Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5 Pro
o3-pro
Cost Differences
o3-pro costs less than GPT-5 Pro
Feature Comparison
| Feature | GPT-5 Pro | o3-pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price | $15.00/1M tokens | $20.00/1M tokens |
| Output Price | $120.00/1M tokens | $80.00/1M tokens |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Max Output | 100,000 tokens | 131,072 tokens |
| Category | flagship | reasoning |
| Capabilities | textvisioncodereasoning | textreasoningcode |
| Release Date | 8/7/2025 | 6/10/2025 |
GPT-5 Pro vs o3-pro: Which Should You Choose?
Choosing between GPT-5 Pro and o3-pro depends on your priorities: cost efficiency, context length, or raw capability. o3-pro is the more affordable option at $20.00/1M input tokens. Meanwhile, o3-pro offers a significantly larger context window at 1,000,000 tokens vs 200,000 for GPT-5 Pro.
These models target different tiers: GPT-5 Pro is a flagship model while o3-pro is reasoning. This means they're optimized for different workloads. GPT-5 Pro is built for complex tasks that require deeper reasoning, while o3-pro offers better value for routine operations.
Output costs matter too. GPT-5 Pro charges $120.00/1M output tokens vs $80.00 for o3-pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o3-pro has the edge here at $80.00/1M output tokens.
Multimodal capabilities: GPT-5 Pro supports vision (image inputs) while o3-pro is text-only. If your application needs image understanding, this narrows your choice.
Best Use Cases
Choose GPT-5 Pro when:
- • Budget is a primary concern
- • You need more capabilities (vision)
- • You're already using OpenAI's API ecosystem
Choose o3-pro when:
- • You need a larger context window (1,000,000 tokens)
- • You need longer outputs (up to 131,072 tokens)
- • 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 Pro (OpenAI)
o3-pro (OpenAI)
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