GPT-6 Astra API

GPT-6 Astra is a large language model by OpenAI, available on the Venice API as openai-gpt-6-astra. Requests are anonymized, so the provider never sees your identity.GPT-6 Astra is OpenAI’s most capable model, built for the hardest end-to-end work. It is suited for complex reasoning, coding, computer use, research, and document creation, with a 1.05M token context window (922K input, 128K output) and support for text and image inputs.

GPT-6 Astra API pricing

Model ID	Variant	Privacy	Price
`openai-gpt-6-astra`	Standard	Anonymized	$10.00 input /$ 50.00 output per 1M tokens

GPT-6 Astra specifications

Spec	Value
Provider	OpenAI
Released	Sep 5, 2026
Privacy	Anonymized
Context window	1.05M tokens
Max output	125K tokens
Reasoning effort	low, medium, high, xhigh, max

How to use the GPT-6 Astra API

Send requests to POST https://api.venice.ai/api/v1/responses with "model": "openai-gpt-6-astra" and your API key.

curl https://api.venice.ai/api/v1/responses \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai-gpt-6-astra",
    "input": "Explain TEE attestation in two sentences.",
    "reasoning": { "effort": "high" }
  }'

GPT-6 Astra API FAQ

How much does the GPT-6 Astra API cost?

10.00 per 1M input tokens and

50.00 per 1M output tokens, with cached input at $1.00 per 1M. Prices are in USD and can be paid in DIEM at parity.

What is the GPT-6 Astra model ID?

Use openai-gpt-6-astra as the model parameter.

Is the GPT-6 Astra API private?

GPT-6 Astra is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.

What is the context window of GPT-6 Astra?

1.05M tokens of context, with up to 125K output tokens per response.

What does GPT-6 Astra support?

GPT-6 Astra supports function calling, structured outputs, reasoning, image input, web search and prompt caching. Reasoning effort is adjustable with reasoning_effort: low, medium, high, xhigh and max (default high).

Which endpoint does the GPT-6 Astra API use?

Call POST /responses. /chat/completions is also supported. OpenAI reasoning models are designed around the Responses API: reasoning, tool calls and messages come back as typed output items. Venice’s /responses endpoint is in alpha.

Related models

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Claude Fable 5 API: $12.00 input /$ 60.00 output per 1M tokens
Claude Opus 5 API: $6.00 input /$ 30.00 output per 1M tokens
GPT-6 Astra Pro API: $12.50 input /$ 62.50 output per 1M tokens

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