Solar Pro 3
Upstage Solar Pro 3 — pricing, 128k context window, API cost calculator and alternatives.
By Upstage
Specs
- Provider
- Upstage
- Slug
- upstage/solar-pro-3
- Capabilities
- tools, json_mode
Pricing freshness
- Tier
- standard
- Currency
- USD
- As of
- 2026-05-08 17:08 UTC
Pricing history
Tracking Solar Pro 3 pricing since 2026-05-08. We'll plot the chart here once it changes.
Quickstart — call Solar Pro 3 from your app
curl https://openrouter.ai/api/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-d '{
"model": "upstage/solar-pro-3",
"messages": [{"role": "user", "content": "Hello!"}]
}'Official docs: https://openrouter.ai/docs
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key=os.environ["OPENROUTER_API_KEY"],
)
resp = client.chat.completions.create(
model="upstage/solar-pro-3",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)Official docs: https://openrouter.ai/docs
// npm install openai
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const resp = await client.chat.completions.create({
model: "upstage/solar-pro-3",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);Official docs: https://openrouter.ai/docs
Related models
Similar capabilities, context window, and price tier — drawn from across the catalog so you can compare alternatives in one click.
Frequently asked questions
What is Solar Pro 3?
Solar Pro 3 is a large language model API from Upstage with a 128k-token context window. It costs $0.15 per 1M input tokens and $0.6 per 1M output tokens.
How much does Solar Pro 3 cost?
Solar Pro 3 is priced at $0.15 per 1M input tokens and $0.6 per 1M output tokens via the Upstage API. A 50/50 input/output workload of 1M total tokens costs about $0.375.
What is the context window of Solar Pro 3?
Solar Pro 3 supports up to 128k tokens of context per request — roughly 256 pages of English text or 16000 lines of code at a typical density.
Does Solar Pro 3 support vision, tool use, or JSON mode?
Solar Pro 3 supports tool/function calling and structured JSON mode. It does not support image input (vision).
Who makes Solar Pro 3?
Solar Pro 3 is built and operated by Upstage. Pricing, context window, and capabilities on this page are refreshed nightly from Upstage's public catalog.
Can I self-host Solar Pro 3?
Solar Pro 3 is API-only — its weights are not publicly distributed by Upstage, so it cannot be self-hosted today.