Kimi K3.1 Pro — GB300 NVL72 vs MI355X Performance per Dollar
Cost per million tokens of GB300 NVL72 (NVIDIA Blackwell) versus MI355X (AMD CDNA 4) on Kimi K3.1 Pro. 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 →
Push Kimi K3.1 Pro to 90 tok/s/user and GB300 NVL72 lands at $0.03 per million tokens against MI355X's $0.08 — GB300 NVL72 pulls ahead by 154%.
GB300 NVL72: $0.05 per million tokens. MI355X: $0.12. Both at 118 tok/s/user on Kimi K3.1 Pro, with GB300 NVL72 153% cheaper.
Toward the upper edge of the 62–175 tok/s/user interactivity band — at 147 tok/s/user — GB300 NVL72 runs $0.07 per million tokens on Kimi K3.1 Pro while MI355X runs $0.16. GB300 NVL72 is the cheaper choice by 146%. (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:$0.032MI355X:$0.080 | GB300 NVL72:$0.048MI355X:$0.123 | GB300 NVL72:$0.067MI355X:$0.164 |
| Concurrency | GB300 NVL72:~101MI355X:~8 | GB300 NVL72:~64MI355X:~5 | GB300 NVL72:~47MI355X:~3 |