Upstage

Solar Pro 4 — Benchmark Scores, Pricing & Performance Analysis

BUDGET
Input Cost
$0.09/1M
Output Cost
$0.36/1M
Context Window
524K
Max Output
131K
Knowledge Cutoff
Feb 2026
Accepts
text

Solar Pro 4 by Upstage demonstrates competitive pricing. View detailed benchmark data including scores across coding, math, reasoning, speed, and cost metrics.

Specifications last checked against the provider on . Benchmark scores carry their own source, linked beside each number.

Coding Benchmarks

Design Arena ELO
119147th of 120

Human preference ELO for building things — websites, UI, games, charts, SVG

Design Arena (via OpenRouter)
AA Coding Index
52.740th of 96

Artificial Analysis composite coding score

Artificial Analysis (via OpenRouter)
Website Arena ELO
118855th of 108

Human preference ELO for building a working web page from a brief

Design Arena (via OpenRouter)

Cost Benchmarks

Output Cost
$0.36141st of 413

Cost per 1M output tokens

OpenRouter API
Input Cost
$0.09112th of 413

Cost per 1M input tokens

OpenRouter API
Cached Input Cost
$0.0215th of 136

Cost per 1M cached input tokens — the price that actually applies to a long agent conversation

OpenRouter API

Context Benchmarks

Context Length
524K87th of 451

Maximum context window size

OpenRouter API

Available from 4 providers

The same model costs different amounts depending on who serves it. You can bring your own key for 1 of these — connect it here.

ProviderInput / 1MOutput / 1MCached inContextYour key
LLMTR$0.03$0.12524K
NanoGPT$0.03$0.12$0.006524K
OpenRouter$0.09$0.36$0.018524KSupported
Upstage$0.3$1.2$0.06524K

Solar Pro 4 — Benchmark Scores Overview

Scores normalized to percentage scale for visual comparison. ELO scores mapped to 0-100 range (1100-1500).

Solar Pro 4 — Frequently Asked Questions

How much does Solar Pro 4 cost?

Solar Pro 4 costs $0.09 per 1M input tokens and $0.36 per 1M output tokens. This makes it one of the more affordable models.

What is the context window of Solar Pro 4?

Solar Pro 4 has a context window of 524K tokens. This determines how much text, conversation history, and code the model can process in a single request.

Who created Solar Pro 4?

Solar Pro 4 was created by Upstage. It is classified as a budget model in our catalogue.

Is Solar Pro 4 open source?

No, Solar Pro 4 is a proprietary model. It is available through Upstage's API and compatible providers.