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Upstage

7 models on Artificials, 2 with published test results and 1 with open weights you can download.

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Best on the capability indexNot yetNone of its models is on the index yet
Best rankTop 30%Solar Pro 4 on Arena coding
Newest releaseSolar Mini 4Sep 23, 2026
Models72 tested, 1 with open weights

Where Upstage stands

Its best model’s rank among all models tested on each skill area’s main test, the same tests model pages use. A longer bar means a better rank.

  • OverallSolar Pro 4 on Arena text
    Top 42%
  • CodingSolar Pro 4 on Arena coding
    Top 30%
  • MathSolar Pro 4 on Arena math
    Top 32%
  • LanguageSolar Pro 4 on Arena creative writing
    #198 of 387
  • ReasoningSolar Pro 4 on Arena hard prompts
    Top 40%

Every test

Its best result on each published test, and that result’s rank among every model tested. Scores from different tests are never combined.

TestBest modelScoreRank
Arena codingSolar Pro 41463#115 of 384
Arena mathSolar Pro 41412#118 of 372
Arena hard promptsSolar Pro 41409#155 of 389
Arena instruction followingSolar Pro 41379#155 of 389
Arena textSolar Pro 41386#161 of 389
Arena creative writingSolar Pro 41310#198 of 387
Arena WebDevSolar Pro 41370#86 of 123

Every model

Newest first. The price is per 1M tokens, blended three input tokens to one output token: Upstage’s own listing, or else the middle price across hosts.

ModelReleasedContextPriceCapability index
Solar Mini 4Sep 23, 2026524.3K tokens$0.0875Not on the index
Solar Pro 4Aug 6, 2026524.3K tokens$0.525Not on the index
Solar Pro 3Jan 27, 2026131.1K tokens$0.263Not on the index
solar-pro3Jan 2026131.1K tokens$0.25Not on the index
solar-pro2May 20, 202565.5K tokens$0.25Not on the index
solar-miniJun 12, 202432.8K tokens$0.15Not on the index
solar-10.7b-instructJun 5, 2024128K tokensNo paid listingNot on the index

Models, prices, context windows and release dates from models.dev (MIT). Test results from Arena (CC BY 4.0). A model counts here when Upstage sells it, several hosts list it or a test covers it. Each figure is the source’s own; nothing is combined into a new score.