Head-to-head AI inference benchmark comparison of B300 (NVIDIA Blackwell) and GB300 NVL72 (NVIDIA Blackwell) on Qwen 3.8 Flash Next 176B-A6B. 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
Throughput at 62 tok/s/user on Qwen 3.8 Flash Next 176B-A6B: B300 hits 80846 tok/s/chip, GB300 NVL72 hits 102482. Per-million costs land at $0.01 and $0.01 respectively. GB300 NVL72 is 24% cheaper per token; GB300 NVL72 delivers 27% more tok/s/chip.
B300 / GB300 NVL72 on Qwen 3.8 Flash Next 176B-A6B at 102 tok/s/user: 70155 / 64956 tok/s/chip, $0.01 / $0.01 per million tokens. B300 is 10% cheaper per token; B300 delivers 8% more tok/s/chip.
Toward the upper edge of the 22β182 tok/s/user interactivity band, at 143 tok/s/user on Qwen 3.8 Flash Next 176B-A6B: B300 runs 49159 tok/s/chip at $0.01/M tokens, GB300 NVL72 runs 39715 at $0.02/M. B300 is 27% cheaper per token; B300 delivers 24% more tok/s/chip. (Numbers reflect the default agentic-traces Β· fp4 selection for this URL β table and chart below update if you change sequence, precision, or model in the controls.)
| Metric | Interactivity (tok/s/user) | Interactivity (tok/s/user) | Interactivity (tok/s/user) |
|---|---|---|---|
| Throughput (tok/s/chip) | B300:80846.0GB300 NVL72:102481.6 | B300:70155.0GB300 NVL72:64955.7 | B300:49159.2GB300 NVL72:39714.5 |
| Cost ($/M tok) | B300:$0.008GB300 NVL72:$0.006 | B300:$0.009GB300 NVL72:$0.010 | B300:$0.013GB300 NVL72:$0.016 |
| tok/s/MW | B300:42550528GB300 NVL72:48340379 | B300:36923688GB300 NVL72:30639461 | B300:25873248GB300 NVL72:18733260 |
| Concurrency | B300:~16GB300 NVL72:~21 | B300:~14GB300 NVL72:~13 | B300:~10GB300 NVL72:~8 |
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.
