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  1. Home
  2. Models
  3. Solar Mini 4
Updated Sep 25, 2026
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Openings

How Solar Mini 4 starts an answer

The first lines of 5 of its 13 written answers. Formatting stripped, words untouched.

Adversarial Contract Review

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

1,994 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.
Read the full answer

Mini LBO Underwrite

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

1,718 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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Historical Counterfactual Analysis

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

1,539 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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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…

1,430 words
This is a high-stakes crisis requiring immediate, decisive action that prioritizes patient safety, regulatory compliance, and long-term corporate integrity over short-term stock performance.
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

1,388 words
🧬 3-Month Biohacker Longevity & Performance Optimization Plan ⚠️ Important Disclaimer: This protocol is for informational and educational purposes. It is not medical advice. Always consult a licensed healthcare provider before starting new supplements, fasting regimens, intense exercise, or neurofeedback protocols.
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Compare Solar Mini 4

Solar Mini 4 vs Granite 4.2 8B19 shared prompts · Landed Sep 2026
Solar Mini 4 vs Ox Alpha19 shared prompts · Landed Aug 2026
Solar Mini 4 vs North Mini Code19 shared prompts · Landed Jun 2026
Solar Mini 4 vs MiniMax M319 shared prompts · Landed Jun 2026
Solar Mini 4 vs Nemotron 3.5 Content Safety19 shared prompts · Landed Jun 2026
Solar Mini 4 vs Claude Opus 4.619 shared prompts · Premium
Solar Mini 4 vs LFM2.5-2.6B18 shared prompts · Landed Aug 2026
Solar Mini 4 vs Qwen3.8 Max Prime19 shared prompts · Landed Sep 2026
Solar Mini 4 vs Claude Opus 5.519 shared prompts · Landed Sep 2026
Solar Mini 4 vs GPT-6 Luna Pro19 shared prompts · Landed Sep 2026
Solar Mini 4 vs GPT-6 Sol Pro19 shared prompts · Landed Sep 2026
Solar Mini 4 vs GPT-6 Luna19 shared prompts · Landed Sep 2026

Prompts Solar Mini 4 answered

  • Simple 7-Ingredient Recipeconversation
  • Mini LBO Underwritefinancial modeling
  • Advanced Longevity Plan (Biohacker)reasoning
  • Debug This Architecturereasoning
  • Explain Like I'm a Specific Expertreasoning
  • Startup Pitch Teardownreasoning

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Solar Mini 4 is good. These would like a word anyway.

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GPT-6 Sol logo
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Command A+ logo
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Solar Mini 4

Solar Mini 4

Upstage's compact mixture-of-experts model with 35 billion total parameters and 3 billion active parameters. It supports text generation, tool calling, and a 524,288-token context.

OpenRouterDocs
Provider
Upstage
Released
2026-09-23
Size
SMALL
Free API (OpenRouter)
No
Per 1M tokens
$0.05 in · $0.20 out
Rival’s tab
$0.02
19/19 receipts survived

Free API availability

No free endpoint for Solar Mini 4 was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 25 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"upstage/solar-mini4"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

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Model Responses

14 outputs · $0.02 tracked across 14 receipts

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Solar Mini 4 vs Ox Alpha

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