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. MiniMax M2.1vsSolar Pro 4
Updated Aug 2026

MiniMax M2.1vsSolar Pro 4

Solar Pro 4 is the newer model, released after MiniMax M2.1.

MiniMax M2.1 and Solar Pro 4 compared across 14 shared prompts
SpecMiniMax M2.1Solar Pro 4
Input price—$0.09/M tokens
Output price—$0.36/M tokens
Context window—524K tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedDec 2025Aug 2026
Side by side

Same prompt, both answers

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

Historical Counterfactual Analysis

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

MiniMax M2.15,764 words
The Transistor in 1920: A Counterfactual History of the Twentieth Century Introduction: The Single Most consequential Alternative The invention of the transistor at Bell Laboratories on December 23, 1947, stands as one of the most important technological breakthroughs in human history.
Read the full answer
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

Debug This Architecture

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

MiniMax M2.15,342 words
Critical Analysis: Real-Time Collaborative Document Editor Architecture Executive Summary This architecture presents several significant design concerns that would likely result in data loss, inconsistent user experiences, and scaling limitations in production environments.
Read the full answer
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…

MiniMax M2.1707 words
How Large Language Models Learn and Generate Text For the Experienced Software Engineer You build distributed systems—you understand that emergence isn't magic, it's what happens when you compose simple components in sufficient quantity.
Read the full answer
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.
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

MiniMax M2.11,727 words
Analysis of MindMeld AI Pitch Deck: Weakest Claims Executive Summary After reviewing the MindMeld AI pitch deck, I've identified three claims that significantly undermine the startup's credibility. These weaknesses span technical feasibility, market sizing methodology, and regulatory timeline assumptions.
Read the full answer
Solar Pro 41,009 words
Here are the three weakest claims in the MindMeld AI pitch deck, along with an analysis of why they undermine credibility and specific recommendations for improvement. The Technical Performance Claim Claim: "Our proprietary EEG headband uses advanced ML to decode neural patterns into text with 94% accuracy...
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…

MiniMax M2.1398 words
Golden Cloud Buttermilk Pancakes Overview These fluffy, golden pancakes are impossibly simple yet utterly delicious. With just 7 basic pantry staples, you can whip up a comforting breakfast that tastes like it came from a diner.
Read the full answer
Solar Pro 4294 words
🍝 Golden Umami Silk Noodles A savory-sweet pasta dish that transforms basic pantry staples into a glossy, flavorful meal. It's quick, comforting, and relies on the balance of soy, honey, and butter for a rich sauce without needing fresh produce.
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…

MiniMax M2.13,100 words
Software Consulting Agreement: Critical Contractor Risk Analysis This agreement contains numerous provisions that create severe legal and financial exposure for the contractor. Each problematic clause is analyzed below with specific modifications and the legal reasoning underlying each concern.
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
Our Verdict
MiniMax M2.1
MiniMax M2.1
Solar Pro 4
Solar Pro 4

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

Too close to call
API pricing

Cost per 1M tokens

MiniMax M2.1
Input
—
Output
—
Solar Pro 4
Input
$0.09
Output
$0.36
Where to run it

3 hosts

MiniMax M2.12 hosts
HostInOutContextUptime
MiniMaxfp8$0.30 in·$1.20 out·205k·99.6% upNNovitafp8$0.30 in·$1.20 out·205k·100% up
Solar Pro 41 host
HostInOutContextUptime
UUpstage$0.09 in·$0.36 out·524k·99.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

MiniMax M2.1 is developed by MiniMax while Solar Pro 4 is developed by Upstage. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

It depends on your use case. MiniMax M2.1 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.

This page shows a side-by-side comparison of MiniMax M2.1 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.

Keep exploring

More comparisons

Against the newest arrivals

MiniMax M2.1 logoDeepSeek V4 Flash Vision Exp logo
MiniMax M2.1 vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Solar Pro 4 logoHy3 logo
Solar Pro 4 vs Hy3Landed Sep 2026
MiniMax M2.1 logoQwen3.7 Flash logo
MiniMax M2.1 vs Qwen3.7 FlashLanded Sep 2026
Solar Pro 4 logoLing 3.0 Flash logo
Solar Pro 4 vs Ling 3.0 FlashLanded Sep 2026
MiniMax M2.1 logoMuse Glimmer 30B logo
MiniMax M2.1 vs Muse Glimmer 30BLanded Sep 2026
Solar Pro 4 logoGLM 5.3 logo
Solar Pro 4 vs GLM 5.3Landed Sep 2026
MiniMax M2.1 logoTernary Bonsai 2 27B logo
MiniMax M2.1 vs Ternary Bonsai 2 27BLanded Sep 2026
Solar Pro 4 logoGLM 5.3 Flash logo
Solar Pro 4 vs GLM 5.3 FlashLanded Sep 2026

Same lab, same size, long tail

MiniMax M2.1 logoMiniMax M3 logo
MiniMax M2.1 vs MiniMax M3Same lab
MiniMax M2.1 logoMiniMax M2.7 logo
MiniMax M2.1 vs MiniMax M2.7Same lab
Solar Pro 4 logoSolar Pro 3 logo
Solar Pro 4 vs Solar Pro 3Same lab
Solar Pro 4 logoOx Alpha logo
Solar Pro 4 vs Ox AlphaSame size
Solar Pro 4 logoMuse Spark 1.3 logo
Solar Pro 4 vs Muse Spark 1.3Same size
Solar Pro 4 logoMuse Spark 1.3 Contributor logo
Solar Pro 4 vs Muse Spark 1.3 ContributorSame size
MiniMax M2.1 logoNemotron 3 Nano Omni (free) logo
MiniMax M2.1 vs Nemotron 3 Nano Omni (free)Same size
Solar Pro 4 logoNVIDIA Nemotron 3 Super (free) logo
Solar Pro 4 vs NVIDIA Nemotron 3 Super (free)Same size

Model pages

MiniMax M2.1 logo
MiniMax M2.159 outputs, specs and price
Solar Pro 4 logo
Solar Pro 414 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