Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5.2 pro
o1
Cost Differences
o1 costs less than GPT-5.2 pro
Feature Comparison
| Feature | GPT-5.2 pro | o1 |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price | $21.00/1M tokens | $15.00/1M tokens |
| Output Price | $168.00/1M tokens | $60.00/1M tokens |
| Context Window | 1,000,000 tokens | 200,000 tokens |
| Max Output | 131,072 tokens | 65,536 tokens |
| Category | reasoning | reasoning |
| Capabilities | textvisionaudiocodereasoning | textreasoning |
| Release Date | 12/11/2025 | 9/12/2024 |
GPT-5.2 pro vs o1: Which Should You Choose?
Choosing between GPT-5.2 pro and o1 depends on your priorities: cost efficiency, context length, or raw capability. o1 is the more affordable option at $15.00/1M input tokens — 29% cheaper than GPT-5.2 pro. Meanwhile, GPT-5.2 pro offers a significantly larger context window at 1,000,000 tokens vs 200,000 for o1.
Both models are in the reasoning category, making this a direct head-to-head comparison. At scale — say 10,000 requests per day — the cost difference adds up: o1 would save you roughly $18,000.00/month compared to GPT-5.2 pro. For startups and indie developers, that difference can be significant.
Output costs matter too. GPT-5.2 pro charges $168.00/1M output tokens vs $60.00 for o1. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o1 has the edge here at $60.00/1M output tokens.
Multimodal capabilities: GPT-5.2 pro supports vision (image inputs) while o1 is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose GPT-5.2 pro when:
- • You need a larger context window (1,000,000 tokens)
- • You need more capabilities (vision, audio, code)
- • You need longer outputs (up to 131,072 tokens)
- • You're already using OpenAI's API ecosystem
Choose o1 when:
- • Budget is a primary concern
- • You're already using OpenAI's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
GPT-5.2 pro (OpenAI)
o1 (OpenAI)
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