GPT-6 Astra on Hermoso: OpenAI’s most capable, for long-horizon work with a 1M context

OpenAImaker

Premiumnamed explicitly, never the ambient default

Copy + scriptshooks, captions, briefs, storyboards

GPT-6 Astra is one of 22 text models Hermoso can write ad copy, hooks and scripts with. Name it, or leave the model out and the router picks a sound default. The same catalog is available from the app, the MCP server and the CLI, on one account and one credit balance; the exact price of every render is shown in the app before it runs.

What people make with it

The linked formats are creative recipes Hermoso plans and renders for your brand.

About OpenAI

OpenAI makes the GPT Image line, the strongest models at rendering legible text inside an image, and the GPT text models.

Specs

Best for	OpenAI’s most capable, for long-horizon work with a 1M context
Tier	Premium (named explicitly; never the ambient default)
Model id	`gpt-6-astra`

GPT-6 Astra compared with other text models

Model	Maker	Tier	Best for
GPT-6 Astra	OpenAI	Premium	OpenAI’s most capable, for long-horizon work with a 1M context
GPT-5.6 Sol	OpenAI	Standard	Complex professional work
GPT-5.6 Terra	OpenAI	Standard	Balances intelligence and cost
GPT-5.6 Luna	OpenAI	Standard	Cost-sensitive workloads
Claude Sonnet 4.6	Anthropic	Standard	Previous generation
Claude Sonnet 5.5	Anthropic	Standard	Responsive everyday work
Claude Opus 5.5	Anthropic	Premium	Complex, analytical work

See all 22 text models side by side.

Just ask for it

In Claude, ChatGPT, Cursor or any assistant connected to Hermoso, name the model in plain English. Or pick it from the model menu in the app.

Write five TikTok hooks for our olive oil with GPT-6 Astra.

Use GPT-6 Astra to script a 15 second testimonial, then render it.

Have GPT-6 Astra rewrite this caption for LinkedIn, Instagram and X.

Getting the best out of GPT-6 Astra

Give the platform, the length and the count: five nine-word TikTok hooks.
Paste the product page or a real review. Specifics beat adjectives.
Ask for variants on one angle at a time (price, speed, proof) so each can be tested cleanly.
List the words you never want to see. A blocklist is respected.

Write ad copy with GPT-6 Astra. Start free, and every feature is on every plan.

Start free → See pricing

Frequently asked questions

What is GPT-6 Astra used for in Hermoso?

OpenAI’s most capable, for long-horizon work with a 1M context. It writes hooks, captions, scripts and briefs, and can drive the agent loop that plans a whole ad.