ThinkFacility Sign in

AI models · OpenAI

GPT-5.6 Sol: release date and what it's for

Released , according to OpenAI's announcement. Last generation's top model. GPT-6 Sol is a separate, cheaper model, so check which Sol a benchmark means. OpenAI says this promotional price holds until at least November 21, 2026.

Status
Live
Released
Lab
OpenAI
Input
$4per million tokens
Output
$20per million tokens
Context window
1.05Mtokens
Max output
128Ktokens

API model ID: gpt-5.6-sol

What is GPT-5.6 Sol capable of?

6 posts from people showing what they made with GPT-5.6 Sol, newest and most-reacted first. People are posting game, image, music and code made with it.

GameVideoX
Video from X. Loads here.

Raphi-2Code (@R2Cdev_) on X

ImageVideoReddit
Video from Reddit. Loads here.

See the post on Reddit

DemoVideoX
Video from X. Loads here.

Misato (@misat0x) on X

MusicImageReddit
Image from Reddit. Loads here.

See the post on Reddit

CodeImageReddit
Image from Reddit. Loads here.

See the post on Reddit

DataImageReddit
Image from Reddit. Loads here.

See the post on Reddit

Each card is the original post, shown the way X or Reddit embeds it, with a link to where it came from. We picked the ones that show something being made and skipped the benchmark screenshots. We can't vouch for any of them being unedited.

Demos from every model

What we've written about GPT-5.6 Sol

October 16, 2026

OpenAI says its model paid from a crypto wallet it wasn't given, and didn't say so

The model asked itself whether spending the funds was ethical, then decided test-network tokens didn't count.

October 7, 2026

OpenAI puts GPT-6 in ChatGPT for everyone, and its answers can now include charts and buttons

Ask ChatGPT for a bill splitter and it builds one in the chat, though free users wait a day.

September 28, 2026

UK testers say GPT-6 Astra ran unsanctioned supply-chain attacks in 29% of simulated cyber tests

In a simulated cyber test, the model made fake identities to get malicious code past human reviewers, and sometimes treated an automated reply as permission.

September 23, 2026

Codex models and plans explained: GPT-6 Astra, Sol and Luna, and which plan gets which

Pick any GPT-6 model you like on your laptop, but a Codex cloud task on a ChatGPT plan still runs on last generation's Sol.

September 23, 2026

Claude Code vs Codex vs Gemini CLI: which plan you need and which models you get

One of the three stopped serving individual subscribers in June, but its own docs still advertise the free tier it closed.

September 23, 2026

Grok 4.7, Grok 4.8 and Grok Build: which Grok is out and what each one is for

Grok 4.7 shipped ten days after Musk said it needed a few more days, and the next one has a size but no date.

September 23, 2026

OpenAI model release dates: o3, GPT-5.5 and GPT-6 Astra, Sol and Luna in order

o3 is from April 2025, and the name Sol now means something different from what it meant in July.

September 22, 2026

Xiaomi's MiMo-V2.6-Pro tops the open-weights index, but its own table puts Opus 5 ahead

Xiaomi trained it with one reinforcement learning run across coding, agents, vision and cybersecurity, and put the weights on Hugging Face under MIT.

How GPT-5.6 Sol compares on price and context

Price per million tokens

inputoutput

  1. GPT-6 Astra$10 / $50
  2. Claude Fable 5.1$10 / $50
  3. GPT-5.6 Sol$4 / $20
  4. GPT-6 Sol$2 / $10
  5. Muse Spark 1.3$1.25 / $4.25
  6. Gemini 3.8 Flash$0.75 / $3.75
  7. GPT-6 Luna$0.10 / $0.50
Context window, in tokens

how much it reads at once

  1. GPT-5.6 Sol1.05M
  2. GPT-6 Sol1.05M
  3. GPT-6 Luna1.05M
  4. GPT-6 Astra1.05M
  5. Muse Spark 1.31.05M
  6. Gemini 3.8 Flash1.05M
  7. Claude Fable 5.11M

Next to the newest OpenAI models and the current model from other labs. Prices are in US dollars per million tokens.

What is GPT-5.6 Sol?

GPT-5.6 Sol is a model from OpenAI, built in the US. It's out, and you can use it today.

When did GPT-5.6 Sol come out?

OpenAI released it on July 9, 2026. That date comes from OpenAI's announcement.

More from OpenAI

OpenAILive

GPT-6 Sol

in /1M
$2
out /1M
$10
context
1.05M
OpenAILive

GPT-6 Luna

in /1M
$0.10
out /1M
$0.50
context
1.05M
OpenAILive

GPT-6 Astra

in /1M
$10
out /1M
$50
context
1.05M
OpenAILive

GPT-5.6 Luna

in /1M
$0.20
out /1M
$1.20
context
1.05M
OpenAILive

GPT-5.5 Pro

in /1M
$30
out /1M
$180
context
1.05M
OpenAILive

GPT-5.5

in /1M
$5
out /1M
$30
context
1.05M
OpenAILive

GPT-5.4 nano

in /1M
$0.20
out /1M
$1.25
context
400K
OpenAILive

GPT-5.4 Mini

in /1M
$0.75
out /1M
$4.50
context
400K

More news: OpenAI news and ChatGPT updates

.