Upstage: Solar Pro 4
by UpstageUpstage: Solar Pro 4 is a large language model from Upstage. It costs $0.150 per million input tokens and $0.600 per million output tokens. Its context window is 524K tokens.
- Input / 1M tokens
- $0.150
- Output / 1M tokens
- $0.600
- Cached input / 1M
- $0.030
- Context window
- 524K
On repeated prefixes
tokens
Who serves it cheapest
1 hosts serve Solar Pro 4. Same weights, same API - the price difference is pure margin and routing.
| Provider | Input / 1M | Output / 1M | Context | Throughput | Uptime 24h |
|---|---|---|---|---|---|
| UpstageCheapest | $0.150 | $0.600 | 524K | - | 100.0% |
Benchmarks
Independent scores published alongside the catalogue.
- Intelligence index
- 28.2
- Coding index
- 52.7
About Solar Pro 4
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...
Specifications
| Model ID | upstage/solar-pro4 |
|---|---|
| Provider | Upstage |
| Context window | 524K tokens |
| Max output | 131K tokens |
| Input modalities | text |
| Output modalities | text |
| Knowledge cutoff | - |
| Open weights | No |
| Released | August 10, 2026 |
Cheaper alternatives
Models that cost less than Solar Pro 4 while keeping at least half its context window and every input modality it supports.
Frequently asked
How much does Upstage: Solar Pro 4 cost?
$0.150 per million input tokens and $0.600 per million output tokens. Cached input reads cost $0.030 per million tokens.
What is the context window of Upstage: Solar Pro 4?
524K tokens, with up to 131K tokens of output per request.
Confirm against the source: Upstage official pricing.