AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — LG AI Research
K-EXAONE 2.0 is a multilingual model from LG AI Research, released on July 31, 2026 and upcycled from K-EXAONE to more than three times its size, focused on reasoning, agentic workflows and long-context work. It covers ten languages, including Korean, English and Japanese.
Model B — Upstage
Solar Pro 4 is Upstage’s flagship model, released on August 6, 2026, built for agentic use and document-based work, coding and business tasks. It supports a 512K context, up to 128K output tokens and a reasoning mode. It is available through Upstage’s console and on-premises.
| Property | K-EXAONE 2.0 | Solar Pro 4 |
|---|---|---|
| Released | Jul 31, 2026 | Aug 6, 2026 |
| Developer | LG AI Research | Upstage |
| Type | llm | llm |
| License | open-weight | proprietary |
| Context window | 262,144 | — |
| Parameters | 750B total, 37B active (Mixture of Experts) | — |
| Developer status | — | — |
| Input $/M tokens | — | $0.15 |
| Output $/M tokens | — | $0.60 |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
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