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GPT 6 Astra API — OpenAI Multimodal Reasoning LLM

The GPT 6 Astra API gives you programmatic access to OpenAI's GPT 6 Astra model for multimodal reasoning over text and images, with an adjustable reasoning-effort dial and an optional web-search tool, through one Muapi API key, at OpenAI's own published rate of $10.00 per million input tokens and $50.00 per million output tokens.

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Watch: GPT 6 Astra Reaction + Real-World Use-Cases

🧠 Reasoning

Multimodal chat completion with adjustable reasoning effort and an optional web-search tool3 models

Text GenerationNew

🧠 Reasoning

GPT 6 Astra

Submit a prompt (with an optional reference image and system prompt) and get back a request ID, then poll the shared result endpoint for the completed response.

Text + Image in

$10.00/M in · $50.00/M out

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Text GenerationNew

🧠 Reasoning

GPT 6.1 Sol

Near-Astra agentic coding, computer use, and professional work at one-fifth of Astra's price, with reasoning effort, image input, and web search. Submit a prompt and poll the shared result endpoint.

Text + Image in

$2.00/M in · $10.00/M out

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Text GenerationNew

🧠 Reasoning

GPT 6 Sol

Use GPT 6 Sol for advanced coding, focused reasoning, and agent workflows. Submit a prompt and optional system prompt, then poll the shared result endpoint.

Text in

$2.00/M in · $10.00/M out

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efficient

1 models

Text GenerationNew

efficient

GPT 6 Luna

Use GPT 6 Luna for fast, high-volume text generation and focused reasoning. Submit a prompt and optional system prompt, then poll the shared result endpoint.

Text inFast

$0.10/M in · $0.50/M out

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What is the GPT 6 Astra API?

The GPT 6 Astra API gives applications programmatic access to OpenAI's GPT 6 Astra model. Submit a prompt — optionally alongside a reference image and a system prompt to steer tone and behavior — and get back a text response. Turn on web_search_switch when the answer needs current information the model wasn't trained on, and dial reasoning_effort from low to xhigh to trade latency for deeper multi-step reasoning on hard problems.

Muapi exposes GPT 6 Astra through an asynchronous REST endpoint. Submit a request with one Muapi API key, receive a request ID, poll the shared result endpoint, and retrieve the completed text response. Compare it against every other text model in the playground.

Key Capabilities

Multimodal Input

Pass an optional image_url alongside your prompt so GPT 6 Astra can reason about what's in the picture, not just the text.

Adjustable Reasoning Effort

Choose low, medium, high, or xhigh to trade response latency for deeper step-by-step reasoning on harder problems.

Optional Web Search

Set web_search_switch to true to let the model pull in current information instead of relying only on its training data.

System Prompt Control

Set a system_prompt to steer tone, persona, or output format across a request.

Asynchronous REST API

Submit a request, poll the shared result endpoint, and retrieve the completed text response.

Transparent Per-Token Pricing

Billed at $10.00 per million input tokens and $50.00 per million output tokens, OpenAI's own published rate, with a $0.0008 minimum per call.

GPT 6 Astra API Endpoint Comparison

Endpoint	Input	Output	Price	Best For
gpt-6-astra	Prompt + optional image_url, system_prompt	Complete text response (poll for result)	$10.00/M in · $50.00/M out	Batch jobs, backend pipelines, one-shot completions
gpt-6-1-sol	Prompt + optional image_url, system_prompt	Complete text response (poll for result)	$2.00/M in · $10.00/M out	Agentic coding and computer use at one-fifth of Astra's price

Minimum $0.0008 per call. Turning on web_search_switch or a higher reasoning_effort increases output tokens and therefore cost.

How to Call the GPT 6 Astra API

Submit a JSON request with your Muapi API key, save the request ID, and poll the shared result endpoint for the completed response.

1. Submit a prompt

curl -X POST https://api.muapi.ai/api/v1/gpt-6-astra \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"Summarize the tradeoffs between batch and interactive AI APIs","system_prompt":"You are a precise technical writer.","web_search_switch":false,"reasoning_effort":"medium"}'

# Response: {"request_id":"REQUEST_ID"}

Call gpt-6-astra with a prompt, and optionally a system_prompt, image_url, web_search_switch, and reasoning_effort.

2. Poll the result

curl https://api.muapi.ai/api/v1/predictions/REQUEST_ID/result \
  -H "x-api-key: YOUR_API_KEY"

# Poll until status is completed, then read the generated text from outputs.

Poll until the task is completed, then read the generated text from outputs.

3. Or call GPT 6.1 Sol

curl -X POST https://api.muapi.ai/api/v1/gpt-6-1-sol \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"Trace why this test is flaky and propose a fix.","reasoning_effort":"high"}'

# Response: {"request_id":"REQUEST_ID"}

Same request shape on the cheaper GPT 6.1 Sol tier, with reasoning_effort and optional web search. Poll the same result endpoint.

Frequently Asked Questions

What is GPT 6.1 Sol and how does it compare to Astra?

GPT 6.1 Sol sits between GPT 6 Astra and GPT 6 Luna: near-Astra performance in agentic coding, computer use, and professional work at $2.00/M input and $10.00/M output tokens — one-fifth of Astra's price. Call it at gpt-6-1-sol.

What is GPT 6 Astra?

GPT 6 Astra is OpenAI's multimodal reasoning LLM. Muapi exposes it as a standard REST API, so any application can call it with an API key instead of an OpenAI account.

Can GPT 6 Astra understand images?

Yes. Pass an image_url alongside your prompt and the model will reason about both the text and the image together.

What does reasoning_effort control?

It's an enum — low, medium, high, or xhigh — that trades response latency for deeper multi-step reasoning. The default is low; raise it for harder problems that need more careful reasoning.

What does web_search_switch do?

When set to true, the model can pull in current information from the web instead of answering only from its training data. It's false by default.

How much does the GPT 6 Astra API cost?

$10.00 per million input tokens and $50.00 per million output tokens, with a $0.0008 minimum per call — the same rate OpenAI publishes directly, not a marked-up resale price.

Do I need an OpenAI account to use this API?

No. Muapi exposes GPT 6 Astra as a standard asynchronous REST API. Create a Muapi API key, submit JSON, and poll the returned request ID for the completed response.

Compare AI Image APIs →GPT 6 Astra can reason about images you pass it; pair it with an image-generation model from the catalog.Explore the GPT Image 2 API →Generate or edit the images you then hand to GPT 6 Astra for multimodal reasoning.Browse every model on Muapi →Compare GPT 6 Astra against every other text and image model in the Muapi catalog side by side.

Ready to build with GPT 6 Astra?

Create one Muapi API key and connect multimodal reasoning to your product through an asynchronous REST call.

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