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Upstage: Solar Pro 4

solar-pro4

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Upstage's Solar Pro 4 is a long-context language model for agentic workflows, office productivity, document-intensive work, and coding. This variant keeps reasoning disabled for faster direct responses.

Modalities

Text → Text

Input / output price

$0.195 / $0.780 per 1M

Context

524K · max output 131K

Capabilities

Tool callingLong context

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$0.195
Output$0.780
Cached input$0.039

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.00121
Per day
$0.6045
Per month (30 days)
$18.14

Solar Pro 4: input $0.195/M · output $0.78/M · cached input $0.039/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "solar-pro4", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to solar-pro4.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "solar-pro4",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is Solar Pro 4 billed?
Input is $0.195 and output is $0.780 per million tokens; cached input is $0.039. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
524K tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.