OpenRouter

OpenRouter: Solar Pro 4 (OpenRouter)

stable

Solar Pro 4 (OpenRouter) is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

upstage-solar-pro4solarreleased Aug 10, 2026
ProviderQuick start
Context
524.3K
tokens
Max output
131.1K
tokens
Input
$0.030
per 1M
Output
$0.12
per 1M

Activity

Daily period usage
Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M
OpenRouter
OpenRouter
524.3K$0.030$0.12

Pricing

ItemPriceUnit
Input$0.030per 1M tokens
Output$0.12per 1M tokens
Cache read$0.006per 1M tokens

Performance

Reliability

Compare

Compare usage and performance
Place this model beside up to three other catalog models.

Capabilities

Capabilities
Modalities
Input
Output
Details
Model ID
upstage-solar-pro4
Family
solar
Status
stable
Knowledge
-
Released
Aug 10, 2026
Gateway Config
API
2024-01-01
Auth
OPENROUTER_API_KEY
Discovery
dynamic
Provider type
meta

Quick Start

index.ts
import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@openrouter/upstage-solar-pro4",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL
https://openrouter.ai/api/v1
Chat completions
https://openrouter.ai/api/v1/chat/completions
Model
upstage-solar-pro4
Auth env
OPENROUTER_API_KEY

Solar Pro 4 (OpenRouter) FAQ

How much does the Solar Pro 4 (OpenRouter) API cost?

Through OpenRouter, Solar Pro 4 (OpenRouter) costs $0.030 per 1M input tokens and $0.12 per 1M output tokens.

What is the context window of Solar Pro 4 (OpenRouter)?

Solar Pro 4 (OpenRouter) accepts up to 524.3K tokens of context and returns up to 131.1K output tokens on OpenRouter.

What can Solar Pro 4 (OpenRouter) do?

Solar Pro 4 (OpenRouter) supports chat, function calling and reasoning. It accepts text input.

How do I call Solar Pro 4 (OpenRouter) through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @openrouter/upstage-solar-pro4. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.