GPT-5.3-Codex vs Mistral Large 3
Mistral Large 3 leads in 5 of 8 categories
Arena ELO
Mistral Large 3
Cheaper
Mistral Large 3
Faster
Mistral Large 3
Detailed Comparison
| Category | GPT-5.3-Codex | Mistral Large 3 |
|---|---|---|
| Provider | OpenAI | Mistral |
| Context Window | 128K | 256K WIN |
| Input Price ($/1M) | $1.75 | $0.5 WIN |
| Output Price ($/1M) | $14 | $1.5 WIN |
| Arena ELO | N/A | 1418 WIN |
| Coding | N/A | unknown |
| Reasoning | N/A | 43.9% GPQA Diamond |
| Speed (tokens/sec) | N/A | ~70 t/s WIN |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, GPT-5.3-Codex or Mistral Large 3?
Mistral Large 3 is approximately 87% cheaper than GPT-5.3-Codex per million tokens.
Which is better for coding, GPT-5.3-Codex or Mistral Large 3?
GPT-5.3-Codex scores N/A on coding benchmarks, while Mistral Large 3 scores unknown.
Which has a larger context window?
GPT-5.3-Codex supports 128K context, while Mistral Large 3 supports 256K.
Is GPT-5.3-Codex or Mistral Large 3 open source?
GPT-5.3-Codex is proprietary. Mistral Large 3 is open source.
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