GPT-5.6 Cyber
OpenAI's cyber-focused model for security defenders, available only to developers through access controls, and able to help find and exploit software weaknesses.
Key facts
- Released
- Aug 11, 2026
- What it does
- Text and chat: Writes, answers questions and holds a conversation.Code: Writes, explains and fixes code.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Sees images: Understands pictures, screenshots and charts you share with it.
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- Knowledge cutoff
- February 2026 · the latest events it learned about
- How
- For developers, through an API
- Announced as
- “Expanding Daybreak as the Cyber Defense Window Narrows”
From trckr's archive of releases before it started watching. Date and details from Epoch AI's database of AI models (CC BY 4.0).
Price and limits
What developers pay to use it through the API: How developers plug a model into their own apps and pay per use. A model that's "in the API" can be used by programmers, even if it isn't in a chat app yet., per million Tokens: The small chunks of text a model reads and writes, about three-quarters of a word each. Prices and limits are counted in tokens. sent (input) or written back (output), and how much it can take in at once.
- Input
- $12.50
- per million tokensCached: $1.25
- Output
- $75.00
- per million tokens
- Context window: How much a model can keep in mind at once: your question, any files you share and its own replies. Measured in tokens; 1,000 tokens is about 750 words.
- 400K tokens
- about 300,000 words
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- Longest answer
- 128K tokens (about 96,000 words)
From the lab's own listing on models.dev, checked .
Compare GPT-5.6 Cyber with
It came out 33 days after GPT-5.6 Terra, the lab's previous model.
The details
Model ID: The exact name developers type to use a model, like gpt-5-mini. New IDs often show up in a lab's systems before the official announcement, which is how trckr spots many releases early.
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/OpenAI models pageOfficialFirst signal
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/OpenAI models pageOfficial
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