GPT-6 ASTRA API
Build with gpt-6-astra.
The official model ID and Responses API path are here. Account eligibility still applies.
This is the launch-day developer answer: where access stands, what to copy, what the model supports, what it costs, and which integration decisions still belong to your application.
RELEASED · ACCESS EXPANDING
Use GPT-6 Astra through the route that fits.
Astra is available through multiple documented routes. ChatGPT, Work, Codex, API, Copilot, Foundry, and third-party catalog access each have their own plan, account, client, or provider rules.
A route listing is not a promise that your account, plan, workspace, or region is eligible.
Official OpenAI routes lead. GitHub and Microsoft routes are labeled separately.
HowToUseAstra does not sell access to Astra. Route listings are editorial and do not promise eligibility, identical product terms, or provider endorsement.
OFFICIAL STATUS · September 20, 2026
The GPT-6 Astra API route is documented.
OpenAI documents the route and model ID. If your account is eligible, start with gpt-6-astra
in a Responses API request and keep the key on your server.
Access boundary: a documented model is not proof that this site, your account, or every region has access. Confirm eligibility in OpenAI’s dashboard and treat the official model page as the current source of truth.
DEVELOPER CHECKLIST
The fields you need before writing integration code.
These facts are sourced from current OpenAI documentation. The application-specific choices remain yours to test and govern.
API access
Confirmed Documented route · account eligibility applies
The API route is documented, with access controlled by Trusted Access and eligible-account rollout.
Open model availabilityExact model ID
Confirmed gpt-6-astra
Use the machine-readable identifier in the model field. Keep it separate from the public name GPT-6 Astra.
Open the official quickstartRecommended API
Confirmed Responses API
OpenAI recommends Responses for new projects; tool calling with Astra requires Responses API.
Read the Responses guideEndpoint
Confirmed https://api.openai.com/v1/responses
Use the official OpenAI API host and keep authentication server-side. Do not expose API keys in browser code.
Check request examplesPricing
Confirmed $10/M input · $1/M cached · $12.50/M cache write · $50/M output
See the dedicated calculator for cached tokens, cache writes, Batch/Flex, Fast mode, and large-context rules.
Read pricing detailsContext and output
Confirmed 1.05M context · 128K max output
Model-level API limits; the working limit can still depend on endpoint, account, region, and plan.
Verify current limitsWHEN ANOTHER MODEL FITS BETTER
Choose by the job, not by the release headline.
Astra is the primary route. Use another model only when its workflow, access, or economics are a better fit.
GPT-5.6 Sol
The most direct stepping stone if your target is OpenAI’s tooling, model naming, and developer workflow.
- Why it fits
- OpenAI’s current model guidance identifies GPT-5.6 Sol as the full-capability GPT-5.6 route.
- Honest limit
- It is GPT-5.6 Sol, not GPT-6 Astra. Similar lineage does not establish Astra-level capability, access, or pricing.
Claude Fable 5.1
A strong candidate when the job is difficult coding, research, knowledge work, or a long-running agent task.
- Why it fits
- Anthropic describes Fable 5.1 as its most capable model for ambitious coding projects and knowledge work.
- Honest limit
- It is Anthropic’s model, not GPT-6 Astra. Safeguards, plan limits, retention, and actual task performance still need to be checked for your use case.
Fusion
A different answer to uncertainty: ask several models to analyze in parallel, then synthesize instead of relying on one model.
- Why it fits
- OpenRouter describes Fusion as a server-side tool for multi-model deliberation.
- Honest limit
- Fusion is an OpenRouter tool, not itself a frontier model and not GPT-6 Astra. Availability, model mix, data terms, and cost are separate.
These are editorial alternatives, not Astra and not paid placements. Their product terms and capabilities remain separate.
PRODUCT SOURCES
Product claims stay beside the action so the comparison remains inspectable.
PROVIDER ACCESS MAP
Access routes, separated by evidence.
OpenAI remains the canonical model route. GitHub Copilot and Microsoft Foundry have current provider evidence; other catalogs below are monitoring lanes only.
| Provider | Access evidence | API / model field | Price signal | Best fit | Next step |
|---|---|---|---|---|---|
| OpenAI API first-party | Confirmed Confirmed in current first-party docs The model and API route are documented. Access remains account-specific through Trusted Access and eligible accounts. | gpt-6-astra Responses API · api.openai.com | $10 input · $1 cached · $12.50 cache writes · $50 output / 1M | The canonical model ID, first-party tools, and the cleanest migration path. | Check OpenAI access |
| OpenAI ChatGPT first-party | Confirmed Confirmed in current first-party docs OpenAI’s current Help Center names GPT-6 Pro, powered by Astra, for Pro $100, Pro $200, Business, and Enterprise; availability varies by product, plan, workspace, and rollout. | GPT-6 Pro / Astra ChatGPT model picker | Included within the applicable ChatGPT plan allowance; plan terms vary. | Interactive work without managing an API key. | Check ChatGPT access |
| OpenAI Work / Codex first-party | Confirmed Confirmed in current first-party docs OpenAI says Astra is rolling out in Work and Codex with plan and product-specific allowances; Codex clients must meet the current version requirements. | GPT-6 Pro / Astra ChatGPT Work · Codex desktop / CLI | Uses the applicable ChatGPT plan allowance; extra credits do not provide early access. | Long multi-step work and coding workflows in OpenAI’s products. | Check Work and Codex |
| GitHub Copilot first-party | Confirmed Confirmed in current first-party docs GitHub’s supported-model catalog lists GPT-6 Astra as GA; Copilot plan, client, and minimum-version requirements apply. | GPT-6 Astra Copilot model picker | Uses the applicable Copilot plan and premium-request terms. | Astra-assisted coding inside a supported GitHub Copilot client. | Check Copilot support |
| Microsoft Foundry cloud | Confirmed Confirmed in current first-party docs Microsoft’s current article says GPT-6 Astra is generally available in Microsoft Foundry; deployment, data zone, and account requirements still apply. | Provider display name Foundry Models · Foundry Agent Service | $10/$1/$12.50/$50 global short context; regional and long-context rates differ. | Enterprise identity, governance, data-zone choices, and Foundry-native workflows. | Read the Foundry route |
MONITORING LANES
OpenAI-compatible is not the same as Astra-supported.
