Solar Pro 3

Apr 2026
Solar Pro 3
Compare in
on
$0.079per task?
$0.15 / $0.60per 1M in / outcache $0.015
151 tok/sfirst token in 1.3 s?
131Kcontext

Rankingat high effort?

Strong at

A
Tool calling#58 of 242Instructions#45 of 245
C
Coding#75 of 132Agents & work tasks#122 of 175Reasoning#186 of 334Science#173 of 312Long context#215 of 273Knowledge#228 of 318

History

4 versions
406080Jul 25Oct 25Jan 26Apr 26Release dateτ²-bench2 · Jul3
406080Jul 25Oct 25Jan 26Apr 26Release dateτ²-bench2 · Jul3

Benchmarks

all categories
Chat & Knowledge
Humanity's Last Exam10.3#187
AA Omniscience Index-53.4#229
CritPt (physics)0#180
AA Intelligence Index 4.3.27.8#250
AA Omniscience · Accuracy18.5#177
AA Omniscience · Hallucination Rate88.2#233
AA-LCR (long context) 1.132.3#217
GDP.pdf · AA all-pass1.6#109
MLCR-AA0.6#60
GPQA Diamond72.4#175
Coding
Terminal-Bench 4.00#75
SciCode25.5#128
Terminal-Bench Hard (version unstated)7.6#139
Terminal-Bench 2.112#123
Agents & Tool Use
AutomationBench-AA0.5#120
GDPval-AA (work tasks) 2.10#122
τ³-Banking · AA8.7#98
AA-Briefcase 1.1 · Elo99#121
τ²-bench · AA86.3#59
Writing & Language
IFBench (instructions)71.2#45

FAQ

How much does Solar Pro 3 cost?›

$0.15 per 1M input tokens and $0.60 per 1M output tokens; cached input $0.015 per 1M. A typical benchmark task costs about $0.079 at high effort.

Is Solar Pro 3 free to use?›

There is no free API; the cheapest paid price is $0.15 per 1M input tokens.

How good is Solar Pro 3, and what is it best at?›

#186 of 334 in Chat & Knowledge, #75 of 132 in Coding, #120 of 133 in Agents & Tool Use, #93 of 95 in Writing & Language, #109 of 133 in Vision & Documents. Strongest at: Tool calling, Instructions.

Is Solar Pro 3 better than Solar Pro 2?›

On τ²-bench · AA, Solar Pro 3 scores 86.3 vs 31.9 — higher.

How can I use Solar Pro 3?›

Through the API of Upstage.

What is the context window of Solar Pro 3?›

131K tokens, with up to 118K output tokens.

When was Solar Pro 3 released? Is there a newer version?›

Released 2026-04-06. It is the current version in its line.

Is Solar Pro 3 open source?›

No, Solar Pro 3 is a closed model available through an API. The closest open-weights option here is GLM 5.2.

Can Solar Pro 3 read images?›

No, it accepts text only.

What is Solar Pro 3?›

Solar Pro 3 is a closed language model from Upstage, released Apr 2026, the successor to Solar Pro 2.

What are the best alternatives to Solar Pro 3?›

GLM 4.7 Flash (cheaper), MiMo v2.5 (better), GLM 5.2 (open weights).