Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. OpenAI o4 Mini HighvsSolar Mini 4
Updated Sep 2026

OpenAI o4 Mini HighvsSolar Mini 4

Solar Mini 4 is cheaper than OpenAI o4 Mini High at $0.05/M vs $1.1/M input tokens.

OpenAI o4 Mini High and Solar Mini 4 compared across 19 shared prompts
SpecOpenAI o4 Mini HighSolar Mini 4
Input price$1.1/M tokens$0.05/M tokens
Output price$4.4/M tokens$0.2/M tokens
Context window200K tokens524K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedApr 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from 4 of the 19 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) –…

OpenAI o4 Mini High483 words
Below is a five-year LBO “quick-and-dirty” model for HTS. All figures in $m. Assumptions (entry FY 2025): • Revenue 900; EBITDA 120 (13.3%); EV = 12.0×120 = 1,440 • Debt = 5.5×120 = 660 (Term Loan 480; Mezz 180); Fees = 2%×1,440 = 28.8 → Equity = 1,440+28.8–660 = 808.8 • Term Loan: 9.0% cash interest; 1.0% amort of…
Read the full answer
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…
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…

OpenAI o4 Mini High586 words
One‑Month Starter Plan for Better Health & Longevity Focus areas: 1) Diet 2) Exercise 3) Sleep Week 1 – Lay the Foundations • Diet – Track what you eat for 3 days (use a notes app or paper). – Add at least 8 cups (2 L) of water daily. – Include one extra serving of fruit or veg at each meal.
Read the full answer
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.
Read the full answer

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…

OpenAI o4 Mini High244 words
Sun‑Kissed Bean Spaghetti A bright, one‑pot pasta that turns seven simple pantry staples into a satisfying meal in 20 minutes. Ingredients (serves 2–3) 8 oz (about 2 cups) dried spaghetti or any pasta 1 (14.5 oz) can diced tomatoes (with juices) 1 (15 oz) can beans (cannellini, kidney or chickpeas), drained & rinsed…
Read the full answer
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.
Read the full answer

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

OpenAI o4 Mini High694 words
Investment Committee Memo Subject: LedgerLift (LLLT) – B2B SaaS Spend Management & AP Automation Date: MM/DD/2026 Recommendation • Short LLLT; 12-month price target: $28–$43 • Thesis (2 sentences): LLLT’s shares trade at 9× NTM revenue and 35× EBIT vs.
Read the full answer
Solar Mini 4347 words
Investment Committee Memo: LedgerLift (LLLT) To: Investment Committee From: Research Date: October 26, 2023 Subject: Long/Short Recommendation: LedgerLift (LLLT) Recommendation Action: Long 12-Month PT Range: $55 – $65 Thesis: LedgerLift demonstrates best-in-class SaaS metrics (123% NRR, 94% gross retention) within a…
Read the full answer
Our Verdict
OpenAI o4 Mini High
OpenAI o4 Mini High
Solar Mini 4
Solar Mini 4

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

Solar Mini 4 costs 22x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI o4 Mini High
Input
$1.10
Output
$4.40
Solar Mini 4
Input
$0.05
22× cheaper
Output
$0.20
22× cheaper

Solar Mini 4 is cheaper on both: 22× input, 22× output.

Where to run it

2 hosts

OpenAI o4 Mini High1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up
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

OpenAI o4 Mini High is developed by OpenAI while Solar Mini 4 is developed by Upstage. OpenAI o4 Mini High has a 200K token context window vs Solar Mini 4's 524K. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenAI o4 Mini High and Solar Mini 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.

OpenAI o4 Mini High costs $1.1/M input tokens and Solar Mini 4 costs $0.05/M input tokens. Solar Mini 4 is $1.05/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 OpenAI o4 Mini High 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.

Keep exploring

More comparisons

Against the newest arrivals

OpenAI o4 Mini High logoQwen3.8 Max Prime logo
OpenAI o4 Mini High vs Qwen3.8 Max PrimeLanded Sep 2026
Solar Mini 4 logoGLM 5.3 Prime logo
Solar Mini 4 vs GLM 5.3 PrimeLanded Sep 2026
OpenAI o4 Mini High logoQwen3.8 Omni Flash logo
OpenAI o4 Mini High vs Qwen3.8 Omni FlashLanded Sep 2026
Solar Mini 4 logoCommand A+ logo
Solar Mini 4 vs Command A+Landed Sep 2026
OpenAI o4 Mini High logoClaude Opus 5.5 logo
OpenAI o4 Mini High vs Claude Opus 5.5Landed Sep 2026
Solar Mini 4 logoGPT-6 Luna Pro logo
Solar Mini 4 vs GPT-6 Luna ProLanded Sep 2026
OpenAI o4 Mini High logoGPT-6 Sol Pro logo
OpenAI o4 Mini High vs GPT-6 Sol ProLanded Sep 2026
Solar Mini 4 logoGPT-6 Luna logo
Solar Mini 4 vs GPT-6 LunaLanded Sep 2026

Same lab, same size, long tail

OpenAI o4 Mini High logoGPT-6 Luna Pro logo
OpenAI o4 Mini High vs GPT-6 Luna ProSame lab
OpenAI o4 Mini High logoGPT-6 Luna logo
OpenAI o4 Mini High vs GPT-6 LunaSame lab
Solar Mini 4 logoSolar Pro 4 logo
Solar Mini 4 vs Solar Pro 4Same lab
Solar Mini 4 logoSolar Pro 3 logo
Solar Mini 4 vs Solar Pro 3Same lab
Solar Mini 4 logoGemini 1.5 Pro logo
Solar Mini 4 vs Gemini 1.5 ProNew provider
Solar Mini 4 logoGemini 2.5 Flash Lite Preview 09-2025 logo
Solar Mini 4 vs Gemini 2.5 Flash Lite Preview 09-2025New provider
Solar Mini 4 logoGemini 2.5 Flash Preview logo
Solar Mini 4 vs Gemini 2.5 Flash PreviewNew provider
Solar Mini 4 logoGemini 2.5 Flash Preview 05-20 logo
Solar Mini 4 vs Gemini 2.5 Flash Preview 05-20New provider

Model pages

OpenAI o4 Mini High logo
OpenAI o4 Mini High55 outputs, specs and price
Solar Mini 4 logo
Solar Mini 419 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed