🚀 One API for every frontier model on FastInfra

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Transparent per-token pricing → compare providers on FastInfra

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OpenAI-compatible chat completions → start in minutes

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Solar Pro4 API

Run upstage/solar-pro4 through FastInfra's API. Pay per token, no subscription, routed to the cheapest available provider.

Pricing

Solar Pro4 pricing

Billed per token used. Prices sync automatically from wholesale providers.

Direction Price per 1M tokens
Input$0.03
Output$0.13
Availability

1 route available

Requests route to route-07 by default (lowest cost). FastInfra fails over automatically if a route is unavailable.

Route label Model ID
route-07 upstage/solar-pro4
Quickstart

Call Solar Pro4 in 30 seconds

Works with any OpenAI SDK — change the base URL and API key only.

Python

from openai import OpenAI

client = OpenAI(api_key="YOUR_API_KEY", base_url="https://api.fastinfra.ai/v1")

response = client.chat.completions.create(
    model="upstage/solar-pro4",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

curl

curl https://api.fastinfra.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "upstage/solar-pro4",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
FAQ

Solar Pro4 — common questions

How much does the upstage/solar-pro4 API cost?

On FastInfra, upstage/solar-pro4 costs $0.0315/1M input, $0.126/1M output tokens. Billing is per token used, with no subscription.

Is upstage/solar-pro4 compatible with the OpenAI SDK?

Yes. FastInfra exposes upstage/solar-pro4 through an OpenAI-compatible endpoint at https://api.fastinfra.ai/v1 — point any OpenAI SDK at that base URL with a FastInfra API key and keep your existing code.

How does routing work for upstage/solar-pro4?

upstage/solar-pro4 is available on 1 route(s): route-07. Requests use route-07 by default (lowest cost). FastInfra fails over automatically if a route is unavailable.