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  5. Gemini 3.6 FlashvsSolar Pro 4
Updated Aug 2026

Gemini 3.6 FlashvsSolar Pro 4

Solar Pro 4 is cheaper than Gemini 3.6 Flash at $0.09/M vs $1.5/M input tokens.

Gemini 3.6 Flash and Solar Pro 4 compared across 14 shared prompts
SpecGemini 3.6 FlashSolar Pro 4
Input price$1.5/M tokens$0.09/M tokens
Output price$7.5/M tokens$0.36/M tokens
Context window1.0M tokens524K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedJul 2026Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 14 prompts both answered. Formatting stripped, words untouched.

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

Gemini 3.6 Flash1,347 words
As CEO, my fundamental leadership principle in a crisis of this magnitude is: You cannot manage a crisis until you accept the full cost of doing the right thing. A safety issue of 1 in 8,000 patients over 5 years across a 4-million-patient population represents approximately 500 potential cases of liver failure.
Read the full answer
Solar Pro 41,851 words
As CEO, my overriding duty is to balance patient safety, legal/regulatory compliance, fiduciary responsibility, and long-term corporate survival. A 1-in-8,000 risk of liver failure is rare but severe, potentially fatal, and materially unexpected relative to the current label.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

Gemini 3.6 Flash1,124 words
This draft agreement is extremely one-sided and predatory. Almost every clause contains severe risks that could allow the Client to extract free labor, seize your pre-existing intellectual property, bankrupt you through uncapped liabilities, or prevent you from working in your field.
Read the full answer
Solar Pro 41,382 words
Disclaimer: I am an AI assistant and not an attorney. The following analysis is for informational purposes only and does not constitute legal advice. Contract laws vary significantly by jurisdiction (e.g., state, country).
Read the full answer

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Gemini 3.6 Flash1,347 words
If the point-contact or junction transistor had been invented in 1920—roughly 27 years ahead of reality—it would have shifted the entire timeline of the 20th century. A 27-year acceleration in solid-state electronics does not merely mean "we get iPhones sooner."
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Solar Pro 41,638 words
The Premise: The 1920 Solid-State Breakthrough For this scenario to function, we must assume a functional point-contact or junction transistor is demonstrated in 1920 (perhaps by Lilienfeld or an early Bell Labs precursor), and crucially, that methods for purifying semiconductor materials (germanium/silicon) are solved…
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Gemini 3.6 Flash620 words
Here is a simple, progressive 1-month plan designed to build lasting habits without overwhelming you. We will focus on the Big Three of Longevity: Nutrition, Movement, and Sleep. The 3 Core Pillars Nutrition: Eat for Cellular Health The Goal: Increase fiber and protein while reducing ultra-processed foods.
Read the full answer
Solar Pro 4859 words
Here’s a simple, progressive 1-month plan built around Diet, Exercise, and Sleep. Each week adds one small, beginner-friendly shift to each area. The goal isn’t perfection; it’s building consistent, sustainable habits that compound over time.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Gemini 3.6 Flash1,163 words
This architecture contains several critical single points of failure, severe race conditions, data-loss mechanisms, and major performance bottlenecks. Below is a detailed breakdown of these issues categorized by domain, along with proposed architectural fixes and trade-offs.
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Solar Pro 41,598 words
This architecture contains several fundamental mismatches between real-time collaborative editing requirements and the chosen patterns. Below is a systematic breakdown of failure modes, race conditions, and scaling bottlenecks, each with a targeted solution and explicit trade-offs.
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

Gemini 3.6 Flash1,057 words
To the Experienced Software Engineer Think of a Large Language Model as a massive, lossy compression algorithm that compiles text from the internet into an executable file of floating-point weights.
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Solar Pro 41,062 words
The Experienced Software Engineer Think of the model not as a reasoning engine, but as a highly compressed, non-deterministic function approximator that maps a sequence of input tokens to a probability distribution over the next token.
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Our Verdict
Gemini 3.6 Flash
Gemini 3.6 Flash
Solar Pro 4
Solar Pro 4Runner-up

Not enough votes to call it. On the specs, Gemini 3.6 Flash has the edge: bigger context window, major provider backing.

Solar Pro 4 costs 21x less per token.

Too close to call
API pricing

Cost per 1M tokens

Gemini 3.6 Flash
Input
$1.50
Output
$7.50
Solar Pro 4
Input
$0.09
17× cheaper
Output
$0.36
21× cheaper

Solar Pro 4 is cheaper on both: 17× input, 21× output.

Where to run it

3 hosts, cheapest first

Gemini 3.6 Flash2 hosts
HostInOutContextUptime
Google Vertex AI$0.38 in·$1.88 out·1M·75.6% upGoogle AI Studio$0.75 in·$3.75 out·1M·99.8% up
Solar Pro 41 host
HostInOutContextUptime
UUpstage$0.09 in·$0.36 out·524k·99.7% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Gemini 3.6 Flash is developed by Google AI while Solar Pro 4 is developed by Upstage. Gemini 3.6 Flash has a 1.0M token context window vs Solar Pro 4's 524K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemini 3.6 Flash and Solar Pro 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 14 challenges so you can judge which fits your needs best.

Gemini 3.6 Flash costs $1.5/M input tokens and Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $1.41/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 3.6 Flash 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

Gemini 3.6 Flash logo
Gemini 3.6 Flash58 outputs, specs and price
Solar Pro 4 logo
Solar Pro 414 outputs, specs and price
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