GPT-6 AstraAPI
OpenAI's newest flagship — frontier reasoning and long-horizon agentic coding.
Input price
$4.00
per 1M tokens
Output price
$20.00
per 1M tokens
Prompt caching
Pass cache_control on a stable prefix and cache hits bill at a fraction of input. Cache writes bill at the plain input rate.
Auto-derived from input × 0.2
Specs
- Model ID
gpt-6-astra- Endpoint
POST /v1/chat/completions- Category
- Text
- Provider
- OpenAI
- Context window (tokens)
- 1,050,000
- Max output (tokens)
- 128,000
- Capabilities
- functionstreamingthinkinglong-context
Drop-in OpenAI compatibility
Point your existing OpenAI SDK at api.kunavo.com/v1 and swap the model id. No streaming changes, no SDK changes.
View docsGPT API pricing guideTry it
Set KUNAVO_API_KEY from /app/keys, then run any of the snippets below.
curl https://api.kunavo.com/v1/chat/completions \
-H "Authorization: Bearer $KUNAVO_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-6-astra",
"messages": [
{"role": "user", "content": "Hello, GPT-6 Astra"}
],
"stream": false
}'Kunavo vs calling OpenAI directly
Same GPT-6 Astra weights, same responses. What a gateway changes is the account, the SDK and the bill — here is the honest side-by-side.
| Kunavo | OpenAI direct | |
|---|---|---|
| Price (per 1M tokens) | $4.00 / $20.00 (−60%) | $10.00 / $50.00 |
| Account | One Kunavo account, key in 2 minutes, $10 minimum top-up | A OpenAI account plus its own billing setup |
| SDK | Keep the OpenAI SDK — change base_url, set model to "gpt-6-astra" | OpenAI's SDK, or their OpenAI-compatible layer where offered |
| Same key also reaches | Claude, Gemini, GPT, image, video and audio models | OpenAI's own catalog only |
| Billing | One Stripe balance, pay-as-you-go, never expires; failed requests unbilled | A separate invoice per provider |
| Rate limits | Shared gateway capacity, no contractual per-account limit | OpenAI's own tier limits, raised by usage history or contract |
Go direct to OpenAI when you need a contractual rate limit, an enterprise SLA, or a provider-only feature on day one. Use Kunavo when you want one key, one bill and a lower per-token rate across every provider.
FAQ
How much does GPT-6 Astra cost?
On Kunavo, GPT-6 Astra is $4.00 per 1M input tokens and $20.00 per 1M output tokens — about 60% under OpenAI's official price. Failed requests are never billed, and it's pay-as-you-go — you only pay for successful calls.
Can I call GPT-6 Astra with the OpenAI SDK?
Yes. Set base_url to https://api.kunavo.com/v1, pass your Kunavo key, and set model to "gpt-6-astra". Requests and responses are OpenAI-compatible.
What endpoint does GPT-6 Astra use?
GPT-6 Astra is called via POST /v1/chat/completions on Kunavo's OpenAI-compatible API.
What is GPT-6 Astra good for?
GPT-6 Astra is a text model from OpenAI, with support for function, streaming, thinking, long-context.
What is different from calling OpenAI directly?
The model is the same, at about 60% under OpenAI's list price. What changes is around it: one key and one Stripe balance instead of a OpenAI account with its own billing, the OpenAI SDK with base_url swapped instead of a provider-specific SDK, and the same key also reaching Claude, Gemini, GPT, image, video and audio models. The tradeoff is that gateway capacity is shared — if you need a contractual rate limit or an enterprise SLA on GPT-6 Astra specifically, go direct to OpenAI.
Is GPT-6 Astra cheaper on Kunavo?
Yes — GPT-6 Astra is about 60% under OpenAI's official list price on Kunavo, with no subscription and no minimum monthly spend. You pay per token from a $10 top-up, failed requests are never billed, and the balance never expires.