# GPT-6 Astra MCP and API - Chat model by OpenAI | FlyMy.AI

> OpenAI GPT-6 Astra is the flagship GPT-6 reasoning model for the hardest coding, research and agent tasks, with image input and a 1.05M-token context.

Page: https://flymy.ai/mcp/models/gpt-6-astra/

MCP / Models / Language models

# GPT-6 Astra MCP: hardest coding and research with no API key

OpenAI GPT-6 Astra is the flagship GPT-6 reasoning model for the hardest coding, research and agent tasks, with image input and a 1.05M-token context. Run it from Claude Code, Codex, Cursor or any MCP client through one FlyMy.AI MCP, or call its API.

[Use GPT-6 Astra](https://flymy.ai/mcp/models/gpt-6-astra/#start) [Inputs and price](https://flymy.ai/mcp/models/gpt-6-astra/#inputs)

No API key, $10.00 / $50.00 per 1M tokens, Chat model, OpenAI, Commercial use

$ YOUR NEXT RUN

Claude Code, Codex, Cursor, Any agent

## Use GPT-6 Astra in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

```
Read https://flymy.ai/skill.md and https://flymy.ai/mcp/models/gpt-6-astra.md. Help me connect the FlyMy.AI MCP to this assistant, then run GPT-6 Astra (flymyai/gpt-6-astra) for this task: Ask GPT-6 Astra: write unit tests for this Python module.
```

[Open FlyMy.AI](https://app.flymy.ai/new-agent) [Download brief](https://flymy.ai/mcp/models/gpt-6-astra.md)

## What GPT-6 Astra does

It always reasons. Send a prompt, or a chat history in messages with images as image_url parts, and get a text answer of up to 128K tokens from a 1.05M-token context. reasoning_effort is low, medium, high, xhigh or max; system_prompt and max_tokens work as usual, and private_mode keeps the prompt and answer out of FlyMy.AI storage. Your FlyMy.AI key also works on OpenAI's own Responses and Chat Completions APIs at the model's FlyMy.AI address, so the official OpenAI SDK runs once you change its base URL; function tools run on the Responses API only. Billing follows the tokens OpenAI reports, at OpenAI's own price. Tools OpenAI runs itself, such as web search, are not offered.

Guide: [LLM API: GPT, Claude and Gemini with One Key](https://flymy.ai/blog/llm-api-gpt-claude-gemini/)

## GPT-6 Astra inputs

Every input of `flymyai/gpt-6-astra` as its live schema lists them. Returns `output` (string), `finish_reason` (string), `stream_details` (string).

| Input | Type, values and default |
|---|---|
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-prompt) `prompt` | string required What to ask GPT-6 Astra |
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-messages) `messages` | string optional Chat history as a JSON array of {role, content}; used instead of the prompt |
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-system_prompt) `system_prompt` | string optional Instructions for the whole chat |
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-reasoning_effort) `reasoning_effort` | string optional Allowed: low, medium, high, xhigh, max How much effort GPT-6 Astra puts into the answer, reasoning included |
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-max_tokens) `max_tokens` | integer optional Allowed: 1 to 128000 Most tokens to generate, reasoning included |
| [#](https://flymy.ai/mcp/models/gpt-6-astra/#input-private_mode) `private_mode` | boolean optional Default: `false` Keep the prompt and the answer out of FlyMyAI storage and logs (synchronous requests only) |

## Ask your agent

Requests to paste as they are, once the FlyMy.AI MCP is connected.

**“Ask GPT-6 Astra: write unit tests for this Python module.”** runs `flymyai/gpt-6-astra`

**“Compare these two product specs in a table with GPT-6 Astra.”** runs `flymyai/gpt-6-astra`

**“With GPT-6 Astra, rewrite this landing page paragraph to be shorter and clearer.”** runs `flymyai/gpt-6-astra`

## GPT-6 Astra price

$10.00 per 1M input tokens, $50.00 per 1M output tokens, cached input $1.00 per 1M, cache writes $12.50 per 1M ($25.00 kept longer); a prompt over 272,000 tokens costs $20.00 / $75.00 per 1M. Cached input is $1.00 per 1M tokens. Billed to your FlyMy.AI balance; no seats, no subscription and no minimum.

[See usage pricing →](https://flymy.ai/pricing/)

## Call GPT-6 Astra from code

The same model, from an agent or from your own code. Keys stay in your FlyMy.AI account.

