GPT-6 Astra API free: up to $10 promotional usage
Use the GPT-6 Astra API free with up to $10 in promotional API usage through an independent Anthropic-compatible or OpenAI-compatible gateway. Verify the live catalogue, then connect your application.
Get $5 by connecting Telegram and another $5 by joining the LLMsRelay channel. This free access is promotional usage, not cash or unlimited access.
Open the free usage flow- Model ID
- gpt-6-astra
- Endpoint
- POST /v1/chat/completions
- Authentication
- Authorization: Bearer
Availability is key-dependent. Call GET /v1/models after creating a key; the response is the source of truth for your account.
- 1. Create an account and an API key.
- 2. Call GET /v1/models to confirm the model is enabled.
- 3. Send a request to the model endpoint.
curl https://api.llmsrelay.com/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "content-type: application/json" \
-d '{
"model": "gpt-6-astra",
"messages": [{"role": "user", "content": "Hello"}]
}'Questions about GPT-6 Astra
Is GPT-6 Astra free to use?
LLMsRelay can provide up to $10 in promotional API usage through the reward flow. This is promotional usage, not cash and not unlimited access. Model availability still depends on the API key.
How do I call GPT-6 Astra?
Use POST /v1/chat/completions with model ID gpt-6-astra. First call GET /v1/models because the live catalogue is filtered by key group and account settings.
Which tools and SDKs work?
Use the Anthropic-compatible Messages API for Claude models or the OpenAI-compatible Chat Completions API for GPT-6 Astra. Both work with compatible SDKs after changing the base URL and key.