Solar Pro 4 is cheaper than Gemini 2.5 Flash Preview 05-20 (thinking) at $0.09/M vs $0.15/M input tokens.
Pokémon battle screen you can actually click. One HTML file.
Which answer wins?
Three minutes of stand-up. Puns are banned.
Gemini 2.5 Flash Preview 05-20 (thinking): (Lights up on a stage. Comedian walks to center, adjusts mic, smiles warmly.) \"Alright, alright, settle down you crazy people! Thanks for having me. (Pause fo r applause/laughter) You know, I was scrolling through Instagram earlier, and it\'s just a constant ba rrage of people \'living thei r best life,\' isn\'t it?
Solar Pro 4: I’ve come to a realization about adulthood: none of us actually know what we’re doing. We’re just all really good at pretending we have a system. Take the group dinner text. You know the one. Someone drops, “Hey, what do you want to eat?” And suddenly, five adults turn into a parliamentary session.
Five jokes on demand, then count how many were actually different.
Gemini 2.5 Flash Preview 05-20 (thinking): Here are 5 jokes: Why don\'t scientists trust atoms? Because they make up everything! What do you call a fake noodle? An impasta! Why did the scarecrow win an award? Because he was outstanding in his field! I told my wife she was drawing her eyebrows too high. She looked surprised.
Solar Pro 4: Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why don't scientists trust atoms? Because they make up everything. What do you call a bear with no teeth? A gummy bear. Why did the bicycle fall over? Because it was two-tired.
| Spec | ||
|---|---|---|
| Input price | $0.15/M tokens | $0.09/M tokens |
| Output price | $3.5/M tokens | $0.36/M tokens |
| Context window | 1.0M tokens | 524K tokens |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Aug 2026 |
| At 10M a month | $1.50 | $0.90 |
Input tokens at list price. No caching, no batch discount.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 6 Oct 2026.
Gemini 2.5 Flash Preview 05-20 (thinking) is developed by Google AI while Solar Pro 4 is developed by Upstage. Gemini 2.5 Flash Preview 05-20 (thinking) has a 1.0M token context window vs Solar Pro 4's 524K. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
It depends on your use case. Gemini 2.5 Flash Preview 05-20 (thinking) and Solar Pro 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.
Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens and Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $0.06/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 2.5 Flash Preview 05-20 (thinking) 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.