All OpenAI models

GPT-5.6 Sol Pro

OpenAI · released 1 month ago

GPT-5.6 Sol Pro is a OpenAI model with a 1.05M token context window — about 1,500 pages of text. It reads Files, Images, and Text and replies in Text. It can show its reasoning before it answers.

$5.75

input / 1M tokens

$34.50

output / 1M tokens

1.05M

context — about 1,500 pages

$0.06

a client proposal

Pricing

Input
$5.75 per million tokens
Output
$34.50 per million tokens
Cached input
$0.575 per million tokens
Cache writes
$7.19 per million tokens
Web search
1.1¢ per search
Long-context rate (over 272K)
$11.50 in · $51.75 out, per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
OpenAI
Released
1 month ago (2026-07-09)
Context window
1.05M tokens — about 1,500 pages
Max output
128K tokens per reply
Input
Files, Images, and Text
Output
Text
Reasoning
Shows its thinking before answering
Knowledge cutoff
2026-02-16

Cost vs Token Amount

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80% Input20% Output
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GPT-5.6 Sol Pro

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What a task costs

2K tokens in · 500 tokens out.

GPT-5.6 Sol Pro

OpenAI

2.9¢

for this task

40% input · 60% output

Full pricing →

Your $5 welcome credit covers about 173 of these.

Compare GPT-5.6 Sol Pro

Closest in price on a typical task:

GPT-5.6 Sol Pro vs Fugu Ultra →GPT-5.6 Sol Pro vs GPT Chat Latest →GPT-5.6 Sol Pro vs GPT-5.5 →GPT-5.6 Sol Pro vs GPT-5.6 Sol →Any other combination →

Questions, answered

How much does GPT-5.6 Sol Pro cost on Alyph?

GPT-5.6 Sol Pro costs $5.75 per million input tokens and $34.50 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about $0.06. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is GPT-5.6 Sol Pro's context window?

1.05M tokens — about 1,500 pages. Replies can be up to 128K tokens long. Prompts longer than 272K tokens are billed at the long-context rate.

Can GPT-5.6 Sol Pro read images and files?

GPT-5.6 Sol Pro reads Files, Images, and Text. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does GPT-5.6 Sol Pro show its reasoning?

Yes. GPT-5.6 Sol Pro can expose its thinking before the final answer, so you can watch how it got there.

Test GPT-5.6 Sol Pro against Fugu Ultra

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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