These catalogs are useful places to recheck during the rollout, but the current review did not verify an exact GPT-6 Astra listing. Do not enter a key, pay a bill, or promise a customer access based on a generic compatibility claim.
Amazon Bedrock
UnknownNo exact GPT-6 Astra match was verified in the public model catalog checked on September 5, 2026.
Recheck AWS catalogOpenRouter
UnknownNo exact GPT-6 Astra listing was verified in the public model catalog checked on September 5, 2026.
Recheck model catalogTogether AI
UnknownNo exact GPT-6 Astra listing was verified in the public model library checked on September 5, 2026.
Recheck model libraryFireworks AI
UnknownNo exact GPT-6 Astra listing was verified in the public model library checked on September 5, 2026.
Recheck model libraryGroq
UnknownNo exact GPT-6 Astra match was verified in the public supported-model list checked on September 5, 2026.
Recheck supported modelsBaseten
UnknownNo exact GPT-6 Astra listing was verified on the public Model APIs page checked on September 5, 2026.
Recheck Model APIsHugging Face
UnknownNo exact GPT-6 Astra listing was verified in the public provider documentation checked on September 5, 2026.
Recheck provider docsRelationship disclosure: current provider and monitoring links are editorial and untagged. No paid placement or commercial ranking is implied.
MINIMAL REQUEST
Copy the smallest useful starter.
The official quickstart uses the OpenAI SDK and Responses API. Start small, then add tools, files, and structured output one capability at a time.
import OpenAI from "openai";
const client = new OpenAI();
const response = await client.responses.create({
model: "gpt-6-astra",
input: "Summarize this task and list the next safe step.",
});
console.log(response.output_text);
Install the official openai package, set OPENAI_API_KEY in the server
environment, and verify account access before running a production task.
CAPABILITY MAP
What the current docs expose.
Capabilities are documented interfaces. They are not reliability guarantees for your workflow.
Computer use
Listed in OpenAI’s current GPT-6 Astra model guidance; test the task, permissions, and failure recovery in your own bounded environment.
Browsing and web search
Listed in OpenAI’s current GPT-6 Astra model guidance; test the task, permissions, and failure recovery in your own bounded environment.
Software engineering
Listed in OpenAI’s current GPT-6 Astra model guidance; test the task, permissions, and failure recovery in your own bounded environment.
Science
Listed in OpenAI’s current GPT-6 Astra model guidance; test the task, permissions, and failure recovery in your own bounded environment.
BEFORE PRODUCTION
The integration boundary is part of the product.
Astra can do more than a one-shot text completion. That makes permissions, logging, approvals, and recovery part of a responsible API rollout.
- Keep secrets server-side.Never put an OpenAI API key in browser JavaScript, a public repository, or a client-visible prompt.
- Start with Standard.Pin a reasoning effort, output cap, timeout, retry policy, and tool allowlist before optimizing for throughput.
- Verify outputs.Use tests, citations, schemas, human review, or a second system before accepting high-impact work.
- Record economics.Capture input/output usage, cache behavior, processing mode, latency, retries, and accepted-result cost.
API FAQ
The launch questions developers are asking.
Checked against OpenAI’s current model and quickstart documentation.
Can I call GPT-6 Astra through the OpenAI API?
OpenAI documents GPT-6 Astra API access and the gpt-6-astra model ID. Trusted Access and eligible-account rollout rules still apply, so check your account and the live model page before assuming access.
What is the GPT-6 Astra API model ID?
The official model identifier is gpt-6-astra. The public product name is GPT-6 Astra.
Which API should I use for Astra tools?
Use the Responses API for new work. OpenAI’s model guide says GPT-6 Astra supports the Responses API, and tool calling requires Responses rather than Chat Completions.
Can I run the example in a browser?
Keep the OpenAI SDK and API key on a server-side boundary. Browser code can call your own backend, but should not ship a reusable API key to visitors.
Does the API support audio or video?
The current model page lists text and image input with text output; audio and video are not supported for GPT-6 Astra on that page.
SOURCE LEDGER
Use the canonical docs.
The model page supplies the identifier, rollout, pricing, limits, modalities, and tools. The model guide and quickstart supply the Responses API shape and official SDK examples.
OWNED OFFER · DEVELOPER
Astra Production Starter Kit — planned $49
A proposed one-time kit with a server-side Responses API starter, retry and failure handling, cost guardrails, an evaluation checklist, and deployment notes. No charge today: joining records interest in the planned $49 launch price; it does not create an order or promise a ship date.