GPT-6 Astra
OpenAI’s GPT-6 Astra peak model (API id gpt-6-astra) for computer use, coding agents, professional artifacts, science, and cybersecurity-adjacent defender workflows. Staged launch 2026-09-03; GPT-5.6 Sol/Terra/Luna remain the volume and cost-routing family.
Vision · Tool calling · Thinking · Coding
Last reviewed: 4 September 2026
Overview
Capabilities
- Vision: Yes
- Audio: No
- Tool calling: Yes
- Thinking: Yes
- MCP: No
- Coding: Yes
- Structured output: Yes
Technical specifications
- Provider
- OpenAI
- License
- Proprietary
- Parameters
- Undisclosed
- Architecture
- Transformer (proprietary)
- Release
- 2026-09
- Modalities
- Text, Image
- Vision
- Yes
- Audio
- No
- Tool calling
- Yes
- Thinking
- Yes
- MCP
- No
- Open weights
- No
- API
- Yes
- Pricing (input)
- ~$10 per 1M tokens (Standard)
- Pricing (output)
- ~$50 per 1M tokens (Standard)
Supported modalities
Text · Image
Context window
Not specified
Pricing
Official OpenAI API Standard rates as of 2026-09-03. Separate cache read/write rates. Fast mode is 2× Standard price for up to 2× Standard speed. Verify openai.com/api/pricing/.
Availability
Rolling out from a limited set of organizations to ChatGPT Plus, Pro, Business, and Enterprise, plus the OpenAI API and AWS. Usage is included in existing ChatGPT subscription allowances with optional extra credits. Pro/Business/Enterprise also get GPT-6 Astra Pro. Enterprise administrators must enable Astra (off by default). Zero Data Retention for eligible API customers. Not supplied to Cursor under OpenAI’s proposed Cursor contract wind-down (shutoff 2026-11-12). Public Astra refuses advanced offensive-cyber tasks; Daybreak access is the gated cyber track.
Use cases
- Computer-use and browser agents
- Long-horizon software engineering and Codex
- Professional documents, slides, and CAD-adjacent workflows
- Scientific analysis with terminal/code tools
Strengths
- OpenAI’s current peak GA/staged flagship above GPT-5.6
- Computer-use and coding-agent focus in the launch report
- API id is stable (gpt-6-astra) with Standard and Fast modes
Limitations
- Closed weights; staged rollout — not universal GA on day one
- Standard API list price is above GPT-5.6 Sol promo rates
- Not available as a Cursor backend; Enterprise off by default
Related guides
Related benchmarks
Related research
- GPT-6 Astra: A new generation of intelligence
Original Paper
Related GitHub
Related tools
Related rankings
Related comparisons
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