# GPT-5.6 API prices

GPT-5.6 (gpt-sol) — 1.1M context, 128k max output.
2 metered per-token offers from 2 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| Xpersona | $1.5 | $12 | $0.15 | 372k |
| OpenAI | $4 | $20 | $0.4 | 1.1M |

## Summary

- Cheapest input: $1.5 per 1M tokens (Xpersona)
- Cheapest output: $12 per 1M tokens (Xpersona)
- First-party: $20 per 1M output tokens (OpenAI)
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2026-07-09
- Inputs: image, pdf, text

## FAQ

### What is the cheapest GPT-5.6 API?

As of Oct 4, 2026, Xpersona has the lowest GPT-5.6 output price at $12 per 1M tokens, and Xpersona has the lowest input price at $1.5 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How much does GPT-5.6 cost on OpenAI?

OpenAI charges $4 per 1M input tokens and $20 per 1M output tokens for GPT-5.6.

### How many providers offer GPT-5.6?

2 providers list GPT-5.6 on Sovyron; 2 of them sell it at a metered per-token price.

### Is GPT-5.6 free?

No provider in the Sovyron catalog lists a free tier for GPT-5.6.

### What is the context window of GPT-5.6?

GPT-5.6 supports a 1.1M-token context window and up to 128k output tokens.

HTML page: https://sovyron.com/models/gpt-5-6/
Full dataset: https://sovyron.com/data/catalog.json