Head-to-head AI inference benchmark comparison of H100 (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 β 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 β
Near the low end of the 43β303 tok/s/user interactivity band, at 108 tok/s/user on DeepSeek V4.1 Flash 552B: H100 runs 9248 tok/s/chip at $0.04/M tokens, MI355X runs 115298 at $0.00/M. MI355X is 872% cheaper per token; MI355X delivers 1147% more tok/s/chip.
Setting 173 tok/s/user as the target on DeepSeek V4.1 Flash 552B, H100 produces 6143 tok/s/chip ($0.05 per million tokens) and MI355X produces 78169 ($0.01). MI355X is 893% cheaper per token; MI355X delivers 1173% more tok/s/chip.
At 238 tok/s/user interactivity on DeepSeek V4.1 Flash 552B, H100 delivers 3968 tok/s/chip at $0.08 per million tokens; MI355X delivers 45535 tok/s/chip at $0.01. MI355X is 795% cheaper per token; MI355X delivers 1047% more tok/s/chip at this point. (Numbers reflect the default agentic-traces Β· fp4 selection for this URL β table and chart below update if you change sequence, precision, or model in the controls.)
| Metric | Interactivity (tok/s/user) | Interactivity (tok/s/user) | Interactivity (tok/s/user) |
|---|---|---|---|
| Throughput (tok/s/chip) | H100:9248.5MI355X:115297.8 | H100:6142.8MI355X:78169.0 | H100:3968.3MI355X:45535.3 |
| Cost ($/M tok) | H100:$0.035MI355X:$0.004 | H100:$0.053MI355X:$0.005 | H100:$0.082MI355X:$0.009 |
| tok/s/MW | H100:6750703MI355X:55166433 | H100:4483795MI355X:37401422 | H100:2896571MI355X:21787223 |
| Concurrency | H100:~12MI355X:~33 | H100:~7MI355X:~32 | H100:~4MI355X:~13 |
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.
