Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.
OpenAI's budget-friendly reasoning model — fast and surprisingly capable.
No shared demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 73.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
GPT Mini (120b) has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. GPT Mini (120b): $0.04 input / $0.17 output.
Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs GPT Mini (120b) at 131K tokens.
Claude Sonnet 5 supports vision/image input, but GPT Mini (120b) does not.
Key differences: Claude Sonnet 5 has a notably higher capability index (6.9 point gap); GPT Mini (120b) is significantly cheaper; only Claude Sonnet 5 supports vision input. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Sonnet 5 and GPT Mini (120b) for free on idapt.app to see which performs better for your specific needs.