Comprehensive side-by-side LLM comparison
o3-mini leads with 30.0% higher average benchmark score. o3-mini offers 68.0K more tokens in context window than Claude Opus 4.1. o3-mini is $84.50 cheaper per million tokens. Claude Opus 4.1 supports multimodal inputs. Claude Opus 4.1 is available on 4 providers. Overall, o3-mini is the stronger choice for coding tasks.
Anthropic
Claude Opus 4.1 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 72.7% across 8 benchmarks. It excels particularly in MMMLU (89.5%), TAU-bench Retail (82.4%), GPQA (80.9%). It supports a 232K 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
o3-mini is a language model developed by OpenAI. The model shows competitive results across 26 benchmarks. It excels particularly in COLLIE (98.7%), MATH (97.9%), IFEval (93.9%). It supports a 300K token context window for handling large documents. The model is available through 2 API providers. Released in 2025, it represents OpenAI's latest advancement in AI technology.
6 months newer
o3-mini
OpenAI
2025-01-30
Claude Opus 4.1
Anthropic
2025-08-05
Cost per million tokens (USD)
Claude Opus 4.1
o3-mini
Context window and performance specifications
Average performance across 30 common benchmarks
Claude Opus 4.1
o3-mini
o3-mini
2023-09-30
Available providers and their performance metrics
Claude Opus 4.1
Anthropic
Bedrock
ZeroEval
Claude Opus 4.1
o3-mini
Claude Opus 4.1
o3-mini
o3-mini
Azure
OpenAI