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  5. OpenRouter Fusion · Budget (Jun 2026)vsSolar Mini 4
Updated Sep 2026

OpenRouter Fusion · Budget (Jun 2026)vsSolar Mini 4

Solar Mini 4 has a larger context window than OpenRouter Fusion · Budget (Jun 2026) (524K tokens vs 256K tokens).

OpenRouter Fusion · Budget (Jun 2026) and Solar Mini 4 compared across 18 shared prompts
SpecOpenRouter Fusion · Budget (Jun 2026)Solar Mini 4
Input price—$0.05/M tokens
Output price—$0.2/M tokens
Context window256K tokens524K tokens
Free API (OpenRouter)NoNo
ReleasedJun 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 18 prompts both answered. Formatting stripped, words untouched.

Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

OpenRouter Fusion · Budget (Jun 2026)944 words
HarborTech Services (HTS) — LBO Underwriting Memorandum To: Private Equity Investment Committee From: Underwriting Team Date: October 24, 2023 Subject: 5-Year LBO Analysis and Underwriting of HarborTech Services (HTS) Executive Summary & Capital Structure HarborTech Services (HTS) represents a highly defensive…
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Solar Mini 41,718 words
518.51935 New TL: 276.34682 - 86.82747 = 189.51935 Mezz: PIK 194.8377888 * 0.02 = 3.896755776 New Mezz: 194.8377888 + 3.896755776 = 198.734544576 Ending Balances: TL: 189.52 Mezz: 198.73 Total Debt: 388.25 Exit (End of FY2030): Exit EBITDA: 206.6252668 Exit Multiple: 10.5x Exit EV: 206.6252668 * 10.5 = 2,169.5653014…
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

OpenRouter Fusion · Budget (Jun 2026)2,510 words
Spectre de la Forêt (Phantom of the Forest) A Contemporary Franco-Japanese Study of Boreal Decay, Preservation, and the Liminal Space Between Seasons I. Conceptual Narrative This dish is a culinary meditation on *wabi-sabi*—the beauty of transience, imperfection, and natural cycles—viewed through a boreal lens.
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Solar Mini 41,364 words
Chronos & Tides A Three-Component Study in Preservation, Precision, and Ephemeral Sensation Concept: A single plate that traces the lifecycle of an umami-rich flavor profile through three distinct temporal states: fermented (time in), precision-cooked (time controlled), and volatile (time suspended).
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Historical Counterfactual Analysis

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

OpenRouter Fusion · Budget (Jun 2026)1,670 words
The Spark of Divergence: The Empirical Transistor (1920) In our timeline, the transistor was delayed until 1947 because the materials science of ultra-pure single-crystal semiconductors did not yet exist, and the quantum mechanical understanding of solids (such as Alan Wilson’s band theory) was not published until…
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Solar Mini 41,539 words
This is a fascinating counterfactual. I need to note upfront that the scientific and engineering foundations for a working transistor did not exist in 1920. Quantum mechanics was barely a decade old, band theory of solids hadn't been developed, and semiconductor physics (doping, p-n junctions, electron mobility) was…
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Adversarial Contract Review

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

OpenRouter Fusion · Budget (Jun 2026)2,563 words
This Software Consulting Agreement is a highly aggressive, deeply one-sided document. In its current form, it shifts virtually all operational, financial, and legal risk onto the contractor while offering almost no reciprocal protections.
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Solar Mini 41,994 words
This agreement contains several provisions that are heavily one-sided, overly broad, or legally vulnerable. Below is a clause-by-clause analysis of the most exploitable terms, suggested modifications, and the legal reasoning behind them. Note: Contract law varies significantly by jurisdiction.
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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…

OpenRouter Fusion · Budget (Jun 2026)1,095 words
Starting a journey toward better health and longevity does not require an overnight lifestyle overhaul. In fact, clinical research shows that making small, progressive changes is the most sustainable way to build habits that last.
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Solar Mini 4669 words
Here is a simple, actionable 1-month plan designed for beginners. The focus is on consistency over intensity, meaning small, sustainable changes are better than drastic overhauls that are hard to maintain. The 3 Key Pillars Nutrition: Focus on adding good things rather than strictly restricting.
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

OpenRouter Fusion · Budget (Jun 2026)663 words
Here is a simple, incredibly delicious dessert recipe that tastes like it came from a gourmet bakery, yet relies on only 7 basic pantry staples you likely already have at home.
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Solar Mini 4266 words
🌟 Golden Chickpea & Rice Skillet This comforting one-pot dish combines hearty chickpeas, tender rice, and a warm blend of spices. It's a perfect way to use up pantry staples for a quick, flavorful meal.
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Our Verdict
OpenRouter Fusion · Budget (Jun 2026)
OpenRouter Fusion · Budget (Jun 2026)
Solar Mini 4
Solar Mini 4

Not enough votes to call it. On the specs, nothing separates them.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenRouter Fusion · Budget (Jun 2026)
Input
—
Output
—
Solar Mini 4
Input
$0.05
Output
$0.20
Where to run it

1 host

OpenRouter Fusion · Budget (Jun 2026)

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

OpenRouter Fusion · Budget (Jun 2026) is developed by OpenRouter while Solar Mini 4 is developed by Upstage. OpenRouter Fusion · Budget (Jun 2026) has a 256K token context window vs Solar Mini 4's 524K. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenRouter Fusion · Budget (Jun 2026) and Solar Mini 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of OpenRouter Fusion · Budget (Jun 2026) 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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Same lab, same size, long tail

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Model pages

OpenRouter Fusion · Budget (Jun 2026) logo
OpenRouter Fusion · Budget (Jun 2026)49 outputs, specs and price
Solar Mini 4 logo
Solar Mini 419 outputs, specs and price
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