DeepSeek Chat (R1-based) vs GPT-5-Codex-Mini
DeepSeek DeepSeek Chat (R1-based) | OpenAI GPT-5-Codex-Mini | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Jan 20 2025 | Nov 8 2025 |
| Access | Open Weight | Proprietary |
| Timeline | ||
| Release gap | DeepSeek Chat (R1-based) shipped 292 days before GPT-5-Codex-Mini | |
Which is better: DeepSeek Chat (R1-based) or GPT-5-Codex-Mini?
DeepSeek Chat (R1-based) and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek Chat (R1-based) shipped 292 days before GPT-5-Codex-Mini, so benchmark comparisons should account for the intervening progress.
DeepSeek Chat (R1-based) is open weight, while GPT-5-Codex-Mini is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek Chat (R1-based) and GPT-5-Codex-Mini don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek Chat (R1-based) was released by DeepSeek on Jan 20 2025.
GPT-5-Codex-Mini was released by OpenAI on Nov 8 2025.
DeepSeek Chat (R1-based) is an open weight model released by DeepSeek. GPT-5-Codex-Mini is a proprietary model released by OpenAI.