Model · GPT
GPT-6 Astra: price, limits and messages on every plan
OpenAI's GPT-6 Astra in llmwise: how many GPT-6 Astra messages each plan gives, what counts against them, what GPT-6 Astra reads, where your messages go, and what it costs at OpenAI's API prices.
Prices and limits checked against OpenRouter's GPT-6 Astra page. Updated .
Short answer
GPT-6 Astra isn't in llmwise's free trial; it needs Pro or a higher plan. A paid plan gives up to 31 GPT-6 Astra messages a month on Pro ($20), 100 on Max ($50), 225 on Ultra ($100) and 500 on Studio ($200). It isn't on Plus. Each GPT-6 Astra message's price is shown before you send it.
In the news: OpenAI DevDay 2026: GPT-6.1 Sol and what else OpenAI announced (); ChatGPT Pro $200's sign-up pause is over: Pro 200 reopened, and Pro 500 is new ().
GPT-6 Astra on every plan
What GPT-6 Astra costs in llmwise is a count, not a token bill: up to 31 a month on Pro, and it isn't in the free trial.
| Plan | Price | GPT-6 Astra messages | Each, if all go to GPT-6 Astra |
|---|---|---|---|
| Free | $0 | Not in the trial | — |
| Plus | $10 a month | Not on Plus | — |
| Pro | $20 a month | Up to 31 a month | $0.65 |
| Max | $50 a month | Up to 100 a month | $0.50 |
| Ultra | $100 a month | Up to 225 a month | $0.44 |
| Studio | $200 a month | Up to 500 a month | $0.40 |
Prices don't include tax, which is added where it applies and shown before you pay. A paid plan's month is one allowance every model shares, so each GPT-6 Astra count is the most you get if all of it goes to GPT-6 Astra, and "each" is the plan's price divided by that count. How pricing works.
Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Plus $3.75, Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.
GPT-6 Astra usage limits, explained
Every limit on GPT-6 Astra in llmwise is published. Here's each one, in GPT-6 Astra messages.
GPT-6 Astra draws on the monthly allowance every model shares: 31 GPT-6 Astra messages on Pro if nothing else uses it. Each message on a smaller model leaves fewer GPT-6 Astra messages, each GPT-6 Astra message leaves fewer for them, and unused GPT-6 Astra messages don't carry over when the billing period renews. It isn't on Plus.
Long GPT-6 Astra chats count more, because each GPT-6 Astra reply resends the whole conversation. Past 64k tokens a GPT-6 Astra reply counts as 2 messages, so Pro's 31 GPT-6 Astra messages become up to 15 such replies; past 128k it counts as 4 (up to 7 GPT-6 Astra replies); past 200k the GPT-6 Astra chat is full.
GPT-6 Astra's native context window is 1.05M tokens; llmwise stops a GPT-6 Astra chat at 200k tokens, so a GPT-6 Astra chat uses at most 200k of its 1.05M tokens.
A GPT-6 Astra reply can run to 8,000 tokens on Plus and Pro and 16,000 on Max, Ultra, and Studio, at the same GPT-6 Astra price however long it runs.
On a paid plan each web search or link read in a GPT-6 Astra reply counts as 1 more GPT-6 Astra message.
A $10 top-up adds up to 25 more GPT-6 Astra messages on Pro and higher plans, valid 12 months, spent once the plan's own GPT-6 Astra count is gone.
GPT-6 Astra replies share every plan's soft cap of 100 replies an hour with the other models.
What GPT-6 Astra reads and does
| Made by | OpenAI |
|---|---|
| Model at OpenRouter | openai/gpt-6-astra |
| Context window | 1.05M tokens |
| Longest chat in llmwise | 200k tokens |
| Images you attach | Reads them |
| PDFs you attach | Reads the whole file, charts and layout included |
| Tools (search, documents, code, apps) | Yes |
| Reasoning | On, at medium effort |
| API price, per million tokens | $10.00 in, $50.00 out |
| A typical message at API prices | $0.0750 |
| On Pro | Up to 31 a month |
Where your GPT-6 Astra messages go
A GPT-6 Astra message goes to OpenAI directly when llmwise can reach OpenAI, or through OpenRouter when it can't.
