DeepSeek V3.1 Terminus vs GPT-5.3-Codex-Spark
DeepSeek DeepSeek V3.1 Terminus | OpenAI GPT-5.3-Codex-Spark | |
|---|---|---|
| Overview | ||
| Company | DeepSeek | OpenAI |
| Release date | Sep 22 2025 | Feb 12 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Context window | — | 128k |
| Timeline | ||
| Release gap | DeepSeek V3.1 Terminus shipped 143 days before GPT-5.3-Codex-Spark | |
Which is better: DeepSeek V3.1 Terminus or GPT-5.3-Codex-Spark?
DeepSeek V3.1 Terminus 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 V3.1 Terminus shipped 143 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
DeepSeek V3.1 Terminus is open weight, while GPT-5.3-Codex-Spark is proprietary.
Direct benchmark comparisons are unavailable — DeepSeek V3.1 Terminus and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks.
Frequently asked questions
DeepSeek V3.1 Terminus was released by DeepSeek on Sep 22 2025.
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
DeepSeek V3.1 Terminus is an open weight model released by DeepSeek. GPT-5.3-Codex-Spark is a proprietary model released by OpenAI.