OpenAI's fastest, most affordable GPT-6 tier for high-volume, latency-sensitive work.
The GA release of DeepSeek's efficiency-optimized V4 Flash, re-post-trained for coding, reasoning, and agent workflows.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 6 Luna and DeepSeek V4 Flash (0731) 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. GPT 6 Luna: $0.10 input / $0.50 output. DeepSeek V4 Flash (0731): $0.01 input / $1.28 output.
GPT 6 Luna has a larger context window: GPT 6 Luna supports 1.1M tokens vs DeepSeek V4 Flash (0731) at 1M tokens.
GPT 6 Luna supports vision/image input, but DeepSeek V4 Flash (0731) does not.
Key differences: DeepSeek V4 Flash (0731) 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 GPT 6 Luna and DeepSeek V4 Flash (0731) for free on idapt.app to see which performs better for your specific needs.