GPT-6 Astra
OpenAI's flagship model, reached through NeverNo without your name, account or IP address, for the hardest reasoning, code and image-reading work.
Updated November 8, 2026
Readable on your devices only.
Your conversation is readable on your device, and on your other devices if you sync them. Nowhere else.
Unreadable to us.
Your message passes through without being written down; your chats are only ever stored encrypted.
The model doesn’t know you.
It gets the question, never your email, your account or your IP address.
Nothing is left along the way.
The reply comes back and is stored here, encrypted; even when you sync, your key never reaches us in the clear.
At a glance
| Maker | OpenAI |
|---|---|
| Context | 200,000 tokens |
| Longest reply | 16,384 tokens |
| Strengths in the app | Hard questions, Reasoning, Code, Reads images |
| Reasoning | Always on |
| Who can use it | Paid plans |
| How it’s paid | Credits, from the first use |
| Privacy | Anonymized: NeverNo sends the request to its maker without your name, account or IP address. The maker still reads the text, applies its own rules and may keep it for a while under its own policy.Some requests its maker doesn’t allow are answered by one of NeverNo’s private models instead, and the app tells you so. |
Price
What the app charges, read from the same table the servers bill with. 1 credit = $0.01.
| Typical message (2,000 tokens read, 600 written) | 14.51 credits ($0.15) |
|---|---|
| Million tokens read | 3,296.88 credits ($32.97) |
| Million tokens written | 13,187.5 credits ($131.88) |
Measured
Our own measurements and one third-party score, each with its conditions and date. Figures are not rounded.
| Median time to the first word | 1.74 sOur client, 12 everyday requests run 3 times each, November 9, 2026 |
|---|---|
| arena.ai Text Arena, overall score | 1,476Third-party leaderboard, page dated October 27, 2026 |
What it is
GPT-6 Astra is the model OpenAI describes as its most capable for the most demanding work. In NeverNo it sits at the top of the OpenAI family, above GPT-6.1 Sol and GPT-6.1 Terra, and it is the only one of the three tagged for code as well as reasoning and vision. It reads a context of 200k tokens and can write up to 16,384 tokens in a single reply: enough for a whole module, a long report or a detailed plan in one go.
Astra is anonymized, not private. NeverNo forwards your request to OpenAI without your name, your account or your IP address, and your conversation history stays encrypted in your browser instead of on our servers. OpenAI still reads the text it receives, applies its own usage rules and may refuse a request or keep it for a while under its own policy. Some requests OpenAI does not allow are answered by one of NeverNo's private models instead, and the app tells you so.
Reasoning cannot be switched off on Astra: it always thinks before it answers. The picker offers two settings, Adaptive and High. Adaptive lets the model spend what it judges necessary; High asks it to dig further, which takes longer and produces more reasoning. Astra is paid in credits on paid plans, and the app shows what an exchange costs before you send it.
On the arena.ai Text Arena, Astra had an overall score of 1476 on the page dated October 27, 2026, close to GPT-6.1 Sol's 1481. That ranking rewards general conversation; Astra earns its place on long, multi-step work where code and careful reasoning matter more than chat style. Think of it as the senior engineer you call in once cheaper models have stalled, rather than a companion for casual small talk.
Strengths
Built for depth: OpenAI's most capable model by its own description, with reasoning always on, which suits problems that need many careful steps.
Code and reasoning in one model: it is the only OpenAI model in NeverNo's catalog tagged for code, handy for refactors, debugging sessions and architecture reviews.
Room to work: 200k tokens of context to hold a large extract of a codebase or a long document, and up to 16,384 tokens per reply.
Reads images: screenshots, diagrams, scanned pages and charts can travel with the question.
Anonymized access: no name, account detail or IP address goes to OpenAI with the request.
Limits
It uses more credits per exchange than GPT-6.1 Sol or GPT-6.1 Terra; for everyday questions the lighter models are usually the better buy.
Reasoning is always on, so even a short question waits while the model thinks. When speed matters more than depth, GPT-6.1 Terra lets you turn reasoning off.
OpenAI moderates what it receives: Astra can refuse, and its maker's policy decides how long a request is kept.
Not part of the Free plan: it needs a paid plan and credits.
When to choose it
A stubborn bug spread over several files
Paste the relevant files, the stack trace and what you already tried. Astra keeps the whole picture in its 200k-token context and returns a fix along with the reasoning behind it, not just a patch.
Technical and strategic plans
Migration plans, system designs, research outlines with many steps: long replies let Astra write the full plan, risks and fallbacks included, without stopping halfway.
Dense documents with figures
Send a contract, a scientific paper or a dashboard screenshot and ask for the clauses that matter, the numbers that do not add up, or a structured summary you can reuse. It can also compare two drafts of a clause, flag ambiguous wording, or turn a blurry spreadsheet capture into tidy bullet points.
Prompt tips
State the goal, the constraints and what a finished answer looks like (a diff, a table, a numbered plan). Astra reasons well, but it reasons toward what you ask for.
Keep High for problems that truly need it. Adaptive is usually enough and answers sooner; switch to High when a reply came close but skipped a step.
For code, give versions, the exact error output and the files involved rather than a description of them. The more raw material it sees, the less it has to guess. If an answer feels generic, push back with a counter-example or an edge case and ask it to revisit its argument from scratch.
Frequently asked questions
Is GPT-6 Astra free on NeverNo?
No. It is a premium model paid in credits, available on paid plans. The Free plan includes other models, such as DeepSeek V4 Flash and GLM 5.3 Flash.
Is GPT-6 Astra private on NeverNo?
It is anonymized: OpenAI receives the request without your name, account or IP address, and your history stays encrypted in your browser. OpenAI still reads the text and applies its own rules. For a model that NeverNo runs itself, pick one of the private models.
What is GPT-6 Astra's context window?
200k tokens in NeverNo, with replies of up to 16,384 tokens.
GPT-6 Astra or GPT-6.1 Sol: which one should I pick?
Sol scored slightly higher on the arena.ai Text Arena (1481 versus 1476, page dated October 27, 2026) and costs fewer credits per exchange, so it is the sensible default for most conversations. Astra is the one for code and for the longest, hardest reasoning tasks.
Can I turn off reasoning on GPT-6 Astra?
No, its reasoning stays on; you choose between Adaptive and High. For quick answers without reasoning, GPT-6.1 Terra or Claude Haiku 5.5 are better choices.