GPT-4ovsClaude Sonnet 4
OpenAI vs Anthropic — Side-by-side model comparison
Head-to-Head Comparison
| Metric | GPT-4o | Claude Sonnet 4 |
|---|---|---|
| Provider | ||
| Arena Rank | #2 | #3 |
| Context Window | 128K | 200K |
| Input Pricing | $2.50/1M tokens | $3.00/1M tokens |
| Output Pricing | $10.00/1M tokens | $15.00/1M tokens |
| Parameters | ~200B (est.) | Undisclosed |
| Open Source | No | No |
| Best For | General purpose, coding, analysis | Coding, writing, long documents |
| Release Date | — | May 22, 2025 |
GPT-4o
GPT-4o is OpenAI's flagship multimodal model, capable of processing text, images, and audio in a unified architecture. The 'o' stands for 'omni,' reflecting its ability to seamlessly handle multiple input types. With a 128K token context window and competitive pricing, it strikes an optimal balance between capability and cost-effectiveness. GPT-4o delivers fast response times while maintaining strong performance across coding, analysis, creative writing, and visual understanding tasks. It powers ChatGPT's default experience and is one of the most widely deployed AI models globally, serving millions of API calls daily. The model supports function calling, JSON mode, and structured outputs, making it highly versatile for production applications. Its combination of speed, quality, and multimodal capabilities makes it the go-to choice for most general-purpose AI applications.
View OpenAI profile →Claude Sonnet 4
Claude Sonnet 4 is Anthropic's balanced mid-tier model, offering an excellent combination of intelligence, speed, and cost-effectiveness. It ranks among the top 5 models globally on arena benchmarks while being significantly more affordable than Opus 4. With a 200K token context window, Sonnet 4 handles long documents and complex codebases with ease. The model excels at coding tasks (strong SWE-bench performance), long-form writing, document analysis, and structured data extraction. Its extended thinking capabilities allow it to tackle complex problems while maintaining fast response times for everyday tasks. Sonnet 4 is the most popular Claude model for production applications, offering the best price-to-performance ratio in Anthropic's lineup. It supports tool use, vision capabilities, and works seamlessly in agentic workflows.
View Anthropic profile →Key Differences: GPT-4o vs Claude Sonnet 4
GPT-4o ranks higher in arena benchmarks (#2) indicating stronger overall performance.
GPT-4o is 1.4x cheaper on average, making it the better choice for high-volume applications.
Claude Sonnet 4 supports a larger context window (200K), allowing it to process longer documents in a single request.
When to use GPT-4o
- +You need the highest quality output based on arena rankings
- +Budget is a concern and you need cost efficiency
- +Your use case involves general purpose, coding, analysis
When to use Claude Sonnet 4
- +Quality matters more than cost
- +You need to process long documents (200K context)
- +Your use case involves coding, writing, long documents
Cost Analysis
At current pricing, GPT-4o is 1.4x more affordable than Claude Sonnet 4. For a typical enterprise workload processing 100M tokens per month:
GPT-4o monthly cost
$625
100M tokens/mo (50/50 in/out)
Claude Sonnet 4 monthly cost
$900
100M tokens/mo (50/50 in/out)
The Verdict
GPT-4o wins our head-to-head comparison with 4 out of 5 category wins. It's the stronger choice for general purpose, coding, analysis, though Claude Sonnet 4 holds an edge in coding, writing, long documents.
Last compared: March 2026 · Data sourced from public benchmarks and official pricing pages