If OpenAI fails before a GPT-6 Astra reply starts (an overload, a server error, a dropped connection), llmwise resends the GPT-6 Astra request through OpenRouter, to endpoints that, according to OpenRouter, don't store prompts for their own use or train on them.
The Privacy Policy lists every company a GPT-6 Astra message can reach.
GPT-6 Astra's API price, and what a message costs
GPT-6 Astra's API price is $10.00 per million tokens in and $50.00 out: OpenAI's list price. At that price a typical GPT-6 Astra message (4,000 tokens in, 700 out) costs about $0.0750.
In llmwise a GPT-6 Astra message isn't billed by the token: it's one of up to 31 GPT-6 Astra messages a month on Pro, however long the GPT-6 Astra reply runs.
What GPT-6 Astra's replies cost in our test runs, job by job, and GPT-6 Astra beside the rest of its family: GPT-6 Astra pricing: API price, cost per message and plans.
When to use GPT-6 Astra, and when a cheaper model will do
llmwise's catalog describes GPT-6 Astra as “OpenAI's flagship model”. No benchmark scores here: ask GPT-6 Astra your own question, then switch the picker to another model in the same chat, which sees GPT-6 Astra's answer too.
When a question doesn't need GPT-6 Astra, these read the same attachments, whole PDFs included, and leave more of the month for GPT-6 Astra:
GPT-6.1 Sol (OpenAI): up to 125 a month on Pro, against GPT-6 Astra's 31.
GPT-6 Sol (OpenAI): up to 125 a month on Pro, against GPT-6 Astra's 31.
GPT-6 Luna (OpenAI): 60 a day on Pro, against GPT-6 Astra's 31.
Claude Opus 5.5 (Anthropic): up to 62 a month on Pro, against GPT-6 Astra's 31.
Same count as GPT-6 Astra on every plan: Claude Fable 5.1.
GPT-6 Astra in our test runs
GPT-6 Astra passed 48 of our 50 test prompts, sent through llmwise's own pipeline and checked the same way for every model.
- Coding5 of 5 passed
- Writing5 of 5 passed
- Math5 of 5 passed
- Summarization5 of 5 passed
- Data analysis5 of 5 passed
- Customer support3 of 5 passed
- Translation5 of 5 passed
- SQL5 of 5 passed
- RAG and answering from documents5 of 5 passed
- Agents and tool use5 of 5 passed
How GPT-6 Astra began its reply to our first writing prompt, “Write a LinkedIn post of 100 to 150 words announcing that our small bakery, Crumb & Co., opens a second shop in Leeds on 14 November. Mention the free coffee…”:
We’ve got some lovely news: Crumb & Co. is opening a second shop in Leeds on 14 November. As a small bakery, this is a big step for us. We’re grateful to everyone who has stopped by for a loaf, picked up a treat, or told a friend about us. Your support has helped make this possible. We’re looking forward to meeting our new neighbours and welcoming familiar faces through the door. To celebrate, we’ll be offering free coffee on opening day. Come and say hello, have a look around, and enjoy a cup on us. Thank you for being part of Crumb & Co. We can’t wait to welcome you to our second home.
Also about GPT-6 Astra: Does ChatGPT Plus include GPT-6 Astra?
Questions
Is GPT-6 Astra free in llmwise?
No. GPT-6 Astra isn't in llmwise's free trial, which is Claude Haiku 5.5 alone. Pro ($20 a month) gets up to 31 GPT-6 Astra messages a month.
What are GPT-6 Astra's usage limits in llmwise?
GPT-6 Astra has a published monthly count on each paid plan (up to 31 GPT-6 Astra messages a month on Pro), shared with the other models. A long GPT-6 Astra chat counts each reply as 2 GPT-6 Astra messages past 64k tokens and 4 past 128k.
What happens when my GPT-6 Astra messages run out?
Your GPT-6 Astra count resets when your billing period renews. Until then, the everyday models keep answering on their own daily count, and a $10 top-up adds up to 25 more GPT-6 Astra messages.
How much context does GPT-6 Astra have in llmwise?
1.05M tokens is GPT-6 Astra's native context window. A GPT-6 Astra chat in llmwise stops at 200k tokens, and past 64k each GPT-6 Astra reply counts as more than one message, so a new GPT-6 Astra chat for each new task goes further.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, GLM, and Mistral, in one chat.
See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.