Solar Pro 4
upstage/solar-pro4
Solar Pro 4 is Upstage's cost-efficient large language model, featuring a 524K context window.
Key facts
- Input price
- $0.09 / 1M tokens
- Output price
- $0.36 / 1M tokens
- Context window
- 524K tokens
- Max output
- 131K tokens
- Accepts
- Text
- Returns
- Text
Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $0.27 (1M input tokens × $0.09 + 0.5M output tokens × $0.36). Estimate your own usage.
Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.
Call it from your code
curl https://api.tokenctr.com/v1/chat/completions \
-H "Authorization: Bearer $TOKENCENTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "upstage/solar-pro4", "messages": [{"role": "user", "content": "Hello!"}]}'Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart
Benchmarks
Artificial Analysis
- Intelligence index
- 28.2
- Coding index
- 52.7
Design Arena
| Category | Rank | Elo | Win rate |
|---|---|---|---|
| Agents: Web apps | 35 | 1098 | 30% |
| Models: 3D | 56 | 1179 | 46.4% |
| Models: Code | 63 | 1184 | 39% |
| Models: Data visualization | 64 | 1179 | 41.3% |
| Models: Game dev | 64 | 1173 | 39.9% |
| Models: Websites | 74 | 1178 | 37.5% |
| Models: UI components | 75 | 1149 | 35.5% |
Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.