended engine | Ollama |
| Parameters | 8B |
| Benchmark date | 2026-08 |
Q4_K_M 8B Ollama M4
The recommended engine for Apertus 1.5 8B on M4 is Ollama. Install Ollama, then pull the model:
Ollama handles quantization automatically — it will download the Q4_K_M variant (~16 GB) and start an interactive chat session.
| Chip | Speed | First Token | Min RAM | Engine |
|---|---|---|---|---|
| M5 Max | 90 tok/s | 0.3s | 64 GB | MLX |
To run Apertus 1.5 8B on M4 you need:
Apertus 1.5 8B needs about 16 GB of unified memory. These current Apple Silicon Macs have the headroom to run it comfortably:
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See how Apertus 1.5 8B stacks up against other models on your specific Mac hardware.
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