Comprehensive side-by-side LLM comparison
Claude Opus 4 leads with 15.2% higher average benchmark score. Claude Opus 4 offers 307.5K more tokens in context window than GPT-3.5 Turbo. GPT-3.5 Turbo is $88.00 cheaper per million tokens. Claude Opus 4 supports multimodal inputs. Claude Opus 4 is available on 4 providers. Overall, Claude Opus 4 is the stronger choice for coding tasks.
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-3.5 Turbo is a language model developed by OpenAI. The model shows competitive results across 8 benchmarks. Notable strengths include DROP (70.2%), MMLU (69.8%), HumanEval (68.0%). The model is available through 2 API providers.
2 years newer
GPT-3.5 Turbo
OpenAI
2023-03-21
Claude Opus 4
Anthropic
2025-05-22
Cost per million tokens (USD)
Claude Opus 4
GPT-3.5 Turbo
Context window and performance specifications
Average performance across 16 common benchmarks
Claude Opus 4
GPT-3.5 Turbo
GPT-3.5 Turbo
2021-09-30
Available providers and their performance metrics
Claude Opus 4
Anthropic
Bedrock
ZeroEval
Claude Opus 4
GPT-3.5 Turbo
Claude Opus 4
GPT-3.5 Turbo
GPT-3.5 Turbo
Azure
OpenAI