Solar Pro 2 (Preview)

May 2025
Solar Pro 2 (Preview)
Compare in
on
—per task?
API price not publicprice
—output speed?
64Kcontext

Rankingat high effort?

Strong at

C
Reasoning#247 of 334Science#232 of 312

History

4 versions
510152025Jul 25Oct 25Jan 26Apr 26Jul 26Release dateAA Intelligence Index 4.3.22 · May2 · Jul34
510152025Jul 25Jan 26Jul 26Release dateAA Intelligence Index 4.3.22 · May2 · Jul34

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam6.1#249
AA Intelligence Index 4.3.2≈9.1#226
GPQA Diamond57.8#235
Coding
LiveCodeBench · AA archived46.2#97

FAQ

How much does Solar Pro 2 (Preview) cost?›

There is no per-unit API price: API price not public.

Is Solar Pro 2 (Preview) free to use?›

There is no free API.

How good is Solar Pro 2 (Preview), and what is it best at?›

#247 of 334 in Chat & Knowledge, #97 of 152 in Coding.

Is Solar Pro 2 (Preview) better than Nova Premier?›

On AA Intelligence Index 4.3.2, Solar Pro 2 (Preview) scores 9.1 vs 9.2 — about the same.

What is the context window of Solar Pro 2 (Preview)?›

64K tokens.

When was Solar Pro 2 (Preview) released? Is there a newer version?›

Released 2025-05-20. It has been superseded by Solar Pro 2.

Is Solar Pro 2 (Preview) open source?›

No, Solar Pro 2 (Preview) is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can Solar Pro 2 (Preview) read images?›

No, it accepts text only.

What is Solar Pro 2 (Preview)?›

Solar Pro 2 (Preview) is a closed language model from Upstage, released May 2025.

What are the best alternatives to Solar Pro 2 (Preview)?›

GPT-6 Luna (better), MiMo v2.6 Pro (open weights).