Specialist modelLimited access
GPT-5.6 Cyber
OpenAI
- Released
- August 7, 2026
- Data date
- October 3, 2026
GPT-5.6 Cyber is OpenAI’s API model for authorized vulnerability research, exploit validation, and security testing. The model documentation lists a 400,000-token context and up to 128,000 output tokens.
The gpt-5.6-cyber API endpoint requires separate approval and provisioning through the Daybreak program. OpenAI lists $12.50 per 1M input tokens, $1.25 for cached input, and $75 for output.
Specifications and access
| Specification | Value and source |
|---|---|
| API model ID | gpt-5.6-cyberSource |
| Model class | Cyber specialist model for authorized security workSource |
| Access | Daybreak program with separate approval and provisioningSource |
| Context window | 400,000 tokensSource |
| Maximum output | 128,000 tokensSource |
| Announcement | OpenAI describes the use as authorized security workSource |
Sources and data date
Every statement links to its underlying documentation or leaderboard.
| Type | Evidence and data date |
|---|---|
| Research status | Research date October 4, 2026. 2 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not published | quality-benchmark Original wording The 95.0% Advanced Cybersecurity Completion Rate measures answered or completed requests, not answer quality, pass@1, or exploit success. It is excluded from benchmark data. |
| Additional source | OpenAI GPT-5.6 Cyber API model page (retrieved October 3, 2026; October 4, 2026) · OpenAI GPT-5.6 Cyber API model page · Editorial description reviewed October 3, 2026 |
| Additional source | OpenAI Daybreak announcement (retrieved October 3, 2026; October 4, 2026) · OpenAI Daybreak announcement · Editorial description reviewed October 3, 2026 |