OpenAI's powerful general-purpose frontier model.
Efficiency-optimized DeepSeek V4 at 284B total / 13B active for fast, high-throughput inference.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 5 and DeepSeek V4 Flash 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.
DeepSeek V4 Flash has a lower blended cost. GPT 5: $1.25 input / $10.00 output. DeepSeek V4 Flash: $0.09 input / $0.19 output.
DeepSeek V4 Flash has a larger context window: GPT 5 supports 400K tokens vs DeepSeek V4 Flash at 1M tokens.
GPT 5 supports vision/image input, but DeepSeek V4 Flash does not.
Key differences: DeepSeek V4 Flash is significantly cheaper; only GPT 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 GPT 5 and DeepSeek V4 Flash for free on idapt.app to see which performs better for your specific needs.