GPT-5.4 Pro vs o3-pro
GPT-5.4 Pro vs o3-pro: o3-pro is cheaper for input-heavy usage ($20.00/M vs $30.00/M input tokens), while GPT-5.4 Pro is better for long-context tasks (1,050,000 tokens).
Direct answer: choose o3-pro for lower token spend and choose GPT-5.4 Pro when your workload needs longer context.
Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
GPT-5.4 Pro
o3-pro
Cost Differences
o3-pro costs less than GPT-5.4 Pro
Quick Recommendation
Winner for direct API pricing: o3-pro. At the default workload, o3-pro saves about $180.00/month ($2,190.00/year) versus GPT-5.4 Pro.
Feature Comparison
| Feature | GPT-5.4 Pro | o3-pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input Price | $30.00/1M tokens | $20.00/1M tokens |
| Output Price | $180.00/1M tokens | $80.00/1M tokens |
| Context Window | 1,050,000 tokens | 1,000,000 tokens |
| Max Output | 131,072 tokens | 131,072 tokens |
| Category | reasoning | reasoning |
| Capabilities | textvisioncodereasoning | textreasoningcode |
| Release Date | 3/6/2026 | 6/10/2025 |
GPT-5.4 Pro vs o3-pro: Which Should You Choose?
Choosing between GPT-5.4 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 — 33% cheaper than GPT-5.4 Pro. Meanwhile, GPT-5.4 Pro offers a significantly larger context window at 1,050,000 tokens vs 1,000,000 for o3-pro.
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: o3-pro would save you roughly $18,000.00/month compared to GPT-5.4 Pro. For startups and indie developers, that difference can be significant.
Output costs matter too. GPT-5.4 Pro charges $180.00/1M 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-5.4 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-5.4 Pro when:
- • You need a larger context window (1,050,000 tokens)
- • You need more capabilities (vision)
- • You're already using OpenAI's API ecosystem
Choose o3-pro when:
- • Budget is a primary concern
- • You're already using OpenAI's API ecosystem
Pros and Caveats at a Glance
GPT-5.4 Pro
- • Input pricing: $30.00/M tokens
- • Output pricing: $180.00/M tokens
- • Context window: 1,050,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Higher input cost than o3-pro
- • Higher output cost than o3-pro
o3-pro
- • Input pricing: $20.00/M tokens
- • Output pricing: $80.00/M tokens
- • Context window: 1,000,000 tokens
- • Max output: 131,072 tokens
Watch out for
- • Smaller context window than GPT-5.4 Pro
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
GPT-5.4 Pro (OpenAI)
o3-pro (OpenAI)
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Which is cheaper, GPT-5.4 Pro or o3-pro?▼
What is the context window difference between GPT-5.4 Pro and o3-pro?▼
Which model is better for AI Agent / Agentic Workflows?▼
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