Cheapest GPU for Kimi K3
GB300 NVL72 is the cheapest at $0.080 per million tokens, 23% below B300.
Measured on the AgentX agentic coding workload at a matched interactivity target of 50 tokens/s per user. Hardware without a measurement at this operating point is not ranked.
| Rank | GPU | Tokens/s per GPU | $ / 1M tokens | Precision | Engine |
|---|---|---|---|---|---|
| 1 | GB300 NVL72 | 8,047 | $0.080 | fp4 | Dynamo vLLM |
| 2 | B300 | 6,083 | $0.10 | fp4 | vLLM |
| 3 | GB200 NVL72 | 4,579 | $0.11 | fp4 | Dynamo vLLM |
| 4 | B200 | 3,976 | $0.12 | fp4 | Dynamo vLLM |
| 5 | MI355X | 1,622 | $0.26 | fp4 | vLLM |
Optimizing for speed instead of cost? See the fastest GPU for Kimi K3
Methodology
Every number on this page is a measurement, not a spec-sheet estimate. The InferenceX fleet serves Kimi K3 on real hardware with community serving engines, sweeping concurrency to trace each platform's throughput-versus-interactivity frontier.
Platforms are then read at the same operating point (50 tokens/s per user) so the comparison is iso-interactivity: a GPU cannot win by quoting throughput at an unusably slow per-user speed. Cost converts measured throughput to $ per million total tokens using $/GPU/hr rates from the SemiAnalysis AI Cloud TCO model.
The derivation is shared with the InferenceX overview leaderboard, and results re-run continuously, so this ranking updates as new engine releases and configs land.
Frequently asked questions
- What is the cheapest GPU to run Kimi K3?
- As of the latest benchmark runs, GB300 NVL72 is cheapest at $0.080 per million total tokens on the AgentX agentic coding workload, at hyperscaler $/GPU/hr pricing and a matched interactivity target of 50 tokens/s per user.
- How is cost per million tokens calculated?
- Measured throughput per GPU at the 50 tokens/s per user tier is converted to $ per million total (input plus output) tokens using hyperscaler $/GPU/hr rates from the SemiAnalysis AI Cloud TCO model. Slower interactivity targets or cheaper rental tiers change the absolute numbers but rarely the order.
- How often is this ranking updated?
- Benchmarks re-run continuously on the InferenceX cluster fleet; the newest result feeding this ranking landed on 2026-08-21. The page always renders the latest data.