Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.
NousResearch's flagship large-scale reasoning model based on Llama 4.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Sonnet 5 and Hermes 4 405B are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Hermes 4 405B has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. Hermes 4 405B: $1.00 input / $3.00 output.
Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs Hermes 4 405B at 131K tokens.
Claude Sonnet 5 supports vision/image input, but Hermes 4 405B does not.
Key differences: 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 Hermes 4 405B for free on idapt.app to see which performs better for your specific needs.