Row by row
| GPT-5 | Astra | |
|---|---|---|
| Availability | Public — ChatGPT and API | Internal only |
| Built for | Broad everyday work, fast answers | Long-horizon, multi-agent problem-solving (reported) |
| Evidence base | A year of public use and benchmarks | One research release: ten solved open problems |
| Pricing | Published per-token and subscription tiers | Not announced |
| Access | Sign up today | No API, waitlist, or date |
| Regulatory status | Deployed | Expected to face a ~30-day federal review (reported) |
What GPT-5 is
OpenAI’s current general-purpose flagship, available in ChatGPT and through the API in several sizes. It answers in seconds to minutes, handles text and images, reasons step by step when asked, and covers the broad middle of what people use AI for: writing, code, analysis, and conversation.
What Astra is
An internal model family that OpenAI credits with ten new results on open mathematical problems, each formalized in Lean 4. Reporting describes its design goal as multiple agents coordinating on a single problem for hours or days — a different shape of work from the question-answer rhythm of today’s chatbots. No public form of it exists.
Why no benchmark settles this
A fair comparison needs both models on the same tests under known constraints. Astra has no public access, no published context length, no inference cost, and no commitment that the internal research system is what would ship. Solved open problems prove something real — and prove nothing about email, code review, or any task you would actually hand it tomorrow.
If you use GPT-5 today
The likeliest path, based on OpenAI’s history: Astra’s capabilities arrive first in paid tiers or limited programs, priced above the current flagship, with GPT-5 continuing to improve alongside. The everyone-on-day-one launch GPT-5 got is a poor template for a model expected to clear federal review first. Until then, the strongest available options are on the alternatives page.
Questions people ask
Is Astra better than GPT-5?
Unproven. Astra’s published record is ten solved open problems in mathematics — remarkable and narrow. Nothing public shows how it compares on writing, coding, or general work, and no one outside OpenAI can test it.
Will GPT-5 become obsolete when Astra ships?
Reporting frames Astra as a long-horizon specialist rather than a general replacement, and OpenAI has historically run specialist and generalist lines side by side. But its final positioning is not announced.
Will Astra cost more than GPT-5?
Pricing is not announced. The only public cost signal is that the ten math results reportedly consumed about $2,000 of compute at API rates, which describes research usage, not a price.
Can I benchmark Astra against GPT-5 myself?
No. Benchmarking requires public access, and Astra has none. Any head-to-head numbers circulating online are guesses.
Related: Is Astra GPT-6? · Astra vs. Gemini · the release-date record