AI model comparison

Solar Pro 4 vs MiMo-V2.5

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window.

Input / 1M
$0.09
Output / 1M
$0.36
Context
524K
xiaomi logo

Xiaomi

MiMo-V2.5

MiMo-V2.5 is a native omnimodal model by Xiaomi.

Input / 1M
$0.14
Output / 1M
$0.28
Context
1.05M

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

upstage logo

Solar Pro 4

1.2x cheaper for a typical chat

Higher intelligence score

upstage logo

Solar Pro 4

28.2 vs 25.2 on Artificial Analysis

Larger context window

xiaomi logo

MiMo-V2.5

1.05M vs 524K tokens

Newer release

upstage logo

Solar Pro 4

Released August 10, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

upstage logoSolar Pro 428.2
xiaomi logoMiMo-V2.525.2

Coding index

upstage logoSolar Pro 452.7
xiaomi logoMiMo-V2.556.8

Agentic index

upstage logoSolar Pro 4Not available
xiaomi logoMiMo-V2.515.8

Pricing

Solar Pro 4 vs MiMo-V2.5 API pricing

Per-token API rates. Cheaper option highlighted.

Metricupstage logoSolar Pro 4xiaomi logoMiMo-V2.5
Input tokensPer 1M tokens$0.09$0.14
Output tokensPer 1M tokens$0.36$0.28
Cached input (read)Per 1M tokens$0.02$0.00
Cache writePer 1M tokensNot availableNot available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

upstage logoSolar Pro 4$0.36
xiaomi logoMiMo-V2.5$0.42

Coding task

30K in, 4K out

upstage logoSolar Pro 4$4.14$1.98 cached
xiaomi logoMiMo-V2.5$5.32$1.20 cached

Long document summary

150K in, 2K out

upstage logoSolar Pro 4$14.22$3.42 cached
xiaomi logoMiMo-V2.5$21.56$0.98 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricupstage logoSolar Pro 4xiaomi logoMiMo-V2.5
Context window524K tokens1.05M tokens
Max output131K tokens131K tokens
Input typesTextAudio, Image, Text, Video
Output typesTextText
Reasoning effort levelsMax, Extra high, High, Medium, Low, Minimal, NoneNot available
Default reasoning effortMediumNot available
Release dateAugust 10, 2026April 22, 2026

Features

Supported features

API features available for each model.

Metricupstage logoSolar Pro 4xiaomi logoMiMo-V2.5
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesNot supportedSupported
Deterministic seedNot supportedSupported
Verbosity controlNot supportedNot supported

Our take

Solar Pro 4 is 1.2x cheaper for a typical chat. Solar Pro 4 scores higher on the Artificial Analysis Intelligence Index (28.2 vs 25.2). MiMo-V2.5 has the larger context window (1.05M vs 524K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Solar Pro 4 or MiMo-V2.5 cheaper?

Solar Pro 4 is cheaper for a typical chat (2K input tokens and 500 output tokens). Solar Pro 4 costs $0.09 per 1M input tokens and $0.36 per 1M output tokens, while MiMo-V2.5 costs $0.14 per 1M input tokens and $0.28 per 1M output tokens.

Which has a bigger context window, Solar Pro 4 or MiMo-V2.5?

MiMo-V2.5 supports up to 1.05M tokens of context, compared with 524K for Solar Pro 4.

Is Solar Pro 4 smarter than MiMo-V2.5?

On the Artificial Analysis Intelligence Index, Solar Pro 4 scores 28.2 and MiMo-V2.5 scores 25.2, putting Solar Pro 4 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Solar Pro 4 and MiMo-V2.5 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Solar Pro 4 and MiMo-V2.5 answer side by side and keep the better response.

upstage logoxiaomi logo

Why choose? Ask both.

Send one prompt to Solar Pro 4 and MiMo-V2.5 at the same time. Compare the answers side by side and keep the best one.