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

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperClaude Haiku 5.5medium+57.9-41%$0.047Remove sampling parameters+5BetterGPT-6 Lunalow+44.2-94%$0.005Function calling only with none · Chat Completions+3OpenMuse Spark Openxhigh+78.1+962%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1CheaperMiMo v2.5 ProthinkingOpen+56.7-32%$0.054CheaperLing 3.0 Flash VLthinkingOpen+48.9-66%$0.06 / $0.18

History

4 versions
0246810Jul 25Oct 25Jan 26Apr 26Jul 26Release dateAA Omniscience Index2 · Jul34
0246810Jul 25Jan 26Jul 26Release dateAA Omniscience Index2 · Jul34

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 AA Omniscience Index, Solar Pro 3 scores -53.4 vs -55.9 — 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 Muse Spark Open.

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?›

Claude Haiku 5.5 (cheaper), GPT-6 Luna (better), Muse Spark Open (open weights).