### From an agent, through the MCP

The agent calls `get_model_schema`, then `run_model` with:

```
{
  "endpoint_id": "flymyai/gpt-6-astra",
  "input": {
    "prompt": "Explain in two sentences what an MCP server is."
  }
}
```

### From your code, over HTTP

Form fields, not JSON; files go as uploads or public URLs. Text models answer on the streaming route.

```
curl -X POST https://api.flymy.ai/api/v1/flymyai/gpt-6-astra/predict/stream/ \
  -H "X-API-KEY: $FLYMYAI_API_KEY" \
  -F 'prompt=Explain in two sentences what an MCP server is.'
```

### With the OpenAI SDK

GPT-6 Astra also answers the OpenAI Chat Completions protocol.

```
from openai import OpenAI

client = OpenAI(base_url="https://api.flymy.ai/api/v1/flymyai/gpt-6-astra/openai/v1", api_key="YOUR_FLYMYAI_KEY")
reply = client.chat.completions.create(
    model="flymyai/gpt-6-astra",
    messages=[{"role": "user", "content": "Explain in two sentences what an MCP server is."}],
)
print(reply.choices[0].message.content)
```

## Questions about GPT-6 Astra

**Do I need a OpenAI API key for GPT-6 Astra?**

No. GPT-6 Astra runs on FlyMy.AI's account, so you need no OpenAI key or plan: sign in to FlyMy.AI once and each run is billed to your FlyMy.AI balance.

**How much does GPT-6 Astra cost?**

$10.00 per 1M input tokens, $50.00 per 1M output tokens, cached input $1.00 per 1M, cache writes $12.50 per 1M ($25.00 kept longer); a prompt over 272,000 tokens costs $20.00 / $75.00 per 1M. There is no subscription or minimum; the price comes from FlyMy.AI billing and was checked on 2026-11-12.

**How do I use GPT-6 Astra in Claude Code, Codex or Cursor?**

Add the FlyMy.AI MCP with one command and sign in, then ask in plain words, for example: "Ask GPT-6 Astra: write unit tests for this Python module." Your agent reads the inputs with get_model_schema and runs flymyai/gpt-6-astra with run_model.

**What does GPT-6 Astra need as input?**

GPT-6 Astra requires prompt; it also takes 5 optional inputs, each listed on this page with its allowed values and default.

**Can I call GPT-6 Astra from my own code?**

Yes. Send form fields to https://api.flymy.ai/api/v1/flymyai/gpt-6-astra/predict/stream/ with your FlyMy.AI API key in the X-API-KEY header; it also answers the OpenAI Chat Completions protocol at https://api.flymy.ai/api/v1/flymyai/gpt-6-astra/openai/v1.

## More language models models

Chat and reasoning models for code, documents and agents, plus typed decisions for routing and triage.

### GPT-6 Luna

OpenAI's lowest-priced GPT-6 model for bulk work, with reasoning you can switch off.

Chat model / $0.10 / $0.50 per 1M tokens

Link: https://flymy.ai/mcp/models/gpt-6-luna/

### GPT-6.1 Sol

The newer GPT-6.1 Sol for coding, agents and knowledge work, with a 1.05M-token window.

Chat model / $2.00 / $10.00 per 1M tokens

Link: https://flymy.ai/mcp/models/gpt-6-1-sol/

### GPT-6.1 Terra

A fast GPT-6.1 model for visual reasoning and clear writing, with reasoning optional.

Chat model / $1.00 / $5.00 per 1M tokens

Link: https://flymy.ai/mcp/models/gpt-6-1-terra/

### Claude Fable 5.2

Anthropic's top Claude, above Opus, for the hardest reasoning and long agent runs.

Chat model / $8.00 / $40.00 per 1M tokens

Link: https://flymy.ai/mcp/models/claude-fable-5-2/

### Claude Haiku 5.5

The lowest-priced current Claude, for quick, high-volume work with a 1M-token window.

Chat model / $0.10 / $0.50 per 1M tokens

Link: https://flymy.ai/mcp/models/claude-haiku-5-5/

### Claude Opus 5.5

The current Claude Opus for complex code, agents and analysis, with reasoning up to max.

Chat model / $4.00 / $20.00 per 1M tokens

Link: https://flymy.ai/mcp/models/claude-opus-5-5/

## Go to the source

[GPT-6 Astra in the playground →](https://app.flymy.ai/models/flymyai/gpt-6-astra), [GPT-6 Astra guide in the docs →](https://docs.flymy.ai/guides/use-llms), [Model endpoints in the docs →](https://docs.flymy.ai/api/models-endpoints), [Every model on FlyMy.AI →](https://flymy.ai/mcp/models/), [Every MCP in the catalog →](https://flymy.ai/mcp/#catalog), [Usage pricing →](https://flymy.ai/pricing/)

From the FlyMy.AI model catalog of 2026-11-12: inputs from the model's live schema, prices from FlyMy.AI billing. Requests are examples to paste, not recorded runs.

---

For agents: the FlyMyAI operating guide (sign up, connect, run models, tools and agents) is https://flymy.ai/skill.md, and https://flymy.ai/llms.txt lists the other pages and the documentation.