NousResearch's flagship large-scale reasoning model based on Llama 4.
OpenAI's fastest, most affordable GPT-6 tier for high-volume, latency-sensitive work.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Hermes 4 405B and GPT 6 Luna 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.
GPT 6 Luna has a lower blended cost. Hermes 4 405B: $1.00 input / $3.00 output. GPT 6 Luna: $0.10 input / $0.50 output.
GPT 6 Luna has a larger context window: Hermes 4 405B supports 131K tokens vs GPT 6 Luna at 1.1M tokens.
GPT 6 Luna supports vision/image input, but Hermes 4 405B does not.
Key differences: GPT 6 Luna is significantly cheaper; only GPT 6 Luna 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 Hermes 4 405B and GPT 6 Luna for free on idapt.app to see which performs better for your specific needs.