Deepseek V4 Flash vs GPT 5.4 Mini
Deepseek V4 Flash is 5.4× cheaper on input tokens than GPT 5.4 Mini. GPT 5.4 Mini has a longer context window (1M vs 1M). Both models are accessible via the haimaker.ai OpenAI-compatible API at https://api.haimaker.ai/v1.
Deepseek V4 Flash
deepseek/deepseek-v4-flash
Chat
Function CallingReasoning
GPT 5.4 Mini
openai/gpt-5.4-mini
Chat
Function CallingVisionReasoningWeb Search
Side-by-side specifications
| Spec | Deepseek V4 Flash | GPT 5.4 Mini |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Full ID | deepseek/deepseek-v4-flash | openai/gpt-5.4-mini |
| Mode | chat | chat |
| Parameters | N/A | N/A |
| Context window | 1M | 1M |
| Max output | 384K | 128K |
| Input price (per 1M) | $0.14 | $0.75 |
| Output price (per 1M) | $0.28 | $4.50 |
| License | N/A | N/A |
| Architecture | N/A | N/A |
Feature support
| Feature | Deepseek V4 Flash | GPT 5.4 Mini |
|---|---|---|
| Function Calling | ✓ Supported | ✓ Supported |
| Reasoning | ✓ Supported | ✓ Supported |
| Vision | — | ✓ Supported |
| Web Search | — | ✓ Supported |
Frequently asked questions
Which is cheaper, Deepseek V4 Flash or GPT 5.4 Mini?
Deepseek V4 Flash is cheaper at $0.14 per 1M input tokens vs $0.75 for GPT 5.4 Mini.
Which has the larger context window, Deepseek V4 Flash or GPT 5.4 Mini?
GPT 5.4 Mini accepts up to 1M input tokens vs 1M for Deepseek V4 Flash.
Can I use both Deepseek V4 Flash and GPT 5.4 Mini via the same API?
Yes. haimaker.ai exposes both deepseek/deepseek-v4-flash and openai/gpt-5.4-mini on the same OpenAI-compatible endpoint at https://api.haimaker.ai/v1, so you can switch between them by changing the model parameter in your request.
Try Deepseek V4 Flash or GPT 5.4 Mini via the haimaker API
One OpenAI-compatible endpoint. Switch between them by changing the model parameter.