Kimi K3 2.8T · Performance per dollar
Kimi K3 2.8T — GB200 NVL72 vs MI355X performance per dollar
Cost per million tokens of GB200 NVL72 (NVIDIA Blackwell) versus MI355X (AMD CDNA 4) on Kimi K3 2.8T. 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 →
MI355X edges GB200 NVL72 at 71 tok/s/user on Kimi K3 2.8T — $0.050 per million tokens versus $0.068, a 26% lower cost per token.
Push Kimi K3 2.8T to 118 tok/s/user and GB200 NVL72 lands at $0.16 per million tokens against MI355X's $0.14 — MI355X costs 16% less.
GB200 NVL72: $0.22 per million tokens. MI355X: $0.15. Both at 165 tok/s/user on Kimi K3 2.8T, with MI355X 31% cheaper. (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): GB200 NVL72 $1.86/chip/hr · MI355X $1.50/chip/hr. Source: SemiAnalysis Market July 2026 Pricing Surveys & AI Cloud TCO Model.
Interpolated from real benchmark data. Edit target interactivity values below to compare at different operating points.
| Metric | Interactivity (tok/s/user) | Interactivity (tok/s/user) | Interactivity (tok/s/user) |
|---|---|---|---|
| Dollars per million tokens | GB200 NVL72$0.068MI355X$0.050 | GB200 NVL72$0.16MI355X$0.14 | GB200 NVL72$0.22MI355X$0.15 |
| Concurrency | GB200 NVL72~38MI355X~44 | GB200 NVL72~8MI355X~7 | GB200 NVL72~8MI355X~4 |
