available

OpenAI: GPT-5.6 Sol Pro

openai/gpt-5-6-sol-pro

Prices

Input: $4.00 per 1M tokens
medium
Input (>272k ctx): $8.00 per 1M tokens
medium
Input (cache write, >272k ctx): $10.00 per 1M tokens
medium
Input (cache write): $5.00 per 1M tokens
medium
Input (cached read, >272k ctx): $0.80 per 1M tokens
medium
Input (cached read): $0.40 per 1M tokens
medium
Output: $20.00 per 1M tokens
medium
Output (>272k ctx): $30.00 per 1M tokens
medium

Also available on

The same model, sold by someone else. The price above is the maker's own.

4 sales channels for this model.
Channel	What	Price
OpenRouter · openai	Input	$4.00 per 1M tokens
	Input (cache write)	$5.00 per 1M tokens
	Input (cached read)	$0.40 per 1M tokens
	Output	$20.00 per 1M tokens
	Query	$0.01 per query
Other · kilo	Input	$4.00 per 1M tokens
	Input (cache write)	$5.00 per 1M tokens
	Input (cached read)	$0.40 per 1M tokens
	Output	$20.00 per 1M tokens
Other · nano-gpt	Input	$2.00 per 1M tokens
	Input (cache write)	$2.50 per 1M tokens
	Input (cached read)	$0.20 per 1M tokens
	Output	$10.00 per 1M tokens
Other · openrouter	Input	$2.00 per 1M tokens
	Input (>272k ctx)	$4.00 per 1M tokens
	Input (cache write, >272k ctx)	$5.00 per 1M tokens
	Input (cache write)	$2.50 per 1M tokens
	Input (cached read, >272k ctx)	$0.40 per 1M tokens
	Input (cached read)	$0.20 per 1M tokens
	Output	$10.00 per 1M tokens
	Output (>272k ctx)	$15.00 per 1M tokens

Specifications

Provider: openai
Context window: 1,050,000
Max output tokens: 128,000
Open weights: no
Released: 07/09/2026
Retires: no date announced
First seen by this tracker: 09/14/2026

Price history

Input — per 1M tokens

Recorded changes for Input
From	Amount
09/14/2026	2
09/29/2026	4

Output — per 1M tokens

Recorded changes for Output
From	Amount
09/14/2026	10
09/29/2026	20

Input (cached read) — per 1M tokens

Recorded changes for Input (cached read)
From	Amount
09/14/2026	0.2
09/29/2026	0.4

Input (cache write) — per 1M tokens

Recorded changes for Input (cache write)
From	Amount
09/14/2026	2.5
09/29/2026	5

Input (>272k ctx) — per 1M tokens

Recorded changes for Input (>272k ctx)
From	Amount
09/14/2026	4
09/29/2026	8

Output (>272k ctx) — per 1M tokens

Recorded changes for Output (>272k ctx)
From	Amount
09/14/2026	15
09/29/2026	30

Input (cached read, >272k ctx) — per 1M tokens

Recorded changes for Input (cached read, >272k ctx)
From	Amount
09/14/2026	0.4
09/29/2026	0.8

Input (cache write, >272k ctx) — per 1M tokens

Recorded changes for Input (cache write, >272k ctx)
From	Amount
09/17/2026	5
09/29/2026	10

Last updated 10/03/2026, 02:10