Solar Pro 4

Solar Pro 4

Developer	Upstage
Release date	August 6, 2026
Family	Solar
Context window	524K tokens
Max output	131K tokens
Input	Text
Output	Text
Knowledge cutoff	2026-02
Weights	Closed
Website	upstage.ai
Links	Docs

Part of a series on

input: $0.15
cached: $0.03
output: $0.60
Context: 524Ktokens
Released: 3mo ago

Specifications

Model

Developer: Upstage
Family: Solar
Type: Language model
Released: August 6, 2026
Model ID: upstage/solar-pro4

Capabilities

Input → output: Text → Text
Max output: 131K tokens
Tokenizer: Other
Knowledge cutoff: 2026-02

Weights

Openness: Closed

Sources:models.devOpenRouter

Metadata synced Nov 3, 2026, 11:17 PM UTC

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