DeepSeek Chat (R1-based) vs GPT-5.3-Codex-Spark
DeepSeek DeepSeek Chat (R1-based) | OpenAI GPT-5.3-Codex-Spark | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Jan 20 2025 | Feb 12 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Context window | — | 128k |
| Timeline | ||
| Release gap | DeepSeek Chat (R1-based) shipped 388 days before GPT-5.3-Codex-Spark | |
Which is better: DeepSeek Chat (R1-based) or GPT-5.3-Codex-Spark?
DeepSeek Chat (R1-based) and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek Chat (R1-based) shipped 388 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
DeepSeek Chat (R1-based) is open weight, while GPT-5.3-Codex-Spark is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek Chat (R1-based) and GPT-5.3-Codex-Spark 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-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
DeepSeek Chat (R1-based) is an open weight model released by DeepSeek. GPT-5.3-Codex-Spark is a proprietary model released by OpenAI.