Head-to-head AI inference benchmark comparison of H200 (NVIDIA Hopper) and MI355X (AMD CDNA 4) on DeepSeek V4.1 Flash 552B. Latency, throughput, and cost across LLM workloads. 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 →
H200 / MI355X on DeepSeek V4.1 Flash 552B at 19 tok/s/user: 19263 / 9485 tok/s/chip, $0.02 / $0.04 per million tokens. H200 is 150% cheaper per token; H200 delivers 103% more tok/s/chip.
Around the middle of the 14–35 tok/s/user interactivity band, at 24 tok/s/user on DeepSeek V4.1 Flash 552B: H200 runs 19139 tok/s/chip at $0.02/M tokens, MI355X runs 6984 at $0.06/M. H200 is 237% cheaper per token; H200 delivers 174% more tok/s/chip.
Setting 30 tok/s/user as the target on DeepSeek V4.1 Flash 552B, H200 produces 18899 tok/s/chip ($0.02 per million tokens) and MI355X produces 3578 ($0.12). H200 is 550% cheaper per token; H200 delivers 428% more tok/s/chip. (Numbers reflect the default agentic-traces · fp4 selection for this URL — table and chart below update if you change sequence, precision, or model in the controls.)
| Metric | Interactivity (tok/s/user) | Interactivity (tok/s/user) | Interactivity (tok/s/user) |
|---|---|---|---|
| Throughput (tok/s/chip) | H200:19262.6MI355X:9485.1 | H200:19139.1MI355X:6983.9 | H200:18899.5MI355X:3577.6 |
| Cost ($/M tok) | H200:$0.018MI355X:$0.044 | H200:$0.018MI355X:$0.060 | H200:$0.018MI355X:$0.116 |
| tok/s/MW | H200:14060308MI355X:4538332 | H200:13970161MI355X:3341561 | H200:13795237MI355X:1711792 |
| Concurrency | H200:~55MI355X:~17 | H200:~46MI355X:~10 | H200:~36MI355X:~5 |
Agentic inference metrics from the AgentX scenario and fixed-sequence inference metrics across models, hardware configurations, and serving parameters.
No measurements to plot for this selection. Review the benchmark controls above or adjust quick filters.
