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  5. Gemini 1.5 ProvsSolar Mini 4
Updated Sep 2026

Gemini 1.5 ProvsSolar Mini 4

Solar Mini 4 is cheaper than Gemini 1.5 Pro at $0.05/M vs $3.5/M input tokens.

Gemini 1.5 Pro and Solar Mini 4 compared across 1 shared prompts
SpecGemini 1.5 ProSolar Mini 4
Input price$3.5/M tokens$0.05/M tokens
Output price$10.5/M tokens$0.2/M tokens
Context window1.0M tokens524K tokens
Free API (OpenRouter)NoNo
ReleasedFeb 2024Sep 2026
Our Verdict
Gemini 1.5 Pro
Gemini 1.5 Pro
Solar Mini 4
Solar Mini 4Runner-up

Not enough votes to call it. On the specs, Gemini 1.5 Pro has the edge: bigger model tier, bigger context window, major provider backing.

Solar Mini 4 costs 53x less per token.

Too close to call
API pricing

Cost per 1M tokens

Gemini 1.5 Pro
Input
$3.50
Output
$10.50
Solar Mini 4
Input
$0.05
70× cheaper
Output
$0.20
53× cheaper

Solar Mini 4 is cheaper on both: 70× input, 53× output.

Where to run it

1 host

Gemini 1.5 Pro

No hosts listed on OpenRouter.

Solar Mini 41 host
HostInOutContextUptime
UUpstage$0.05 in·$0.20 out·524k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Gemini 1.5 Pro is developed by Google AI while Solar Mini 4 is developed by Upstage. Gemini 1.5 Pro has a 1.0M token context window vs Solar Mini 4's 524K. You can compare their actual outputs across 1 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemini 1.5 Pro and Solar Mini 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 1 challenges so you can judge which fits your needs best.

Gemini 1.5 Pro costs $3.5/M input tokens and Solar Mini 4 costs $0.05/M input tokens. Solar Mini 4 is $3.45/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 Gemini 1.5 Pro and Solar Mini 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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Gemini 1.5 Pro20 outputs, specs and price
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