MiniMax M3.1 Flash 428B — GB300 NVL72 vs MI355X Performance per Dollar
Cost per million tokens of GB300 NVL72 (NVIDIA Blackwell) versus MI355X (AMD CDNA 4) on MiniMax M3.1 Flash 428B. Large-hyperscaler-volume ownership TCO normalized by total tokens — performance per dollar across LLM workloads. Pick the more cost-efficient SKU at every target interactivity level. Use the chart controls below to switch sequences, precisions, and metrics — same interactions as the main inference chart.
AgentX replays real coding-agent sessions rather than fixed-length prompts, so context grows turn over turn and most of each request is served from cache instead of being recomputed. That turns the comparison into a systems question: KV transfer between nodes, prefix-aware routing, and cache capacity all move the curve alongside raw chip throughput. Fixed-sequence workloads stay the clean baseline for kernel and silicon performance, so the two scenarios answer different questions about the same hardware. Learn more about AgentX →
Near the low end of the 34–531 tok/s/user interactivity band — at 158 tok/s/user — GB300 NVL72 runs $0.01 per million tokens on MiniMax M3.1 Flash 428B while MI355X runs $0.02. GB300 NVL72 is the cheaper choice by 60%.
Cost-per-million is essentially even between GB300 NVL72 ($0.03) and MI355X ($0.03) at 283 tok/s/user on MiniMax M3.1 Flash 428B.
At 407 tok/s/user on MiniMax M3.1 Flash 428B, GB300 NVL72 costs $0.05 per million tokens; MI355X costs $0.06. GB300 NVL72 is 6% more cost-efficient at this operating point. (Numbers reflect the default agentic-traces · fp4 selection for this URL — table and chart below update if you change sequence, precision, or model in the controls.)
Chip pricing (owning hyperscaler): GB300 NVL72 $2.31/chip/hr · MI355X $1.50/chip/hr. Source: SemiAnalysis Market July 2026 Pricing Surveys & AI Cloud TCO Model.
| Metric | Interactivity (tok/s/user) | Interactivity (tok/s/user) | Interactivity (tok/s/user) |
|---|---|---|---|
| Dollar per Million Tokens | GB300 NVL72:$0.011MI355X:$0.018 | GB300 NVL72:$0.031MI355X:$0.031 | GB300 NVL72:$0.053MI355X:$0.056 |
| Concurrency | GB300 NVL72:~31MI355X:~14 | GB300 NVL72:~11MI355X:~7 | GB300 NVL72:~6MI355X:~3 |
Inference Performance
Agentic inference metrics from the AgentX scenario and fixed-sequence inference metrics across models, hardware configurations, and serving parameters.
No data available
No measurements to plot for this selection. Review the benchmark controls above or adjust quick filters.