High-volume, cost-sensitive work
Choose GPT-6 Astra
GPT-6 Astra costs 24% less on a typical mix of three input tokens for every output token ($20.00 against $26.25 per million tokens).
GPT-6 Astra vs o1: price, context and capabilities
Choose GPT-6 Astra for high-volume, cost-sensitive work, writing and code generation, reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
In short
- GPT-6 Astra is 24% cheaper than o1 at the headline price ($20.00 / 1M tokens vs $26.25 / 1M tokens).
- GPT-6 Astra reads more per request: 1.05M tokens against 200k.
- GPT-6 Astra is the newer model (Sep 3, 2026, against Dec 17, 2024).
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose GPT-6 Astra
GPT-6 Astra charges $50.00 per million output tokens, against $60.00 for o1. Output dominates the bill when answers are long.
Reused prompts and documents (RAG, agents)
Choose GPT-6 Astra
GPT-6 Astra charges $1.00 per million cached input tokens, against $7.50 for o1.
Very long inputs
Choose GPT-6 Astra
GPT-6 Astra reads up to 1.05M tokens per request, against 200k for o1.
Reasoning over long documents
Choose GPT-6 Astra
GPT-6 Astra scores 80.7% on Long-context reasoning (AA-LCR), against 65% for o1.
Latest release
Choose GPT-6 Astra
GPT-6 Astra is the newer release (Sep 3, 2026, against Dec 17, 2024 for o1).
Most recent knowledge
Choose GPT-6 Astra
GPT-6 Astra was trained on data up to April 2026, against October 2023 for o1.
Monthly cost at three volumes
| Volume | GPT-6 Astra | o1 | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $22.50 | $30.00 | GPT-6 Astra, $7.50 less |
| Production: 20M input, 5M output tokens | $450.00 | $600.00 | GPT-6 Astra, $150.00 less |
| Scale: 500M input, 100M output tokens | $10,000 | $13,500 | GPT-6 Astra, $3,500 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| GPT-6 Astra | o1 | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Category | Language models | Language models |
| Status | Generally available | Deprecated |
| Headline price | $20.00 / 1M tokens | $26.25 / 1M tokens |
| Input | $10.00 / 1M tokens | $15.00 / 1M tokens |
| Output | $50.00 / 1M tokens | $60.00 / 1M tokens |
| Cached input | $1.00 / 1M tokens | $7.50 / 1M tokens |
| Context window | 1.05M | 200k |
| Max output | 128k | 100k |
| Released | Sep 3, 2026 | Dec 17, 2024 |
| Knowledge cutoff | April 2026 | October 2023 |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API |
| API model id | gpt-6-astra | o1 |
Benchmarks side by side
Leader in bold.
| Benchmark | GPT-6 Astra | o1 |
|---|---|---|
| GPQA Diamond | 96.1% | 74.7% |
| Humanity's Last Exam | 54.7% | 7% |
| Long-context reasoning (AA-LCR) | 80.7% | 65% |
| Intelligence Index | 52.7 | No data |
| SciCode | 56.5% | No data |
| MMMU-Pro (visual reasoning) | 86.9% | No data |
| Terminal-Bench Hard | No data | 12.9% |
| IFBench (instruction following) | No data | 70.3% |
| τ²-Bench (agentic tool use) | No data | 62.6% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose GPT-6 Astra or o1?
Choose GPT-6 Astra for high-volume, cost-sensitive work, writing and code generation, reused prompts and documents (RAG, agents), very long inputs, reasoning over long documents, the latest release and the most recent knowledge; on the other points the two are level or the data is missing.
Which is cheaper, GPT-6 Astra or o1?
GPT-6 Astra is 24% cheaper than o1 at the headline price ($20.00 / 1M tokens vs $26.25 / 1M tokens).
Which has the larger context window, GPT-6 Astra or o1?
GPT-6 Astra reads more per request: 1.05M tokens against 200k.
What is the difference between GPT-6 Astra and o1?
GPT-6 Astra is made by OpenAI and o1 by OpenAI. GPT-6 Astra is 24% cheaper than o1 at the headline price ($20.00 / 1M tokens vs $26.25 / 1M tokens). GPT-6 Astra reads more per request: 1.05M tokens against 200k. GPT-6 Astra is the newer model (Sep 3, 2026, against Dec 17, 2024).
How much do GPT-6 Astra and o1 cost per month?
At 20 million input and 5 million output tokens a month, GPT-6 Astra costs $450.00 and o1 costs $600.00, at standard rates.
Which is newer, GPT-6 Astra or o1?
GPT-6 Astra was released on Sep 3, 2026 and o1 on Dec 17, 2024.