DeepSeek R1 vs GPT-5.3-Codex
DeepSeek R1 leads in 4 of 8 categories
Arena ELO
DeepSeek R1
Cheaper
DeepSeek R1
Faster
DeepSeek R1
Detailed Comparison
| Category | DeepSeek R1 | GPT-5.3-Codex |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Context Window | 128K | 128K |
| Input Price ($/1M) | $0.55 WIN | $1.75 |
| Output Price ($/1M) | $2.19 WIN | $14 |
| Arena ELO | 1368 WIN | N/A |
| Coding | unknown | N/A |
| Reasoning | #1 Math & Coding Arena | N/A |
| Speed (tokens/sec) | ~45 t/s WIN | N/A |
| Open Source | Yes | No |
Frequently Asked Questions
Which is cheaper, DeepSeek R1 or GPT-5.3-Codex?
DeepSeek R1 is approximately 83% cheaper than GPT-5.3-Codex per million tokens.
Which is better for coding, DeepSeek R1 or GPT-5.3-Codex?
DeepSeek R1 scores unknown on coding benchmarks, while GPT-5.3-Codex scores N/A.
Which has a larger context window?
DeepSeek R1 supports 128K context, while GPT-5.3-Codex supports 128K.
Is DeepSeek R1 or GPT-5.3-Codex open source?
DeepSeek R1 is open source. GPT-5.3-Codex is proprietary.
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