Solar Pro 4

Closed Source

Closed Weights

Parameters

Undisclosed

Context Length

524K

Modality

Text

Architecture

Undisclosed

License

Proprietary

Release Date

10 Aug 2026

Knowledge Cutoff

API Pricing (per 1M)

Input: $0.30 · Output: $1.20

Evaluation Benchmarks

Rank

#70

Benchmark	Score	Rank
Professional Knowledge MMLU Pro	0.863	7
Graduate-Level QA GPQA	0.89	25
Agentic Index Artificial Analysis	0.34	43
Agent Arena Agent Arena	-9.34	46
Web Development WebDev Arena	1371	69
Coding Index Artificial Analysis	0.53	72
Intelligence Index Artificial Analysis	0.33	73
General Text Text Arena	1377	113

Rankings

Overall Rank

#70

Coding Rank

#85

About Solar Pro 4

Solar Pro 4 is a cost-efficient large language model from Upstage featuring a 524K token context window. It is built for long-horizon enterprise tasks, agentic workflows, and document-intensive operations.

Technical Specifications

Architecture specifications are undisclosed for proprietary models.

About Solar

The Solar model family developed by Upstage.

Other Solar Models

No related models available