GPT-6 Astra at a glance.
From OpenAI's own pages, read Oct 20, 2026, so company-reported. A token is a word or part of a word. Prices can change; check the maker's page before you build on them.
- Made by
- OpenAIBased in US
- Released
- Sep 3, 2026OpenAI Developer Community announcement 'Introducing GPT-6-Astra'
- What it is for
- “Our most capable model for the most demanding work.”OpenAI API docs: Models, Oct 20, 2026 · in OpenAI's words
- Reads at once
- 1M tokensIts context window: how much text it can take in one go
- Takes in
- text, image
- Download
- No, online only
$10per million tokens in$50per million tokens out
Cached input $1.00, cache writes $12.50. Prompts over 272K input tokens are billed at 2x the input and cache rates and 1.5x the output rate for the whole request. Long-context column on pricing page: $20 in / $2.00 cached / $75 out.
OpenAI API docs: Pricing, Oct 20, 2026 · company-reported
Where it ranks.
Its position on each of the 21 tests the models page uses, by testers other than the maker. Epoch AI's and Vectara's scores are shown under their open licenses; for LMArena, Scale and Vals we give the position and link to their own leaderboard. Each list is a snapshot with its date.
| Test | Rank | Score |
|---|---|---|
| Epoch Capabilities IndexEpoch AI, Oct 20, 2026 | #2 | 166.4range 163.35 to 171.23 |
| Vals IndexVals AI, Oct 19, 2026 | #5 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena WebDevLMArena, Oct 19, 2026 | #2 | On LMArena |
| SWE-Bench ProScale AI, Sep 22, 2026 | #5 | On Scale AI |
| Vibe Code BenchVals AI, Oct 18, 2026 | #7 | On Vals AI |
| LMArena coding chatsLMArena, Oct 15, 2026 | #9 | On LMArena |
| Test | Rank | Score |
|---|---|---|
| LMArena textLMArena, Oct 15, 2026 | Not in the top 20 | |
| LMArena creative writingLMArena, Oct 15, 2026 | Not in the top 20 | |
| MultiChallengeScale AI, Feb 3, 2026 | Not in the top 15 |
| Test | Rank | Score |
|---|---|---|
| LMArena Agent ArenaLMArena, Oct 19, 2026 | #2 | On LMArena |
| Remote Labor IndexScale AI | #2 | On Scale AI |
| Terminal-Bench 4.0Vals AI, Oct 19, 2026 | #3 | On Vals AI |
| CUA-bench (games)Vals AI, Oct 13, 2026 | #1 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena mathLMArena, Oct 15, 2026 | Not in the top 20 | |
| Humanity's Last ExamScale AI | #1 | On Scale AI |
| ProofBenchVals AI, Oct 12, 2026 | #6 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena visionLMArena, Oct 19, 2026 | Not in the top 20 | |
| LMArena documentsLMArena, Sep 13, 2026 | #16 | On LMArena |
| Test | Rank | Score |
|---|---|---|
| GPQA DiamondVals AI, Sep 1, 2026 | Not in the top 20 | |
| MMMU ProVals AI, Sep 1, 2026 | Not in the top 20 |
| Test | Rank | Score |
|---|---|---|
| Vectara hallucination testVectara, Oct 16, 2026 | #45 | 8.7%made up facts in summaries; lower is better |
“Not in the top” means it isn't among the models in our copy of that list, which runs to the position shown; it may not have been tested. Vectara's test ranks by how rarely a model adds facts, so lower is better. Positions can be shared when scores tie. Epoch's range is its margin of uncertainty. Epoch AI and Vectara data: CC BY 4.0 and Apache-2.0.
What ChatGPT costs.
OpenAI's chat app, priced by the month in US dollars on its own pages. Which plans include GPT-6 Astra is on OpenAI's pages.
Every chat app's plans| Plan | A month |
|---|---|
| Free | Free |
| Go | $8 |
| Plus | $20 |
| Pro 100 | $100 |
| Pro 200 | $200 |
| Pro 500 | $500 |
| Business | Not shown |
OpenAI: ChatGPT pricing page, Oct 20, 2026 · company-reported
Our note: Max output 128,000 tokens; knowledge cutoff April 30, 2026 (model page). openai.com launch page: 'GPT‑6 Astra is rolling out today to a limited set of organizations.' Release date taken from OpenAI's developer-forum announcement post; the openai.com page shows no exact date.