Upstage: Solar Pro 4

UPSTAGE Developer Architecture Profile

OpenRouter ↗HuggingFace ↗

Intelligence (ELO)1438Chatbot Arena Verified

Max Context Limit524,288Max Out: 131,072 tokens

Prompt Caching80% OFF$0.02 / 1M cached

Standard API / 1M$0.45Blended Standard Rate

Model Capabilities & Contract SLAs

Coding & Logic
Fictional

Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window. It is built for long-horizon tasks and agentic workflows, with strong capabilities in office productivity, document-intensive...

Granular Pricing Matrix

Input Tokens (Standard Prompt)$0.09 / 1M

⚡ Cached Input (Prompt Cache Read)80% OFF$0.02 / 1M

Output Tokens (Completion)$0.36 / 1M

Pricing data via OpenRouter. Sync: 10/2/2026

Evaluate Competitors

VS Engine MatchupUpstage: Solar Pro 4 vs inclusionAI: Ling 3.0 Flash Sante (free)VS Engine MatchupUpstage: Solar Pro 4 vs ByteDance Seed: Seed-2.0-Code VS Engine MatchupUpstage: Solar Pro 4 vs Qwen: Qwen3.7 Flash VS Engine MatchupUpstage: Solar Pro 4 vs Tencent: Hy3 VS Engine MatchupUpstage: Solar Pro 4 vs Anthropic: Claude Sonnet 5 VS Engine MatchupUpstage: Solar Pro 4 vs Qwen: Qwen3.6 Flash