# Solar Pro 4 API prices

Solar Pro 4 (solar-pro) — 524k context, 131k max output.
5 metered per-token offers from 5 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| LLMTR | $0.03 | $0.12 | — | 524k |
| NanoGPT | $0.03 | $0.12 | $0.006 | 524k |
| OpenRouter | $0.09 | $0.36 | $0.018 | 524k |
| Kilo Gateway | $0.3 | $1.2 | $0.06 | 524k |
| Upstage | $0.3 | $1.2 | $0.06 | 524k |

## Summary

- Cheapest input: $0.03 per 1M tokens (LLMTR)
- Cheapest output: $0.12 per 1M tokens (LLMTR)
- First-party: not listed separately
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2026-08-06
- Inputs: text

## FAQ

### What is the cheapest Solar Pro 4 API?

As of Oct 4, 2026, LLMTR has the lowest Solar Pro 4 output price at $0.12 per 1M tokens, and LLMTR has the lowest input price at $0.03 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How many providers offer Solar Pro 4?

5 providers list Solar Pro 4 on Sovyron; 5 of them sell it at a metered per-token price.

### Is Solar Pro 4 free?

No provider in the Sovyron catalog lists a free tier for Solar Pro 4.

### What is the context window of Solar Pro 4?

Solar Pro 4 supports a 524k-token context window and up to 131k output tokens.

HTML page: https://sovyron.com/models/solar-pro-4/
Full dataset: https://sovyron.com/data/catalog.json