Answer · Agents & Automation
What AI models does ChatGPT Agent use?
ChatGPT Agent runs on Astra (OpenAI), Codex (OpenAI), GPT-5.2 (OpenAI), GPT-5.4 (OpenAI), gpt-5.6 (OpenAI), GPT-6 (OpenAI), gpt-6-astra (OpenAI) and GPT-Live-1 (OpenAI), and routes requests between them.
- Models used
- 8
- Primary model
- Astra
- Public API
- Yes
- Last checked
- 2026-11-04
Model claims are labelled by how we know them: Astra — disclosed, Codex — disclosed, GPT-5.2 — disclosed, GPT-5.4 — disclosed, gpt-5.6 — disclosed, GPT-6 — disclosed, gpt-6-astra — disclosed and GPT-Live-1 — disclosed. "Disclosed" means the vendor says so in public; "inferred" means it was derived from documentation, headers or release notes.
Context window: 196K tokens.
Other stack signals: node, python, go, java, websockets and webrtc.
Cite this answer
Tomorrow. “What AI models does ChatGPT Agent use?” Tomorrow AI & Emerging Tech Index, AlienSquad, updated 2026-11-04. https://tomorrow.aliensquad.ai/q/what-models-does-operator-use
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