Ultra-fast and lightweight GPT-5 variant for low-latency tasks.
Efficiency-optimized DeepSeek V4 at 284B total / 13B active for fast, high-throughput inference.
No shared agent demos for these models yet.
No captured outputs for these models yet.
This model hasn't been benchmarked yet.
Both GPT 5 Nano 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 Nano: $0.05 input / $0.40 output. DeepSeek V4 Flash: $0.09 input / $0.19 output.
DeepSeek V4 Flash has a larger context window: GPT 5 Nano supports 400K tokens vs DeepSeek V4 Flash at 1M tokens.
GPT 5 Nano supports vision/image input, but DeepSeek V4 Flash does not.
Key differences: only GPT 5 Nano 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 Nano and DeepSeek V4 Flash for free on idapt.app to see which performs better for your specific needs.