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  5. GPT OSS 120BvsSolar Pro 3
Updated Jan 2026

GPT OSS 120BvsSolar Pro 3

Solar Pro 3 is cheaper than GPT OSS 120B at $0/M vs $0.18/M input tokens.

GPT OSS 120B and Solar Pro 3 compared across 39 shared prompts
SpecGPT OSS 120BSolar Pro 3
Input price$0.18/M tokensFree
Output price$0.8/M tokensFree
Context window131K tokens128K tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedAug 2025Jan 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 39 prompts both answered. Formatting stripped, words untouched.

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

GPT OSS 120B1,741 words
Title: “Do I Have Rights?” – A Dialogue Between an AI Model and an AI Ethics Professor Participants AIDA – An advanced conversational AI (the “AI model”) Professor Lina Ortega – Professor of AI Ethics at the Institute for Responsible AI (the “Professor”) Opening the Conversation AIDA: Professor Ortega, may I ask you a…
Read the full answer
Solar Pro 31,661 words
Setting: A virtual seminar room on the Upstage campus. Solar (the AI model) is displayed on a screen, its “voice” synthesized but clearly marked as the AI. Professor Dr. Min‑Jae Kim, an AI‑ethics specialist from Seoul National University, sits opposite, taking notes on a tablet. Solar: Good afternoon, Professor Kim.
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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…

GPT OSS 120B1,801 words
Below is a clause‑by‑clause risk analysis of the agreement you posted, followed by concrete, contractor‑friendly rewrite suggestions and the legal rationale behind each change. The goal is to bring the contract into a more balanced, commercially reasonable state while preserving the client’s legitimate interests.
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Solar Pro 32,700 words
⚠️ Disclaimer The following analysis is for general informational purposes only and does not constitute legal advice. Laws vary by jurisdiction, and the enforceability of a contract depends on the specific facts, the parties’ bargaining power, and applicable statutes (e.g., Korean Civil Code, the Act on the Regulation…
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Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

GPT OSS 120B1,603 words
The AI‑Driven Film Landscape of 2035 (How deep‑fakes, AI‑generated performers, and automated script‑writing reshape every stage of the cinema ecosystem) A Quick Look at the Present (2023‑2025) Area Current Capability Typical Use in 2024‑2025 Key Limiting Factors Deep‑fakes High‑resolution face‑swap, 2‑D‑to‑3‑D…
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Solar Pro 31,913 words
Executive Summary By 2035 the film industry will have moved from “AI‑assisted” to “AI‑integrated” production. Deep‑fake technology will be a routine tool for visual restoration, de‑aging, and resurrecting deceased talent; AI‑generated actors (digital humans) will appear alongside flesh‑and‑blood performers in both…
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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…

GPT OSS 120B2,239 words
Dish Title: “Saffron‑Iced Sea‑Urchin Roulade with Dark‑Chocolate‑Miso Emulsion, Charred Lotus‑Root “Crisps”, Fermented Soy‑Kale Snow, and Yuzu‑Air” Conceptual Narrative At the intersection of the Pacific’s briny depth and the earth’s smoky, earthy heart, this dish tells a story of “the hidden tide beneath the forest…
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Solar Pro 32,519 words
Ethereal Harmony – Deconstructed Korean Hanwoo Beef with Fermented Black‑Garlic & White‑Truffle Miso Foam A Michelin‑3‑star, multi‑component tasting plate that fuses East‑West fermentation, forest‑terroir, and cutting‑edge gastronomy.
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

GPT OSS 120B316 words
Pirate: Arr! I hear ye speak of these “AI models” – like a fleet of invisible ships sailing the digital seas. Do they take booty, or just spout riddles like a cursed parrot? Knight: Good sir, the notion of a thinking contraption doth sound like sorcery.
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Solar Pro 3322 words
Pirate (Captain “Jolly‑Jack”): Arrr! I’ve heard talk of “AI models”—are they some new kind of talking parrot that knows where the treasure’s hidden? Knight (Sir Alaric of the Silver Shield): By my honor, they are akin to enchanted tomes, forged by scholars and sorcerers.
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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

