Models

Grok 4.5 vs MiMo V2.6 Pro Ultraspeed

Compare Grok 4.5 from Grok and MiMo V2.6 Pro Ultraspeed from Xiaomi on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

GrokGrok 4.5XiaomiMiMo V2.6 Pro Ultraspeed
Grok logo
Grok 4.5
Grok · text, image → text

Grok 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.

Input$2 /M
Output$6 /M
Cache read$0.5 /M
Xiaomi logo
MiMo V2.6 Pro Ultraspeed
Xiaomi · text, image, audio, video → text

MiMo-V2.6-Pro-UltraSpeed combines the flagship performance of MiMo-V2.6-Pro and offers up to 20× output speed to serve highly real-time interactive and latency-sensitive production scenarios.

Input$4.8 /M
Output$9.6 /M
Cache read$0.0384 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Grok 4.5
MiMo V2.6 Pro Ultraspeed
Input /M
$2
$4.8
Output /M
$6
$9.6
Cache read /M
$0.5
$0.0384
Context length
500,000
1,000,000
Max output
500,000
0
Time to First Token
5.2 s
0.9 s
Throughput
37.2 tok/s
56.0 tok/s
Modalities
textimage
textimageaudiovideo
Supported Parameters
thinkingtoolsfunction callingstructured outputslong context
API Formats
Released
July 2026
September 22, 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

grok-4.5mimo-v2.6-pro-ultraspeed

Tokens / day

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Requests / day

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Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

grok-4.5mimo-v2.6-pro-ultraspeed

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

Grok 4.5
$210 /mo
MiMo V2.6 Pro Ultraspeed
$432 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Grok 4.5, MiMo V2.6 Pro Ultraspeed?

Grok 4.5: $6/M output tokens; MiMo V2.6 Pro Ultraspeed: $9.6/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

MiMo V2.6 Pro Ultraspeed: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Grok 4.5 accepts 500,000 and MiMo V2.6 Pro Ultraspeed accepts 1,000,000 input tokens.

Which one generates tokens faster?

MiMo V2.6 Pro Ultraspeed at 56.0 tok/s and Grok 4.5 at 37.2 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context; MiMo V2.6 Pro Ultraspeed accepts text, image, audio and video input.

Can I call Grok 4.5 and MiMo V2.6 Pro Ultraspeed with the same API key?

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.

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