DeepSeek V4 Flash vs GPT-5.4
GPT-5.4 leads in 3 of 8 categories
Arena ELO
GPT-5.4
Cheaper
DeepSeek V4 Flash
Faster
GPT-5.4
Detailed Comparison
| Category | DeepSeek V4 Flash | GPT-5.4 |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Context Window | 128K | 1M WIN |
| Input Price ($/1M) | $0.14 WIN | $3 |
| Output Price ($/1M) | $0.28 WIN | $15 |
| Arena ELO | N/A | 1560 WIN |
| Coding | N/A | unknown |
| Reasoning | N/A | unknown |
| Speed (tokens/sec) | N/A | ~50 t/s WIN |
| Open Source | Yes | No |
Frequently Asked Questions
Which is cheaper, DeepSeek V4 Flash or GPT-5.4?
DeepSeek V4 Flash is approximately 98% cheaper than GPT-5.4 per million tokens.
Which is better for coding, DeepSeek V4 Flash or GPT-5.4?
DeepSeek V4 Flash scores N/A on coding benchmarks, while GPT-5.4 scores unknown.
Which has a larger context window?
DeepSeek V4 Flash supports 128K context, while GPT-5.4 supports 1M.
Is DeepSeek V4 Flash or GPT-5.4 open source?
DeepSeek V4 Flash is open source. GPT-5.4 is proprietary.
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