Solar Pro 4

Benchmarks, price, context and versions

Also searched as

Solar-Pro-4

Direct answer: Solar Pro 4 is a model from Upstage. On OpenRouter, US$ 0.15 per 1 million input tokens and US$ 0.60 per 1 million output tokens.

✓ Good for

high-volume use (input price in the cheapest 25% on OpenRouter)

✕ Not the best for

Not enough data in the open sources this section uses to build this block.

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

no data

Key specs

Lab: Upstage
Origin: South Korea
Family: Solar Pro provisional data
Weights?what it is: undisclosed
License: no data
Input US$/1M?: US$ 0.15
Output US$/1M: US$ 0.60
Context?: 524,288 tokens
Parameters: no data
Input: text
OpenRouter usage?: 0.2%
Downloads (30 days)?: no data
Use cases provisional data: Text Agents
Dates in sources: 2026, listed on OpenRouter

Version history

2026 solar-pro4-tokenizer Hugging Face Hub, Hugging Face repo created
2026 Upstage: Solar Pro 4 OpenRouter, listed on OpenRouter
2026 solar-pro3-tokenizer Hugging Face Hub, Hugging Face repo created
2025 solar-pro2-tokenizer Hugging Face Hub, Hugging Face repo created
2024 solar-pro-tokenizer Hugging Face Hub, Hugging Face repo created
2024 solar-pro-preview-instruct Hugging Face Hub, Hugging Face repo created
2024 solar-pro-preview-tokenizer Hugging Face Hub, Hugging Face repo created
2024 solar-pro-preview-pretrained Hugging Face Hub, Hugging Face repo created

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Solar Pro 4?

Solar Pro 4 is a model from Upstage, with undisclosed weights, used for text, agents.

How much does Solar Pro 4 cost?

On OpenRouter, US$ 0.15 per 1 million input tokens and US$ 0.60 per 1 million output tokens.

What is the context window of Solar Pro 4?

524,288 tokens, per OpenRouter.

Is Solar Pro 4 open source?

No data in open sources.

Is Solar Pro 4 good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Solar Pro 4?

It was made by Upstage, a lab from South Korea.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Upstage

Solar Mini 4

See lab

Sources

OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.