| Feature | o1 | GPT-5 (thinking) |
|---|---|---|
| AI Lab | OpenAI | OpenAI |
| Context Size | 128,000 tokens | 272,000 tokens |
| Max Output Size | 100,000 tokens | 128,000 tokens |
| Frontier Model | Yes | Yes |
| Vision Support | No | Yes |
| Description | o1 is OpenAI's new reasoning model for complex tasks that require broad general knowledge | OpenAI's flagship model configured for longer thinking. |
View detailed specifications and capabilities
View model details →View detailed specifications and capabilities
View model details →Access both o1 and GPT-5 (thinking) in a single workspace without managing multiple API keys.
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