GPT-6 Astra
OpenAI's 3 Sep 2026 flagship and the first model in the GPT-6 generation. Joint #1 on the Artificial Analysis Intelligence Index v4.3 at launch at 53, tied with Claude Fable 5.1 (both since passed by Claude Opus 5.5 at 58 and Claude Sonnet 5.5 at 56 on v4.3.2) — but at roughly a third of Fable's cost per task ($3.26 vs $7.63 at max effort), because it reaches the same score with markedly fewer steps and fewer output tokens. Trained on OpenAI's largest run to date, over 100,000 GPUs at the Stargate site in Texas, and the first OpenAI model to use other models in a significant supervisory role during training. Set a record on DeepSWE v1.1 at 74%. Context is 1,050,000 tokens but the shape matters: 922K maximum input, 128K maximum output, and requests above 272K input tokens bill at 2x input and 1.5x output for the entire request, not just the overflow — a cliff that a million-token window actively invites you to walk off. Five reasoning-effort levels (low through max) act as a cost dial: 53/51/50/46 at max/high/medium/low against $3.26/$1.72/$1.54/$0.82 per task, which makes medium the sensible default for most workloads. Batch and Flex run at half the standard rate; Fast mode doubles it. Chat Completions, Responses and Batch only — no Realtime, Assistants, audio, embeddings or moderation. First OpenAI model to reach the company's internal 'Critical' cybersecurity threshold, scoring 100% on ExploitBench and finding two zero-days in a modified run, so the advanced cyber capabilities are access-gated via the Daybreak programme. Note for compliance teams: the model uses opaque recurrence, which OpenAI's chief scientist has said makes chain-of-thought auditing harder.
1M
tokens
128K
tokens
$10
per 1M tokens
$50
per 1M tokens
53
tokens/sec
Sep 2026
2026-09-03
$30.00
per 1M tokens
3.3
quality per $
Capabilities
Benchmarks
Price vs Quality
Context Window in Context
- ▸ GPT-6 Astra1.1M
- GPT-5.6 Sol1.1M
- GPT-5.6 Terra1.1M
- GPT-5.6 Luna1.1M
- GPT-6.1 Sol1.1M
- GPT-6 Sol1.1M
- GPT-6 Luna1.1M
- Kimi K31.0M
尚未接入我们的网关
Swfte Connect 尚未持有 GPT-6 Astra 的密钥，因此这里没有可运行的内容。添加你自己的提供商密钥，就能用与本目录中其他模型相同的 API 调用它。
curl https://api.swfte.com/agents/v2/gateway/chat/completions \
-H "Authorization: Bearer $SWFTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai:gpt-6-astra",
"messages": [{"role": "user", "content": "Hello"}]
}'About GPT-6 Astra
GPT-6 Astra is a flagship AI model by OpenAI, released on September 3, 2026. It supports a context window of 1050K tokens and can generate up to 128K output tokens.
At $10 per million input tokens and $50 per million output tokens, its blended cost of $30.00/1M tokens places it in the premium pricing tier. Its value score of 3.3 reflects the balance of quality and cost.
Using GPT-6 Astra with Swfte
Access GPT-6 Astra through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GPT-6 Astra in our AI Playground before integrating.