GPT-4 TurbovsGPT-o3
OpenAI vs OpenAI — Side-by-side model comparison
Head-to-Head Comparison
| Metric | GPT-4 Turbo | GPT-o3 |
|---|---|---|
| Provider | ||
| Arena Rank | #5 | #2 |
| Context Window | 128K | 200K |
| Input Pricing | $10.00/1M tokens | $2.00/1M tokens |
| Output Pricing | $30.00/1M tokens | $8.00/1M tokens |
| Parameters | Undisclosed | Undisclosed |
| Open Source | No | No |
| Best For | Complex tasks, coding, analysis, vision | Advanced reasoning, agentic tasks, research |
| Release Date | Apr 9, 2024 | Apr 16, 2025 |
GPT-4 Turbo
GPT-4 Turbo is OpenAI's optimized version of GPT-4, offering the same intelligence at a fraction of the cost and with a significantly larger 128K context window. It includes a knowledge cutoff of April 2024 and supports both text and vision inputs. GPT-4 Turbo delivers faster responses than the original GPT-4 while maintaining the same level of reasoning capability, making it ideal for production applications that need high-quality outputs without the latency or cost of the base GPT-4 model.
View OpenAI profile →GPT-o3
GPT-o3 is OpenAI's most advanced reasoning model, succeeding o1 as the frontier of deliberative AI. It uses an enhanced chain-of-thought approach where the model spends more compute time 'thinking' before responding, dramatically improving performance on complex STEM, mathematical, and logical reasoning tasks. With a 200K token context window and the ability to use tools during reasoning, o3 represents a significant leap in AI problem-solving capabilities. It achieved state-of-the-art results on the ARC-AGI benchmark, demonstrating near-human performance on novel reasoning challenges. The model is particularly strong at multi-step mathematical proofs, complex code debugging, and scientific analysis where careful step-by-step reasoning is essential. Originally priced at a premium, an 80% price reduction in June 2025 made o3 accessible to a much broader range of developers and applications.
View OpenAI profile →Key Differences: GPT-4 Turbo vs GPT-o3
GPT-o3 ranks higher in arena benchmarks (#2) indicating stronger overall performance.
GPT-o3 is 4.0x cheaper on average, making it the better choice for high-volume applications.
GPT-o3 supports a larger context window (200K), allowing it to process longer documents in a single request.
When to use GPT-4 Turbo
- +Quality matters more than cost
- +Your use case involves complex tasks, coding, analysis, vision
When to use GPT-o3
- +You need the highest quality output based on arena rankings
- +Budget is a concern and you need cost efficiency
- +You need to process long documents (200K context)
- +Your use case involves advanced reasoning, agentic tasks, research
Cost Analysis
At current pricing, GPT-o3 is 4.0x more affordable than GPT-4 Turbo. For a typical enterprise workload processing 100M tokens per month:
GPT-4 Turbo monthly cost
$2,000
100M tokens/mo (50/50 in/out)
GPT-o3 monthly cost
$500
100M tokens/mo (50/50 in/out)
The Verdict
GPT-o3 wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for advanced reasoning, agentic tasks, research, though GPT-4 Turbo holds an edge in complex tasks, coding, analysis, vision.
Last compared: March 2026 · Data sourced from public benchmarks and official pricing pages