Name: Grok 4.5
Author: xAI

Question 1

What does this Grok 4.5 vs MiMo-V2.5-Pro comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: Grok 4.5 or MiMo-V2.5-Pro?

Accepted Answer

Grok 4.5 lists $2.00 input and $6.00 output per 1M tokens. MiMo-V2.5-Pro lists $0.435 input and $0.87 output. The cheaper workload depends on the mix of input and output. Long-context tiers, caching, batch processing and retries can change the bill.

Question 3

Which has the larger context window: Grok 4.5 or MiMo-V2.5-Pro?

Accepted Answer

Grok 4.5 lists 500K tokens and MiMo-V2.5-Pro lists 1.05M. MiMo-V2.5-Pro therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Grok 4.5 or MiMo-V2.5-Pro?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do Grok 4.5 and MiMo-V2.5-Pro support?

Accepted Answer

Grok 4.5 records text, image input and text output. MiMo-V2.5-Pro records text input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose Grok 4.5 or MiMo-V2.5-Pro?

Accepted Answer

Consider Grok 4.5 if you need larger maximum output. Consider MiMo-V2.5-Pro if you need larger context or a lower listed input rate or a lower listed output rate. MiMo-V2.5-Pro offers downloadable weights; Grok 4.5 is listed as a proprietary model. Compare licence terms and operating costs before choosing a deployment. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	Grok 4.5	MiMo-V2.5-Pro
Provider	xAI	Xiaomi
Listed pricing route	xAI	Xiaomi
Model family	grok	mimo
Accepted inputs	text, image	text
Produced outputs	text	text
Context window	500K	1.05MHigher
Max output	500KHigher	131.07K
Input price / 1M	$2.00	$0.435Lower
Output price / 1M	$6.00	$0.87Lower
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Documented	Not documented
Audio input	Not documented	Not documented
Structured output	Documented	Not documented
License	Proprietary	Open weights

Grok 4.5 vs MiMo-V2.5-Pro

Grok 4.5

MiMo-V2.5-Pro

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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