MI355X: FP4 vs FP8 Precision Comparison

FP4 posts 5005 tok/s/chip for $0.08 per million tokens at 42 tok/s/user on MiniMax M2.5/M2.7 (MI355X); FP8 posts 3180 tok/s/chip for $0.13. FP4 is 57% cheaper per token; FP4 delivers 57% more tok/s/chip. Quantization-level accuracy differences are tracked on the evaluation tab.

Throughput at 68 tok/s/user on MiniMax M2.5/M2.7 (MI355X): FP4 hits 2238 tok/s/chip, FP8 hits 1185. Per-million costs land at $0.19 and $0.35 respectively. FP4 is 89% cheaper per token; FP4 delivers 89% more tok/s/chip. The cost-throughput tradeoff from lower precision is only part of the picture — see the evaluation page for accuracy data.

Toward the upper edge of the 16–119 tok/s/user interactivity band, at 93 tok/s/user on MiniMax M2.5/M2.7 (MI355X): FP4 runs 1214 tok/s/chip at $0.34/M tokens, FP8 runs 568 at $0.73/M. FP4 is 114% cheaper per token; FP4 delivers 114% more tok/s/chip. Precision changes affect both inference speed and model quality — consult the evaluation tab for accuracy benchmarks. (Numbers reflect the default 1k/1k selection for this URL — table and chart below update if you change sequence or model in the controls. Each side uses the best available serving configuration for that precision, which may include speculative decoding such as MTP where recipes exist — the same convention as the other comparison pages.)