PriceIndex
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Solar Pro 4

solar-pro4
APIProvider site

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... Built by Upstage.

Prices updated

Input price

$0.09

per 1M tokens · Standard

Output price

$0.36

per 1M tokens · Standard

Input limit

524K

tokens

Output limit

131K

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF
Compare

Solar Pro 4 price history

2 price records since 10/8/2026

Solar Pro 4 cost calculator

Input20M tokens
Output5M tokens

$3.60/month

Standard pricing

    Overview

    What is Solar Pro 4?

    Solar Pro 4 is a text & reasoning model from 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... Its 524K context window and $0.09 input price make it a candidate for cost-sensitive, high-throughput applications.

    Content workflowsClassification

    Rates

    Solar Pro 4 pricing

    Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

    Input · Standard

    $0.09

    Per 1M tokens

    Cached input · Standard

    $0.02

    Per 1M tokens

    Capabilities

    Solar Pro 4 Tools

    Tools available when using Solar Pro 4 through supported provider APIs.

    Function calling

    Supported

    Structured outputs

    Supported

    JSON mode

    Supported

    Reasoning

    Supported

    Built-in web search

    Not supported

    Log probabilities

    Not supported

    Deterministic seed

    Not supported

    Parallel tool calls

    Supported

    Prompt caching

    Supported

    Strengths and limitations

    Strengths

    • Low input cost at $0.09 per million tokens suits high-volume workloads.
    • 524K context supports large documents, repositories and extended conversations.
    • Supports text & reasoning workloads in one model.

    Limitations

    • Generated tokens cost 4× more than input tokens, which matters for verbose responses.
    • Large context capacity does not guarantee consistent retrieval across the entire prompt.
    • Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

    Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

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    Frequently asked questions about Solar Pro 4

    Solar Pro 4 is a text & reasoning model from 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...