GPT-3.5 Turbo vs o3 Pro
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for GPT-3.5 Turbo and o3 Pro.
GPT-3.5 Turbo
GPT-3.5 Turbo is OpenAI's fastest model. It can understand and generate natural language or code, and is optimized for chat and traditional completion tasks. Training data up to Sep 2021.
o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Technical Specifications
| Specification | GPT-3.5 Turbo | o3 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context Window | 16,385 tokens | 200,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2023-05-28 | 2025-06-10 |
API Pricing Comparison
Input Price per Million Tokens
GPT-3.5 Turbo
$0.50
o3 Pro
$20.00
Output Price per Million Tokens
GPT-3.5 Turbo
$1.50
o3 Pro
$80.00
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
GPT-3.5 Turbo Quirks & Gotchas
No developer gotchas reported.
o3 Pro Quirks & Gotchas
No developer gotchas reported.