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  5. Grok 3 Mini BetavsSolar Pro 4
Updated Aug 2026

Grok 3 Mini BetavsSolar Pro 4

Solar Pro 4 is cheaper than Grok 3 Mini Beta at $0.09/M vs $0.4/M input tokens.

Grok 3 Mini Beta and Solar Pro 4 compared across 5 shared prompts
SpecGrok 3 Mini BetaSolar Pro 4
Input price$0.4/M tokens$0.09/M tokens
Output price$0.8/M tokens$0.36/M tokens
Context window131K tokens524K tokens
Free API (OpenRouter)NoNo
ReleasedApr 2025Aug 2026
Our Verdict
Solar Pro 4
Solar Pro 4
Grok 3 Mini Beta
Grok 3 Mini BetaRunner-up

Not enough votes to call it. On the specs, Solar Pro 4 has the edge: bigger model tier, newer, bigger context window.

Too close to call
API pricing

Cost per 1M tokens

Grok 3 Mini Beta
Input
$0.40
Output
$0.80
Solar Pro 4
Input
$0.09
4.4× cheaper
Output
$0.36
2.2× cheaper

Solar Pro 4 is cheaper on both: 4.4× input, 2.2× output.

Where to run it

1 host

Grok 3 Mini Beta

No hosts listed on OpenRouter.

Solar Pro 41 host
HostInOutContextUptime
UUpstage$0.09 in·$0.36 out·524k·99.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Grok 3 Mini Beta is developed by xAI while Solar Pro 4 is developed by Upstage. Grok 3 Mini Beta has a 131K token context window vs Solar Pro 4's 524K. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok 3 Mini Beta and Solar Pro 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.

Grok 3 Mini Beta costs $0.4/M input tokens and Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $0.31/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Grok 3 Mini Beta and Solar Pro 4 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

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Model pages

Grok 3 Mini Beta logo
Grok 3 Mini Beta13 outputs, specs and price
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Solar Pro 414 outputs, specs and price
Rival
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Explore all of Rival

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