Spark-X2.6 4B on Pi 5

Snapshot 2026-10-27 · ai-tier

Raspberry Pi 5 · 16 GB RAMAll performance measurements are for this device.

Capability shows how well the model answers the benchmark questions. Speed, response time and memory are measured on Raspberry Pi 5 · 16 GB.

Capability summarises instruction following, tool calling and finding information in long prompts. Speed and memory refer to the Raspberry Pi 5. — means unavailable.
Model	Capability / 100	Output tok/s	Prompt tok/s	First token · s	Task time · s	Peak memory · MiB	Parameters · B
Spark-X2.6 4BQ4_K_M · 4,096 context · reasoning off	83	2.5	19.2	23.8	114	5,938	4.1

Benchmark breakdown

Instruction following · IFEval	Tool calling · BFCL	Finding information · RULER
72	77	100

Test configuration

Model publisher: SparkLLM
Model parameters: 4.112 billion total
Published input support: text (metadata; not device validation)
Quantization: Q4_K_M
Context capacity: 4,096 tokens
Reasoning mode: off
CPU threads / parallel requests: 4 / 1
Temperature / seed: 0 / 42
Measurement date: 2026-10-21T00:08:09.980199+00:00
Result ID: split-989419d142d5f91cdfe6
Runtime revision: 620d2225cc436ab0b001e3200e590e3b286ef9ab
Artifact repository / revision: XHToken/Spark-X2.6-4B-GGUF / 16c77db5a782d75d6953770339f7ae06be7dd3f7
Artifact SHA256: d2595c12bbdda82929ac0c53ec1e79ebe98f74d92f85de2c829592e376815dca
Dataset revision: a0fc00b6a07455d1efb70cc19d5ca94c5923c5261a0b41095083a41a1592a1f6
Configuration identity: bb7a3e0441da45d9563dd0fb4676cd61b32c1cf023c2025f6c83b9341ca8407f

Measurement limits

Speed tests read 256 input tokens and generate 128 output tokens, repeated ten times. The output speed test starts without a long conversation history. Answer time uses six fixed prompts with up to 128 output tokens, repeated three times. First-text time is measured from the application making the request. Peak memory includes the loaded model; it excludes other applications on the device. Longer prompts may need more memory. Capability uses a fixed selection of public questions, rather than the full official benchmarks.

All Pi 5 measurements Methodology Publisher model card ↗Pinned engine source ↗

Measured 2026-10-21T00:08:09.980199+00:00.