OpenAI
GPT-6 Astra
GPT-6 Astra is a OpenAI model with 1.05M context, $10 in / $50 out per million tokens, last verified September 5, 2026. Open weights: no. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.
GPT-6 Astra is OpenAI's computer-use flagship — the first model it gates at the Preparedness Framework's 'Critical' cybersecurity threshold, trained on >100,000 GPUs at Stargate.
Catalog record checked September 5, 2026Individual provider fields may change
| Specification | GPT-6 Astra |
|---|---|
| Provider | OpenAI |
| Tier | Frontier |
| Context window | 1.05M |
| Max output | 128K |
| Input / 1M tokens | $10 |
| Output / 1M tokens | $50 |
| Weights | Closed |
| Parameters | computer-use flagship |
| Reasoning levels | low, medium, high, xhigh, max |
| Modalities | text, image |
| API model id | gpt-6-astra |
| Released | September 3, 2026 |
Pricing tiers: Standard $10/$50 per MTok (≤272K context); >272K input billed $20/$75 (Fast mode output $100). Cached input $1/MTok; Fast mode is 2x price for ~2.5x speed. Knowledge cutoff Apr 30 2026. Rolling out over several days from 2026-09-03; Enterprise tenants get it disabled by default.
Verified evidence
Published benchmark results
Each result keeps its source and measurement date visible. A missing benchmark is not treated as a zero.
| Benchmark | Score | Measured | Source |
|---|---|---|---|
| Artificial Analysis Intelligence Index [max] | 61.2 | 2026-09-03 | Artificial Analysis · View source |
| DeepSWE 1.1 | 74.1 | 2026-09-03 | OpenAI · View source |
| OSWorld 2.0 (offline) | 72.6 | 2026-09-03 | OpenAI · View source |
| GPQA Diamond | 96 | 2026-09-03 | OpenAI GPT-6 Astra launch chart (vendor; transcribed by Vellum) · View source |
| Humanity's Last Exam | 57.2 | 2026-09-03 | OpenAI GPT-6 Astra launch chart (vendor, with tools; transcribed by Vellum) · View source |
| Terminal-Bench 2.1 | 87.4 | 2026-09-03 | Terminal-Bench official leaderboard (independent, native harness, high effort; captured 2026-09-03 — the live board has since moved to Terminal-Bench 4.0) · View source |
| Terminal-Bench 2.1 | 89.9 | 2026-09-05 | Artificial Analysis Terminal-Bench v2.1 (independent, Terminus 2 harness — conflicts with tbench.ai 87.4; harness difference preserved) · View source |
Best for
- Computer-use agents
- Agentic coding
- Hard reasoning
Watch out
History
GPT-6 Astra timeline
Release and status events for this model that passed two-source verification — dated, sourced, and linked.
- GPT-6 AstraReleaseSeptember 3, 2026
OpenAI launches GPT-6 Astra, its computer-use flagship and the first model gated at the Preparedness Framework's 'Critical' cybersecurity threshold — $10/$50 per MTok with a 1.05M-token context, 61.2 on the AA Intelligence Index and a self-reported 74.1% on DeepSWE 1.1.
OpenAI — Introducing GPT-6 Astra
Source receipts
Catalog figures for this model were checked against the following sources.
- OpenAI — Introducing GPT-6 Astra (accessed 2026-09-03)
- OpenAI API pricing (gpt-6-astra $10/$50) (accessed 2026-09-03)
- CNBC — OpenAI launches GPT-6 Astra (accessed 2026-09-03)
- OpenAI model docs — gpt-6-astra (128K max output, effort levels) (accessed 2026-09-05)
Common questions
GPT-6 Astra
Answered from the verified figures on this page rather than general guidance.
How much does GPT-6 Astra cost per million tokens?
GPT-6 Astra is listed at $10 per million input tokens and $50 per million output tokens at standard rates. Output tokens usually dominate real bills, so weigh the output rate more heavily than the input rate. Standard $10/$50 per MTok (≤272K context); >272K input billed $20/$75 (Fast mode output $100). Cached input $1/MTok; Fast mode is 2x price for ~2.5x speed. Knowledge cutoff Apr 30 2026. Rolling out over several days from 2026-09-03; Enterprise tenants get it disabled by default.
What is GPT-6 Astra's context window?
GPT-6 Astra accepts about 1.05M tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is GPT-6 Astra best for?
GPT-6 Astra is a frontier tier from OpenAI. It suits computer-use agents, agentic coding, hard reasoning. Gated at the 'Critical' cyber threshold and disabled by default for Enterprise; long-context work bills $20/$75 above 272K input tokens.