Output tokens cost $6.00 per million on Grok 4.5 and $0.31 per million on Xiaomi Mimo V2.5. Input tokens cost $2.00 per million on Grok 4.5 and $0.16 per million on Xiaomi Mimo V2.5. Cached input tokens are billed at $0.50 per million on Grok 4.5 and $0.00 per million on Xiaomi Mimo V2.5. Context lengths are 500,000 tokens on Grok 4.5 and 256,000 tokens on Xiaomi Mimo V2.5. Time to first token (TTFT) measured on AIHubMix is 1.7s on Grok 4.5 and 1.7s on Xiaomi Mimo V2.5. Measured output throughput is 25.3 tok/s on Grok 4.5 and 41.3 tok/s on Xiaomi Mimo V2.5. On the LMArena coding leaderboard Grok 4.5 scores 1523 and Xiaomi Mimo V2.5 scores 1491.
Grok 4.5
Xiaomi Mimo V2.5Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.
MiMo-V2.5 is a native, fully multimodal large model designed for agent scenarios; it can see, hear, and read, and translate understanding into action. It has over 1 trillion total parameters (42B active parameters), employs an innovative hybrid-attention architecture, and supports an ultra-long 1M context length. Built on a powerful model base, we continuously scale compute across broader agent scenarios, further expanding the agent’s action space and achieving an important generalization from coding to claw.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Xiaomi Mimo V2.5: $0.31/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.
Grok 4.5: 1523; Xiaomi Mimo V2.5: 1491 (LMArena coding leaderboard).
Grok 4.5: 1.7s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Grok 4.5 accepts 500,000 and Xiaomi Mimo V2.5 accepts 256,000 input tokens.
Xiaomi Mimo V2.5 at 41.3 tok/s and Grok 4.5 at 25.3 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context; Xiaomi Mimo V2.5 accepts text, image, video and audio input and supports web search.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
Related model match-ups readers also look at.
AIHubMix