Solar Pro 4
Provider：Upstage
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...
Key specs
- Context：524.3K
- Max output：131.1K
- Tokenizer：Other
- Released：2026-08-10
Token pricing
- Input price：$0.030 / 1M tokens
- Output price：$0.120 / 1M tokens
- Cache read：$0.0060 / 1M tokens
- Blended price：$0.052 / 1M tokens
Modalities
Text
Use Cases
- Deep Reasoning & Analysis：Process long legal docs, academic papers, financial reports; multi-hop reasoning and evidence-chain tracing across huge contexts.（≈ $0.0010/call）
When to pick this model
Signals derived from public pricing and spec fields — not a benchmark. Validate with official docs and your own eval.
- Low input + output price: solid fit for high-frequency calls and batch processing.
- Low blended price: budget-friendly for fleet-scale deployment.
- Long max output (>=30K tokens): strong fit for deep report / essay / document-drafting workflows.
FAQ
- What is the token pricing of Solar Pro 4? Input price $0.030 / 1M tokens, output price $0.120 / 1M tokens, blended about $0.052 / 1M tokens. Refer to Upstage’s official page for the exact rate.
- What context window does Solar Pro 4 support? Context window is 524.3K, max output about 131.1K, suitable for long documents, multi-turn chat and complex reasoning.
- What scenarios is Solar Pro 4 best for? Based on its capability and pricing, Solar Pro 4 fits best: Deep Reasoning & Analysis. See the Use Cases section for details and cost estimates.
- What input/output modalities does Solar Pro 4 support? Supports Text modality.
- Is Solar Pro 4 a free model? Solar Pro 4 is billed per token, not a free model.
- Which provider offers Solar Pro 4? Solar Pro 4 is offered by Upstage.
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Full info：Solar Pro 4