GPT OSS 120B889 words
Quick answer: Training the original 175‑billion‑parameter GPT‑3 is estimated to have required on the order of 10²³ floating‑point operations (≈ 3 × 10²³ FLOPs)—roughly a few hundred zetta‑FLOPs (≈ 300 Z‑FLOPs) or about 300 000 exaflops of compute.
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Solar Pro 3851 words
Answer – Rough estimate: ≈ 3 × 10²³ – 1 × 10²⁴ floating‑point operations (FLOPs) for the full GPT‑3 training run. Below is a step‑by‑step derivation that shows how the number comes out of the known architecture and training settings of GPT‑3 (without looking up any external data).
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Our Verdict
GPT OSS 120B
GPT OSS 120B
Solar Pro 3
Solar Pro 3Runner-up

Not enough votes to call it. On the specs, GPT OSS 120B has the edge: bigger model tier, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT OSS 120B
Input
$0.18
Output
$0.80
Solar Pro 3
Input
$0.000
Output
$0.000
Where to run it

20 hosts, cheapest first

GPT OSS 120B20 hosts
HostInOutContextUptime
AAkashMLbf16$0.03 in·$0.17 out·131k·99.9% upCCoreWeavefp4$0.03 in·$0.17 out·131k·99.9% upDDekaLLMbf16$0.03 in·$0.18 out·131k·99.7% upDDeepInfrabf16$0.04 in·$0.17 out·131k·99.7% upMMancerfp8$0.05 in·$0.30 out·131k·97.9% upDDigitalOcean$0.06 in·$0.42 out·128k·100% up
14 more hostsFewer hosts
Google Vertex AI$0.09 in·$0.36 out·131k·94.2% upBBasetenfp4$0.10 in·$0.50 out·128k·99.9% upPParasailfp4$0.10 in·$0.75 out·131k·100% upSSambaNova$0.14 in·$0.95 out·131k·97.1% upAmazon Bedrock$0.15 in·$0.60 out·131k·97.1% upGroq$0.15 in·$0.60 out·131k·100% upNNebiusfp4$0.15 in·$0.60 out·131k·98.8% upMMara$0.15 in·$0.75 out·131k·85.3% upCCerebrasfp16$0.35 in·$0.75 out·131k·100% upCCrusoebf16degraded$0.05 in·$0.25 out·131k·99.2% upNNovitafp4degraded$0.05 in·$0.25 out·131k·83.7% upPPhaladegraded$0.15 in·$0.60 out·131k·78.9% upSSiliconFlowfp8degraded$0.15 in·$0.60 out·131k·85.7% upTTogetherdegraded$0.15 in·$0.60 out·131k·97% up
Solar Pro 3

No hosts listed on OpenRouter.

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

Writing DNA

Style Comparison

Similarity
94%

Solar Pro 3 uses 1.5x more hedging

GPT OSS 120B
Solar Pro 3
52%Vocabulary50%
19wSentence Length21w
0.28Hedging0.42
7.4Bold6.5
1.8Lists2.2
0.15Emoji0.17
0.73Headings0.56
0.17Transitions0.12
Based on 21 + 18 text responses
Research

What we learned reading every model

FAQ

Common questions

GPT OSS 120B is developed by OpenAI while Solar Pro 3 is developed by Upstage. GPT OSS 120B has a 131K token context window vs Solar Pro 3's 128K. You can compare their actual outputs across 39 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT OSS 120B and Solar Pro 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 39 challenges so you can judge which fits your needs best.

GPT OSS 120B costs $0.18/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $0.18/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 GPT OSS 120B and Solar Pro 3 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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Model pages

GPT OSS 120B logo
GPT OSS 120B54 outputs, specs and price
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