Encoder comparison

Recorded run: enc-2026-10-30-amd (2026-10-30). Raw results · Environment · Run analysis.

Median compression speed and size relative to C

All eight datasets contribute equally to each median, including empty and tiny input. For each dataset, speed / C = C mean latency / implementation mean latency; output / C = implementation bytes / C bytes. Medians are taken over those ratios. Qualities are ordered by mbrotli median speed / C, highest first. Burli supports q0–q5 only.

Quality	mbrotli speed / C ↑	mbrotli output / C ↓	Datasets
Quality 9	4.323×	1.000×	8
Quality 11	1.493×	1.000×	8
Quality 0	1.349×	1.000×	8
Quality 10	1.243×	1.000×	8
Quality 4	1.183×	1.000×	8
Quality 1	1.123×	1.000×	8
Quality 3	1.089×	1.000×	8
Quality 8	1.022×	1.000×	8
Quality 2	1.020×	1.000×	8
Quality 5	1.017×	1.000×	8
Quality 6	1.008×	1.000×	8
Quality 7	1.004×	1.000×	8