GPT-4.1 Mini vs Solar Pro 3

Compare GPT-4.1 Mini by OpenAI against Solar Pro 3 by Upstage, context windows of 1.0M vs 128K, tested across 39 shared challenges. Updated April 2026.

Which is better, GPT-4.1 Mini or Solar Pro 3?

GPT-4.1 Mini and Solar Pro 3 are both competitive models. GPT-4.1 Mini costs $0.4/M input tokens vs $0/M for Solar Pro 3. Context windows: 1048K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Mini and Solar Pro 3

GPT-4.1 Mini is made by openai while Solar Pro 3 is from upstage. GPT-4.1 Mini has a 1048K token context window compared to Solar Pro 3's 128K. On pricing, GPT-4.1 Mini costs $0.4/M input tokens vs $0/M for Solar Pro 3.

Our Verdict
GPT-4.1 Mini
GPT-4.1 Mini
Solar Pro 3
Solar Pro 3

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Solar Pro 3 uses 17.3x more emoji

GPT-4.1 Mini
Solar Pro 3
59%Vocabulary50%
19wSentence Length21w
0.46Hedging0.42
4.7Bold6.5
4.9Lists2.2
0.00Emoji0.17
0.76Headings0.56
0.17Transitions0.12
Based on 23 + 18 text responses
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GPT-4.1 MiniSolar Pro 3

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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