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OpenAIChatgpt-6-astra

GPT-6 Astra

OpenAI's most capable model for the hardest end-to-end work.

GPT-6 Astra is OpenAI's flagship, built for work that has to run from start to finish on its own: deep reasoning, heavy tool use, and long, complicated tasks.

  • Hardest problems
  • End-to-end work
  • Deep reasoning
Get your API keyTry in playgroundCompare models

Model details

Context window
1.1M tokens
Max output
128K tokens
Input
Text, images
Output
Text
Capabilities
Reasoning, Vision, Tool calling, Streaming, JSON output
Interfaces
OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses

Pricing

Prices use the units shown below. No gateway fees. Usage, size and model options may affect the total.

GPT-6 Astra pricing.
MetricPrice
/ 1M input tokens$10
/ 1M output tokens$50
/ 1M cached input tokens$1
/ 1M cache write tokens (5 min)$12.5
/ web search$0.01
/ 1M input tokens · Up to 272K input tokens$10
/ 1M output tokens · Up to 272K input tokens$50
/ 1M cached input tokens · Up to 272K input tokens$1
/ 1M cache write tokens (5 min) · Up to 272K input tokens$12.5
/ 1M input tokens · Above 272K input tokens$20
/ 1M output tokens · Above 272K input tokens$75
/ 1M cached input tokens · Above 272K input tokens$2
/ 1M cache write tokens (5 min) · Above 272K input tokens$25

Why teams pick it

  • OpenAI's most capable model for demanding work
  • Reasoning and tool use built in, with adjustable effort
  • Over 1M tokens of context

Call GPT-6 Astra

GPT-6 Astra answers on any of the APIs below — pick the one your code already speaks and just swap in your Cloakray key.

/v1/chat/completionsOpenAI-style Chat Completions · openai SDK or plain HTTP
curl https://api.cloakray.com/v1/chat/completions \
  -H "Authorization: Bearer ckr_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-6-astra",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'
/v1/messagesAnthropic-style Messages · @anthropic-ai/sdk SDK or plain HTTP
curl https://api.cloakray.com/v1/messages \
  -H "Authorization: Bearer ckr_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-6-astra",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ]
}'
/v1/responsesOpenAI-style Responses · openai SDK or plain HTTP
curl https://api.cloakray.com/v1/responses \
  -H "Authorization: Bearer ckr_..." \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-6-astra",
  "input": "Hello"
}'

Conversation compaction is also available at POST /v1/responses/compact.

More from OpenAI

GPT-6.1 SolNear-Astra performance at a fraction of the price.$2 / 1M input tokens · $10 / 1M output tokens · See all rates on the model pageGPT-6.1 TerraFast GPT-6.1 for visual reasoning, computer use, and writing.$1 / 1M input tokens · $5 / 1M output tokens · See all rates on the model pageGPT-6 SolGPT-6 reasoning at a price for everyday production work.$2 / 1M input tokens · $10 / 1M output tokens · See all rates on the model page