Solar Pro 3

Apr 2026
Solar Pro 3
Compare in
on
$0.058per task?
$0.15 / $0.60per 1M in / outcache $0.015
147 tok/sfirst token in 1.3 s?
131Kcontext

Rankingat high effort?

Full ranking →
1Opus 5.51,866.32Muse Wonder Full1,857.13Sonnet 5.51,837.84Muse Wonder1,770.35Fable 5.11,763.6
···
115Celeris 1301.4116Solar Pro 3272.4117Nemotron 3 Nano 30B A3B254.4

Strong at

A
Tool calling#58 of 242Instructions#45 of 245
C
Coding#77 of 134Agents & work tasks#116 of 177Reasoning#188 of 336Science#173 of 312Long context#217 of 314Knowledge#230 of 320

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperGPT-6 Lunaxhigh×5-28%$0.042Function calling only with none · Chat Completions+3OpenDeepSeek V4.1 Flash 1017max×6.4+350%$0.26Pass back reasoning_content · Chat Completions+4CheaperGPT-5.6 Lunahigh×4.9-25%$0.044CheaperClaude Haiku 5.5medium×4.7-19%$0.047Remove sampling parameters+5CheaperGPT-6.1 Terralow×4.4-6%$0.055

History

4 versions
2004006008001,0001,200Jul 26Release dateGDPval-AA 2.134
2004006008001,0001,200Jul 26Release dateGDPval-AA 2.134

Benchmarks

in Agents & Tool Use
Terminal-Bench 2.112#123
Terminal-Bench 4.00#77
Terminal-Bench Hard (version unstated)7.6#139
GDPval-AA (work tasks) 2.1272.4#116
AA-LCR (long context) 1.132.3#219
τ²-bench · AA86.3#59
τ³-Banking · AA8.7#98
AutomationBench-AA0.5#122
AA-Briefcase 1.1 · Elo99.6#123

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 $0.058 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?›

#188 of 336 in Chat & Knowledge, #77 of 134 in Coding, #122 of 135 in Agents & Tool Use, #94 of 96 in Writing & Language, #111 of 135 in Vision & Documents. Strongest at: Tool calling, Instructions.

Is Solar Pro 3 better than Celeris 1?›

On GDPval-AA (work tasks) 2.1, Solar Pro 3 scores 272.4 vs 301.4 — lower. It is 16% more expensive per task.

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 DeepSeek V4.1 Flash 1017.

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), DeepSeek V4.1 Flash 1017 (open weights).