Muse Spark Open 816B — MI355X vs Vera Rubin NVL72 Performance per Dollar
Cost per million tokens of MI355X (AMD CDNA 4) versus Vera Rubin NVL72 (NVIDIA Vera Rubin) on Muse Spark Open 816B. 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 →
At 197 tok/s/user on Muse Spark Open 816B, MI355X costs $0.03 per million tokens; Vera Rubin NVL72 costs $0.01. Vera Rubin NVL72 is 131% more cost-efficient at this operating point.
Vera Rubin NVL72 edges MI355X at 288 tok/s/user on Muse Spark Open 816B — $0.02 per million tokens versus $0.04, a 108% cost-per-token gap.
Push Muse Spark Open 816B to 379 tok/s/user and MI355X lands at $0.09 per million tokens against Vera Rubin NVL72's $0.02 — Vera Rubin NVL72 pulls ahead by 334%. (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): MI355X $1.50/chip/hr · Vera Rubin NVL72 $3.61/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 | MI355X:$0.028Vera Rubin NVL72:$0.012 | MI355X:$0.035Vera Rubin NVL72:$0.017 | MI355X:$0.094Vera Rubin NVL72:$0.022 |
| Concurrency | MI355X:~10Vera Rubin NVL72:~47 | MI355X:~12Vera Rubin NVL72:~30 | MI355X:~4Vera Rubin NVL72:~24 |