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?

Full ranking →
1Opus 5.561.42Fable 5.159.13Gemini 4 Argon57.14Fable 555.55Sonnet 5.555
···
186Haiku 4.510.4187Solar Pro 310.3187Qwen3 30B A3B 2507 (Reasoning)10.3

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
CheaperGPT-6 Lunamax×3.7-15%$0.068Function calling only with none · Chat Completions+3OpenMiMo v2.6 Prothinking×4.8+68%$0.13Pass back reasoning_content+3CheaperAgnes 2.5 Pro Beta×3.6-43%$0.10 / $0.30CheaperMiMo v2.5 ProthinkingOpen×3.5-32%$0.054CheaperMiMo v2.6 FlashthinkingOpen×3.4-21%$0.062Pass back reasoning_content+3

History

4 versions
102030Jul 25Oct 25Jan 26Apr 26Jul 26Release dateHumanity's Last Exam2 · May2 · Jul34
102030Jul 25Jan 26Jul 26Release dateHumanity's Last Exam2 · May2 · Jul34

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.27.8#250
AA Omniscience Index-53.4#229
AA Omniscience · Accuracy18.5#177
AA Omniscience · Hallucination Rate88.2#233
Humanity's Last Exam10.3#187
GPQA Diamond72.4#175
AA-LCR (long context) 1.132.3#217
IFBench (instructions)71.2#45
CritPt (physics)0#180
GDP.pdf · AA all-pass1.6#109
MLCR-AA0.6#60

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 Humanity's Last Exam, Solar Pro 3 scores 10.3 vs 7.4 — 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 MiMo v2.6 Pro.

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?›

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