o1-pro vs o1
Detailed pricing comparison and cost analysis.
Updated September 2026
Cost Simulator
| Feature | o1-pro | o1 |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price (1M) | $150.00 | $15.00 |
| Output Price (1M) | $600.00 | $60.00 |
| Context Window | 200,000 | 200,000 |
Verdict
o1-pro costs $150.00 per 1M input tokens and $600.00 per 1M output tokens. o1 costs $15.00 per 1M input tokens and $60.00 per 1M output tokens. o1 is 90% cheaper on input tokens than o1-pro. For output tokens, o1 is the more affordable option at $60.00/1M vs $600.00.
On context window, o1-pro supports 200,000 tokens — meaning it can fit more conversation history, documents, or code in a single request. This matters for RAG pipelines, long document analysis, and agentic workflows where context builds up over many turns.
When to choose o1-pro
- ✓ You are already integrated with OpenAI
When to choose o1
- ✓ You need the lowest input token cost ($ 15.00/1M)
- ✓ Your workload is output-heavy — o1 generates text cheaper
- ✓ You are already integrated with OpenAI
Use the calculator above to simulate your specific workload and find the exact break-even point. For most applications, the cheapest model is the one that minimises your total monthly bill given your input-to-output token ratio.
Frequently Asked Questions
Is o1-pro cheaper than o1? ▼
o1 is cheaper on input tokens at $15.00/1M vs $150.00/1M for o1-pro — a 90% saving.
What is the context window of o1-pro vs o1? ▼
o1-pro has a 200,000-token context window. o1 has a 200,000-token context window. o1-pro supports the larger context, suitable for longer documents and agentic workflows.
Which model is better: o1-pro or o1? ▼
The best choice depends on your use case. For cost efficiency on input tokens, o1 is the cheaper option. For maximum context length, o1-pro supports 200,000 tokens. Use the comparison table above to find the right fit for your workload.