MiniMax M3 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 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 →
On MiniMax M3 428B at 159 tok/s/user, the per-million math comes out to $0.02 for GB300 NVL72 and $0.01 for MI355X; MI355X delivers 95% more total tokens per dollar.
At 218 tok/s/user on MiniMax M3 428B, GB300 NVL72 costs $0.03 per million tokens; MI355X costs $0.02. MI355X is 66% more cost-efficient at this operating point.
MI355X edges GB300 NVL72 at 277 tok/s/user on MiniMax M3 428B — $0.02 per million tokens versus $0.05, a 107% cost-per-token gap. (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:$0.020MI355X:$0.010 | GB300 NVL72:$0.029MI355X:$0.018 | GB300 NVL72:$0.049MI355X:$0.024 |
| Concurrency | GB300 NVL72:~29MI355X:~22 | GB300 NVL72:~20MI355X:~15 | GB300 NVL72:~24MI355X:~10 |