Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Claude Opus 4 offers 183.6K more tokens in context window than GPT-4o mini. GPT-4o mini is $89.25 cheaper per million tokens. Claude Opus 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Opus 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 64.6% across 9 benchmarks. It excels particularly in MMMLU (88.8%), TAU-bench Retail (81.4%), GPQA (79.6%). It supports a 328K token context window for handling large documents. The model is available through 4 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.
OpenAI
GPT-4o mini is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 63.5% across 9 benchmarks. It excels particularly in HumanEval (87.2%), MGSM (87.0%), MMLU (82.0%). It supports a 144K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents OpenAI's latest advancement in AI technology.
10 months newer
GPT-4o mini
OpenAI
2024-07-18
Claude Opus 4
Anthropic
2025-05-22
Cost per million tokens (USD)
Claude Opus 4
GPT-4o mini
Context window and performance specifications
Average performance across 16 common benchmarks
Claude Opus 4
GPT-4o mini
GPT-4o mini
2023-10-01
Available providers and their performance metrics
Claude Opus 4
Anthropic
Bedrock
ZeroEval
Claude Opus 4
GPT-4o mini
Claude Opus 4
GPT-4o mini
GPT-4o mini
Azure