Running DeepSeek V4 Pro on MI355X
Quick answer
DeepSeek V4 Pro sustains 23,751 tokens/s per GPU on MI355X at 50 tokens/s per user, which works out to $0.018 per million tokens at hyperscaler pricing, served by SGLang. Fastest measured TTFT: 0.1 ms; fastest TPOT: 0.0 ms (each the best across all configs, not one run).
Benchmarked configs
236
Serving engines
ATOM¹, MoRI SGLang, Mooncake ATOMesh¹, SGLang, vLLM
Precisions
fp4, fp8
Run dates
2026-04-25 → 2026-09-16
Throughput at every interactivity target
Serving is a trade-off: push more concurrent users through a GPU and each user's tokens arrive slower. The ladder below reads the measured frontier at each per-user speed target on the AgentX agentic coding workload, using the best engine and precision at that point.
| Per-user target | Tokens/s per GPU | $ / 1M tokens | Engine | Precision |
|---|---|---|---|---|
| 30 tok/s | 33,667 | $0.012 | SGLang | fp4 |
| 50 tok/s | 23,751 | $0.018 | SGLang | fp4 |
| 75 tok/s | 5,565 | $0.075 | vLLM | fp4 |
| 100 tok/s | 10,635 | $0.039 | SGLang | fp4 |
| 150 tok/s | 4,898 | $0.085 | SGLang | fp4 |
| 200 tok/s | 2,020 | $0.21 | SGLang | fp4 |
What serving actually costs
Converting the 50 tokens/s per user operating point to $ per million total tokens across rental pricing tiers from the SemiAnalysis AI Cloud TCO model.
| Pricing tier | $ / GPU / hr | $ / 1M tokens |
|---|---|---|
| Owning at Large Hyperscaler Volume | $1.50 | $0.018 |
| Retail | $2.90 | $0.034 |
Frequently asked questions
- How fast is DeepSeek V4 Pro on MI355X?
- At an interactivity target of 50 tokens/s per user on the AgentX agentic coding workload, MI355X sustains 23,751 tokens/s per GPU serving DeepSeek V4 Pro with SGLang in FP4. Peak measured throughput across all configs is 52,737 tokens/s per GPU.
- How much does it cost to serve DeepSeek V4 Pro on MI355X?
- $0.018 per million total tokens at large-hyperscaler-volume ownership $/GPU/hr pricing, at 50 tokens/s per user. The retail rental tier is tabulated above; slower interactivity targets lower the cost further.
- Which serving engines run DeepSeek V4 Pro on MI355X?
- The runs behind this page used ATOM¹, MoRI SGLang, Mooncake ATOMesh¹, SGLang, vLLM in FP4, FP8, including disaggregated prefill and multi-node serving. Engines are rebuilt and re-benchmarked continuously, so the best config can change between visits.
- How are these DeepSeek V4 Pro numbers measured?
- Every number is measured on real MI355X hardware by the InferenceX fleet, sweeping concurrency on the AgentX agentic coding workload to trace the throughput-versus-interactivity frontier; the newest run landed on 2026-09-16. The same derivation powers the InferenceX overview leaderboard.