DeepSeek R1 vs GPT 5.4
DeepSeek R1 is 4.5× cheaper on input tokens than GPT 5.4. GPT 5.4 has a longer context window (1M vs 65K). Both models are accessible via the haimaker.ai OpenAI-compatible API at https://api.haimaker.ai/v1.
DeepSeek R1
deepseek/deepseek-r1
Chatmit
Function CallingReasoning
GPT 5.4
openai/gpt-5.4
Chat
Function CallingVisionReasoning
Side-by-side specifications
| Spec | DeepSeek R1 | GPT 5.4 |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Full ID | deepseek/deepseek-r1 | openai/gpt-5.4 |
| Mode | chat | chat |
| Parameters | 684.5B | N/A |
| Context window | 65K | 1M |
| Max output | 8K | 128K |
| Input price (per 1M) | $0.55 | $2.50 |
| Output price (per 1M) | $2.19 | $15.00 |
| License | mit | N/A |
| Architecture | DeepseekV3ForCausalLM | N/A |
Feature support
| Feature | DeepSeek R1 | GPT 5.4 |
|---|---|---|
| Function Calling | ✓ Supported | ✓ Supported |
| Reasoning | ✓ Supported | ✓ Supported |
| Vision | — | ✓ Supported |
Frequently asked questions
Which is cheaper, DeepSeek R1 or GPT 5.4?
DeepSeek R1 is cheaper at $0.55 per 1M input tokens vs $2.50 for GPT 5.4.
Which has the larger context window, DeepSeek R1 or GPT 5.4?
GPT 5.4 accepts up to 1M input tokens vs 65K for DeepSeek R1.
Can I use both DeepSeek R1 and GPT 5.4 via the same API?
Yes. haimaker.ai exposes both deepseek/deepseek-r1 and openai/gpt-5.4 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 R1 or GPT 5.4 via the haimaker API
One OpenAI-compatible endpoint. Switch between them by changing the model parameter.