Qwen3.5-4B

Qwen family · 4.0B params

Evidence: 1 sourced run · 1 independent source · first recorded Aug 18, 2026. What these labels mean.

What the Qwen3.5-4B numbers mean

The fastest verified result on our board is 78.6 output tok/s on an RTX 3060 at Q4_K_M with a 32768-token context. That is about 12.7 ms per generated token — 500 tokens takes roughly 6.4 seconds. Prompt processing on the same record runs at 2111.9 tok/s, so a 2,000-token prompt is read in about 0.9 seconds. Peak VRAM was measured at 3.5 GB.

How much VRAM does Qwen3.5-4B need?

Qwen3.5-4B has 4.0B parameters. These estimates use the same formula as the VRAM calculator: weights, plus about 15% for a moderate-context KV cache and runtime overhead, plus a small engine floor.

Long contexts and large batches raise the real number — read the smallest card as "possible with a reduced context". Measured throughput is on the benchmark board.

Models with a similar footprint

Ranked by distance from Qwen3.5-4B's parameter count. Full benchmark board.

All benchmarks Methodology